Celvol Polyvinyl Alcohol

March 25, 2018 | Author: quiero_star_feliz2199 | Category: Polyvinyl Chloride, Ester, Alcohol, Solution, Solubility


Comments



Description

Celvol Polyvinyl Alcohol...A Versitile High-Performance Polymer TM Adhesives Paper Specialty Applications Building Products Textiles Adhesives Textiles Paper Specialty Applications Building Products . found in consumer and industrial applications. Europe and Asia. Our products.celanese. Celanese Corporation produces a full line of polyvinyl alcohol (PVOH) resins.com.ABOUT THE COMPANY POLYVINYL ALCOHOL BUSINESS As a global leader in the chemicals industry. Net sales totaled $6. and specialty applications. 1 . are manufactured in North America. www. with approximately 60% generated outside of North America. Texas. building products. the company employs approximately 9.300 employees worldwide. including this one at Calvert City. adhesives. Celvol® polyvinyl alcohols are produced at our four world-scale plants. Kentucky. Based in Dallas.1 billion in 2005. paper. Important end-use markets for PVOH include textiles. As a part of its Acetyls Products chain. Celanese Corporation makes products essential to everyday living. Kentucky. Celanese also has a global sales force located in offices worldwide to respond more quickly to the needs of our customers. Fully equipped laboratories provide a wide range of research and application support activities. Celanese’s commitment to polyvinyl alcohol is especially evident in our research and applications support activities. product application. and analytical services groups in the world. Our manufacturing plants in Calvert City. Texas. Research and application development is carried out at our facilities in Houston. Texas. Our Pasadena. 2 . we have developed a high level of expertise in both the production and use of PVOH.RENEWED COMMITMENT TO THE POLYVINYL ALCOHOL MARKET Celanese produces and sells one of the most complete lines of polyvinyl alcohol in the world. Since the introduction of Celvol™ polyvinyl alcohol. We have one of the largest technical service. Pasadena. Texas production facility (shown here) as well as our other 3 PVOH plants utilize state-of-the-art process technology. The combined capacity of the two plants makes Celanese a leading global merchant supplier of polyvinyl alcohol. Tarragona and Guardo Spain employ advanced computer controlled production technology to ensure polyvinyl alcohol of the highest quality. This commitment starts at executive levels and extends throughout the organization.S. PVOH Process Flow Vinyl Acetate Methanol Sodium Hydroxide PVAc PVOH PVOH Polymerization Hydrolysis Dry Grinding Packaging Bags Bulk 3 .S.such as dry blending with inorganics like calcium carbonate. Tackified Celvol polyvinyl alcohols are produced by controlled boration of super hydrolyzed and fully hydrolyzed grades. The viscosities are classified as ultra low. Sophisticated SQC and SPC systems produce excellent lot-to-lot consistency and product uniformity. while degree of hydrolysis is commonly denoted as super. S-grades have a tendency to agglomerate and form soft compression lumps during storage. Molecular weight is generally expressed in terms of solution viscosity. 205S. These products offer a number of advantages in emulsion of polymerization and applications including improved water solubility and lower foaming. medium. but have a fine particle size so that 99+% of the product will pass through a U. Kentucky and Pasadena. Celanese polyvinyl alcohol plants utilize advanced computer controlled production technology. A wide range of standard grades is available. These borated alcohols yield viscous aqueous solutions which have a tailored degree of tack and. The quality improvements apply not only to actual product issues. 80-mesh screen. fine particle size and tackified grades. facility in 1980. and 540S polyvinyl alcohols. significantly reduce penetration. Texas are ISO 9002 certified . providing polyvinyl alcohol of the highest quality.a definition of quality that is recognized worldwide. but also to service and support issues as well. Celvol polyvinyl alcohol S-grades are similar to standard grades. And. These programs evolved into statistical process control (SPC) schemes. The soft compression lumps will usually break apart upon further processing .COMMITMENT TO QUALITY CELVOL POLYVINYL ALCOHOL PRODUCT LINE Celanese is committed to continued quality improvements. Celvol 805. These grades are available commercially as Celvol 203S. Statistical quality control (SQC) programs were initially implemented at our Calvert City. our plants in Calvert City. intermediate and partially hydrolyzed. and 840 polyvinyl alcohols are improved versions of our standard polymerization grades Celvol 205. Specialty Grades In addition to Celanese’s standard product line. when applied onto surfaces such as paper. respectively. VAM is polymerized into polyvinyl acetate and then converted to polyvinyl alcohol (see process schematic below). several specialty grades are available including polyvinyl alcohol for emulsion polymerization. and 540 polyvinyl alcohols. Kentucky. 523. and high. low. gypsum and cement. fully. 823. Due tho their fine particle size. that began in the 1988 time frame. in a continuing commitment to total quality. 523S. Today. Standard Grades Individual Celvol polyvinyl alcohol grades vary in molecular weight and degree of hydrolysis. Celvol polyvinyl alcohol is manufactured from vinyl acetate monomer via a multistep process. . Another commercially important reaction is the acetylization with aldehydes. of which glyoxal. When glyoxal was added to Celvol grades 540. Polyvinyl butyral is produced by the reaction of polyvinyl alcohol with butyraldehyde and is used in the production of the inner adhesive film for safety glass.1 8. A vast array of crosslinkers or insolubi- lizers are available.Chemical Reactions Polyvinyl alcohol reacts in a manner similar to other secondary polyhydric alcohols. and with isocyanates to form substituted carbamate esters.0.3+ 165 20 *9% Add-on level based on fiber. Crosslinking All polyvinyl alcohol grades are crosslinkable through their secondary hydroxyl functionality. They include several classes: (1) aldehydes.0 87 . polyamide-epichlorohydrin-type resin. and Bacote-20. More recently. The addition of 5% Bacote-20 resulted in an 11% wet tensile improvement. a commonly used and favored crosslinker for polyvinyl alcohol.89 540 None 6. Degree of water resistance vary from grade to grade. such as ureaformaldehyde and melamineformaldehyde. A commercially important reaction is the formation of tackified PVOH using boric acid or borax to form cyclic esters This reaction is very sensitive to pH.4 8. along with the higher aldehydes. propoxylation and cyanoethoxylation. a zirconium ammonium carbonate salt. the wet tensile of crosslinked Celvol 350 polyvinyl alcohol was more than double that of uncrosslinked Celvol 350. Note that the wet tensile of Celvol 540 polyvinyl alcohol increased from no measurable wet strength uncrosslinked to 6. a water soluble.which are so exceptional on paper surfaces for oil. Celvol % Glyoxal Aerosol OT Solution) Range (dry/dry) Grade 0. significant water resistance improvements resulted.7 99. pli % (3 Min in 1% Hydrolysis Spec.8 350 None 6. Other reactions include ethoxylation.1 87 . The table below shows the effect of glyoxal. Also. a simple dialdehyde. The results in the table below indicate that the addition of Polycup172 to Celvol 165 polyvinyl alcohol at 5% dry/dry parts was as effective as glyoxal added at 20%. Even lower hydrolysis grades .can be made water resistant.98. cure 5 min @ 149°C Effect of Crosslinker Type on Wet Tensile of Celvol 165 Polyvinyl Alcohol-Saturated Paper* Instron Wet Tensile % (CMD) pli Crosslinker (dry/dry) None Glyoxal Bacote-20 Polycup 172 20 5 5 6. Reaction with dialdehydes such as glyoxal or gluteraldehyde can be used to crosslink polyvinyl alcohol. such as zirconium ammonium carbonates. is the most common.1 *Whatman No.89 540 20 3.8 350 20 6. both resulting in a 36% wet tensile improvement. and crosslinked Celvol 165 polyvinyl alcohol was 28% higher than uncrosslinked Celvol 165.6 98 . 350. urea to yield polymeric carbamate ester.2 98 .3+ 165 None 8. or low-formaldehyde-type crosslinkers. Other esterification reactions include those with chloroformate ester to yield poly(vinyl carbonate). and (3) salts of multi-valent anions.5-5.98.0 7.6 99. there has emerged a growing interest in zero-formaldehyde. and an insoluble gel is formed above 4. 4 chromatography paper 10% Celvol 165 add-on Drying Conditions were 5 min @ 149°C 5 . Two such products are Polycup 172. and 165 polyvinyl alcohol at 20% dry-on-dry. grease and organic solvent resistance and Gurley porosity .1 pli when crosslinked. (2) thermosetting resins. Effect of Glyoxal on Polyvinyl Alcohol Wet Tensile Strength Chromatography Base Paper* Wet Tensiles. such as gluteraldehyde and hydroxyadipaldehyde. Esterification reactions of polyvinyl alcohol can be carried out with a number of compounds. 70 0.5-6.0 87.5 86. cps6 95-190 4200-5900 1300-1700 1100-1500 245-485 5 As % Na 13.0 5.9 4.0-90.50 0.0-7. cps1 28-32 62-72 3.0 Celvol 425 95.90 0.5 4.9 0.5-6.5 5.5 4. 2 4% aqueous solution.9 0.5 4.4-4.9 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 0.0 Viscosity.5-4.0 4.0-89.0-89.5-7.0-5.0-3.0 87.0 87.0-7.0-7.5 5 5 5 5 5 5 5 5 5 >1 >1 0.5-19.0 Celvol 523 87. % Max5 1.5-6.0-7.0 5.5 4.8 98.9 0.9 5 0.9 4.5-6.0-90.0 62-72 14.0-89.9 0.9 0.9 0.9 0.5-7.0-98.5 4.20 1.90 0.0 5.0-7.0 Partially Hydrolyzed Celvol 502 87.5 5.0-7.9 0.0-4.0 Celvol 504 87.5 4.5 4.2 23-27 45-55 pH7 4.2 23-27 45-55 3.8 98.5-5.7 3.2-6.5-6.5 5.057.5 Celvol 443 92.5 4.0 87.5 4. 2O.20 0.20 1.5 5.5-6.9 0.2-6.5 4.9 0.0 4.9 0.5-6. 5% aqueous solution for HA-70 8 Use of Celvol 203S polyvinyl alcohol is covered by U. corrected volatiles 6 10%aqueous solution.0-63.0-32.8 98.5-4.90 0.0 87.90 0.0-98.0 5.20 1.0-98. 25°C.0-94.8 Intermediate Hydrolyzed Celvol 418 91.0-7.20 1.0 18.0-98.3+ Viscosity. 3 Total volatiles includes water.50 Fully Hydrolyzed 98. Derived from Super Hydrolyzed Grades Derived from Fully Hydrolyzed Grades 4 Volatile organic compound reported as methanol.5 4.90 0.5-6.5-6. 20°C.0 Celvol 513 86.5-6.0-89.50 Polymerization Celvol 805 Celvol 823 Celvol 840 Fine Particle (S-Grades) Celvol 203S8 Celvol 205S Celvol 523S Celvol 540S Tackified Grade Celvol HA-70 Celvol MH-82 Celvol MM-81 Celvol MM-51 Celvol MM-14 1 4% aqueous solution.0 4. 5.0-89.5-7.50 0.0 87.50 0.CELVOL POLYVINYL ALCOHOL TYPICAL PROPERTIES STANDARD GRADES Grade Super Hydrolyzed Celvol 125 Celvol 165 Hydrolysis.0-89.70 0.0 5.5 4.S.70 0.0 Celvol 205 87.5 4.50 0.0-89.20 1.9 Ash.20 1.8 98.9 4.9 0.5-6.9 0.0 Celvol 540 87.9 0.90 0.5-6.5-6.2 13-15 23-27 45-55 pH2 5.5-6.20 0.0 Celvol 203 87.0-89. Patent No.4-4.0-98.0 5.9 0.5-29. % 99.20 1.0-93.70 0.70 0.20 1.0-98.3+ 99.0 87.9 4.0-24.0 4.0-11.0-90.2-6.0 28.0 Celvol 103 Celvol 305 Celvol 107 Celvol 310 Celvol 325 Celvol 350 SPECIALTY GRADES Warp Size Celvol WS-724 Celvol WS-53NF 91.5 4.0-95.0 3.0 5.0-7.6 9.0-89.5-6.5-4.570.5 4.9 >1 >1 >1 >1 1.5-96.9 0.4-4.0-89.8 98.0-89. % Max VOC4 Total3 5 0.0-90.4-4.5 27-31 53. 6 .7 4.5 4. 5% aqueous solution for HA-70 7 10% aqueous solution.5 Volatiles.5-6.9 0.5-6. 650 1000 .Viscosity/Concentration Relationships of Aqueous Celvol Solutions at 20°C 100.000 31.000 .000 .23.000 .000 44.000 15.2200 Average Weight Molecular Weight Range 13.72 cps Viscosity Type Ultra Low Low Medium High Degree of Polymerization 150 .000 .186.000 85.000 146.23.000 70.000 1.30 cps 45 .000 Number Average Molecular Weight Range 7.101.124.000 .000 VISCOSITY IN CENTIPOISES 10.000 .13.50.000 .300 350 .6 cps 22 .000 100 10 0 0 4 High Viscosity 8 Medium Viscosity 12 16 Low Viscosity 20 Ultra Low Viscosity PERCENT CONCENTRATION Polyvinyl Alcohol Hydrolysis & Molecular Weight Effects Lower Viscosity Higher Application Solids Better Coating Rheology Slightly More Water Solubility Higher Viscosity Much Higher Strength Increased Block Resistance MOLECULAR WEIGHT low % HYDROLYSIS Low Hydrogen Bonding Films Cold Water Soluble Better Adhesion to Hydrophobes Lower Cohesive Strength High Foam Characteristics High Lumping Tendencies high High Hydrogen Bonding Increased Water Resistance High Adhesion to Cellulose High Cohesive Strength Low Foaming Non-Lumping Celvol Polyvinyl Alcohol Molecular Weight Viscosity 3 .1500 1600 .000 .000 7 .4 cps 5 .65. For more specific information on the FDA status of any of our grades. including toxicity.com Celvol Polyvinyl Alcohol Right-to-Know Information Ingredient Polyvinyl Alcohol Super and Fully Hydrolyzed Partially and Intermediate Hydrolyzed Water Methanol Sodium Acetate CAS Number 9002-89-5 25213-24-5 7732-18-5 67-56-1 127-09-3 FDA Compliance Polyvinyl alcohol is used in many food contact applications including food packaging adhesives and coatings for paper and paperboard. fire and explosion hazards. HEALTH AND ENVIRONMENTAL Please refer to your Material Safety Data Sheets (MSDS) for information on the safe use and handling of Celvol polyvinyl alcohol.celvol. 8 .SAFETY. Solubility is a good gauge of quality in polyvinyl alcohol. and environmental effects. Celanese Chemicals’ manufacturing process provides extremely high quality polyvinyl alcohol. An MSDS can be obtained by contacting our Product Literature Center at 1-817-685-5600 or online at www. please contact our Product Information Center at 1-866-284-0927. do not exceed maximum solids. Solution Preparation Celvol Grade 103 107 305 310 125 325 165 350 WS-724 WS-53NF 418 425 203 502 205 805 513 523 823 540 840 Addition Rate 10 sec/bag 10 sec/bag 10 sec/bag 10 sec/bag 10 sec/bag 10 sec/bag 10 sec/bag 10 sec/bag 1 min/bag 1 min/bag 1 min/bag 1 min/bag 2 min/bag 2 min/bag 2 min/bag 2 min/bag 2 min/bag 2 min/bag 2 min/bag 2 min/bag 2 min/bag Maximum Recommended Solids 30% 20% 20% 15% 10% 10% 7% 7% 15% 10% 12% 10% 30% 30% 20% 20% 15% 10% 10% 7% 7% Minimum Cook-Out Temperature 200°F (93°C) 200°F (93°C) 200°F (93°C) 200°F (93°C) 205°F (96°C) 200°F (93°C) 205°F (96°C) 200°F (93°C) 195°F (91°C) 185°F (85°C) 195°F (91°C) 195°F (91°C) 185°F (85°C) 185°F (85°C) 185°F (85°C) 185°F (85°C) 185°F (85°C) 185°F (85°C) 185°F (85°C) 185°F (85°C) 185°F (85°C) 9 . Elevate solution temperature to recommended levels (185-205 oF/85-96 oC) and hold for 30 minutes. a biocide addition is recommended. boiling will induce foam. Maximizing time in the post-jet residence coils and providing a holding tank for the polyvinyl alcohol solution after the coils will ensure complete solubility. please refer to our Solution Preparation Guideline brochure (Pub #2001-PVOH1060). Following is a list of important highlights: S-grades (fine particle size) are designed for use in dry blends with inorganic substances such as calcium carbonate. the surface of the water should be moving vigorously. gypsum and cement. WS-724 and WS53NF are designed to be used without a defoamer. unlike starch which explodes rapidly into colloidal sized fragments in a steam jet. (As a general rule. Lumps are very difficult to cook out. Celvol polyvinyl alcohols cannot be overcooked. (These blends are typically mixed with water at the job site. including Celvol 805. All tanks and lines must be free of borax to avoid coagulation. 823. However. small diameter mixers which may induce air entrainment and create foam. Celvol polyvinyl alcohols are in solution after cooking and can be used at any temperature. A defoamer is generally recommended.CELVOL POLYVINYL ALCOHOL SOLUTION PREPARATION For a complete description of the various methods for preparing Celvol solutions. However. A 15 minute hold time at 200 oF is recommended. Tanks should have baffles and flush bottom valves to avoid dead spots where polyvinyl alcohol particles can agglomerate. Celvol polyvinyl alcohols will dissolve slowly by shedding layers. For best results. solids and cook out temperatures vary by grade as illustrated on the adjacent chart. Further. Celvol polyvinyl alcohols may be jet cooked. please be aware of the following pitfalls: There is a high risk of lumping if polyvinyl alcohol is added to preheated water.) Addition rates. While the cooking process is straightforward. 840.) We recommend S-grades not be cooked as they tend to clump when added directly to water. Several grades. Celvol polyvinyl alcohols should first be dispersed in cold or room temperature water using sufficient agitation to uniformly suspend all particles. If solutions are kept for more than 24 hours. Avoid high speed. Failure to reach the minimum temperature may result in undissolved polyvinyl alcohol regardless of cook time. they may not provided sufficient agitation to the sides of the tank allowing polyvinyl alcohol particles to settle out and not dissolve. Celvol polyvinyl alcohols are widely used in the textile industry for warp sizing. 10 . Celvol products find use in sizing and coating applications. solvent and water resistance as well as web strength. or assistance with new applications. The bond particularly well to cellulosic surfaces and offer improved water resistance. water soluble films. 11 . Celvol products function as primary binders or compounding agents. The products also find use in various building products such as joint cements and mortars. Celvol Polyvinyl Alcohol Solution Preparation Guidelines (Pub #2002-PVOH-1060). technical service staff. please visit our website at www. In the paper industry.A versatile polymer for adhesive applications (Pub #2002-PVOH-1020).A veratile performer in the paper and paperboard applications (Pub #2002-PVOH-1030). and rsistance to grease and other petroleum hydrocarbons.APPLICATIONS Celvol polyvinyl alcohols are widely used for textile warp sizing.celvol. Celvol polyvinyl alcohol films exhibit high abrasion resistance. strength. They behave primarily as a protective colloid and often enhance the emulsifying action at very low concentrations.com or contact 1-817-685-5600 to request the appropriate brochure. can lead to superior abrasion resistance and weavability. Celvol polyvinyl alcohols are also used by the paper industry for surface sizing and coating. Celvol Polyvinyl Alcohol . Celvol Polyvinyl Alcohol in Emulsion Polymerization (Pub #2002-PVOH-1010). tensile strength and flexibility. Information on the uses of Celvol polyvinyl alcohol products. which possess increased polyester adhesion. In adhesive formulations. Celvol Polyvinyl Alcohol . The product applications matrix on the next page shows the broad range of applications that are feasible for the various Celvol grades. Polymerizers also find Celvol polyvinyl alcohols valuable as a dispersing/stabilizing agent. partially hydrolyzed polyvinyl alcohols will desize far easier than other grades providing numerous benefits in textile finishing operations. elongation. Celvol products are also wellsuited as binders in pigmented coatings systems and as carriers for optical brighteners. For polyvinyl alcohol information related to specific applications. Partially hydrolyzed grades. strippable coatings and non-wovens. Celvol polyvinyl alcohols can fuinction as th primary binder or a compounding agent. Products for Textiles (Pub #2002-PVOH-1050). The variable characteristics available in the extensive product line permit the use of Celvol polyvinyl alcohols in a wide variety of other industrial applications such as a temporary binder for ceramics. Additionally. is available from our In adhesive formulations. Celvol polyvinyl alcohols are used in emulsion and suspension polymerization applications. Ployvinyl alcohol significantly improves grease. PRODUCT LINE APPLICATION MATRIX TEXTILES ADHESIVES PAPER BP SPECIALTY STANDARD GRADES Super Hydrolyzed Celvol 125 Celvol 165 Fully Hydrolyzed Celvol 103 Celvol 305 Celvol 107 Celvol 310 Celvol 325 Celvol 350 Intermediate Hydrolyzed Celvol 418 Celvol 425 Celvol 443 Partially Hydrolyzed Celvol 502 Celvol 203 Celvol 504 Celvol 205 Celvol 513 Celvol 523 Celvol 540 SPECIALTY GRADES Warp Size Celvol WS-724 Celvol WS-53NF Polymerization Celvol 805 Celvol 823 Celvol 840 S-Grades Celvol 203S Celvol 205S Celvol 523S Celvol 540S Tackified Celvol HA-70 Celvol MH-82 Celvol MM-81 Celvol MM-51 Celvol MM-14 12 . . In addition. Users of any chemical should satisfy themselves by independent investigation of current scientific and medical knowledge that the material can be used safely. Although certain hazards may be described in this publication. Published 2007.43080 Tarragona Spain Mexico/Latin America: Grupo Celanese SA Tecoyotitla 412 Col. the information contained herein is accurate. neither Celanese nor any of its affiliates assumes any liability whatsoever for the accuracy or completeness of the information contained herein. To the best of our knowledge. we cannot guarantee that these are the only hazards that exist.com info. of either the chemicals discussed above or any subsequent polymerization or reaction products that result from a formulation containing them. TX 75234-6034 Tel +1-972-443-8579 Fax +1-972-443-4945 www. All chemicals may present unknown health hazards and should be used with caution. no certification or claim in made as to the status.F.pvoh@celanese. However. Tel +52-55-5480-9100 Fax +52-55-5480-9185 Asia: Celanese Pte Ltd. Final determination of suitability of any material and whether there is any infringement of patents is the sole responsibility of the user. 501 Orchard Road #11-01 Wheelock Place Singapore 238880 Tel +65-733-1767 Fax +65-733-1267 Visit Celvol.celvol. Ex-Hacienda de Guadaloupe Chimalistic 01050 Mexico. including but not limited to the toxic Substances Control Act. 1157 Apartado 1388 E . Km. under any law or regulation.International Offices North America: Celanese Chemicals 1601 West LBJ Freeway Dallas.PVOH-1000 .com for more information about our products.com Europe: Tarragona Manufacturing Plant Carretera Nacional 340. D.
Copyright © 2024 DOKUMEN.SITE Inc.