plastics, polymer industry chemicals | polymer chemicals manufacturers, suppliers

chemical-categories

ALCOTEX 234

Alcotex 234 for use in conjunction with Alcotex 225 as a buildup suppressant for vinyl chloride suspension polymerization. It eliminates build-up on the reactor baffles and stirrer or areas of poor surface quality. Use of Alcotex 234 will lead to a substantially higher number of production runs before the reactor has to be opened and pressure cleaned.

Properties Suppliers
ALCOTEX 359B

Alcotex 359B is partially hydrolyzed polyvinyl acetate. It is supplied as a solvent based solution of approximate ratio 90:10 methanol / methyl acetate. Alcotex 359B has a blocky distribution of hydroxyl groups. Alcotex 359B may be poured or pumped using a wide variety of processing equipment, designed for handling flammable liquids, in accordance with local legislation.

Properties Suppliers
ALCOTEX 432P

Alcotex 432P is a 43% hydrolyzed polyvinyl alcohol supplied as a low viscosity methanol based solution. It has been specifically developed as a secondary suspending agent for vinyl chloride suspension polymerization. It may be used in conjunction with conventional primary suspending agents. In optimized recipes, improvements can be obtained in the porosity/bulk density relationship. Alcotex 432P can be pumped directly into the reactor, usually after the water and primary stabilizer have been added. The level of primary stabilizer may need to be reduced to maintain the correct grain size. Alcotex 432P can be used over the whole molecular weight range, at high K values to increase plasticizer absorption and at low K values to improve VCM release.

Properties Suppliers
ALCOTEX 45

Alcotex 45 is a 45% hydrolyzed polyvinyl alcohol supplied as a low viscosity solution in a water/isopropyl alcohol solution. It has been specifically developed as a secondary suspending agent for vinyl chloride suspension polymerization. It may be used in conjunction with conventional primary suspending agents. Alcotex 45 should be pumped directly into the reactor, usually after the water and primary suspending agent have been added. The level of primary suspending agent may need to be reduced to maintain the correct grain size. Alcotex 45 can be used over the whole molecular weight range, at high K values to increase plasticizer absorption and at low K values to improve VCM release. Alcotex 45 is delivered in bulk by road tanker.

Properties Suppliers
ALCOTEX 552P

Alcotex 552P is an aqueous solution of a 55% hydrolyzed polyvinyl alcohol. It has been developed by Synthomer Ltd as a porosity enhancement agent for PVC suspension polymerization. It has low residual methanol content. Alcotex 552P can be used in conjunction with conventional primary suspending agents. Alcotex 552P can be charged either directly to the reactor or pumped into a flowing water charge line. It is desirable to add Alcotex 552P after at least some of the primary suspending agent has been added. It may be necessary to reduce the primary suspending agent level, to maintain grain size, as Alcotex 552P will tend to reduce it. Alcotex 552P can be used over the whole molecular weight range, at high K values to increase plasticizer absorption and at low K values to improve VCM release.

Properties Suppliers
ALCOTEX 7206

Alcotex 7206 is a 72.5% hydrolyzed, low/ medium molecular weight polyvinyl alcohol which have been specially developed for use as a primary suspending agent for vinyl chloride suspension polymerization. Alcotex 7206 can be used to make PVC with a wide range of porosities and bulk densities.

Properties Suppliers
ALCOTEX 80

Alcotex 80 is an 80% hydrolyzed high molecular weight polyvinyl alcohol which has been specially developed for use as a primary suspending agent for vinyl chloride suspension polymerization. Alcotex 80 is used to make PVC with a wide range of porosities and bulk densities.

Properties Suppliers
ALCOTEX 8048

Alcotex 8048 is an 80% hydrolyzed, high molecular weight polyvinyl alcohol which has been specially developed for use as a primary suspending agent for vinyl chloride suspension polymerization. Alcotex 8048 is used to make PVC with a wide range of porosities and bulk densities.

Properties Suppliers
ALCOTEX 864

Alcotex 864 is a polyvinyl alcohol, internally plasticized and supplied in a water solution. Alcotex 864 has a medium high hydrolysis level and a low molecular weight. Alcotex 864 may be poured or pumped using a wide variety of normal processing equipment. Care should be taken not to entrain air into the product during handling or mixing and if required, suitable antifoam may be used. Alcotex 864 is stable under normal storage conditions, but extremes of temperature should be avoided. At low temperatures the product’s viscosity increases significantly and a hazy solution is observed. Alcotex 864 should be stored in sealed containers as received.

Properties Suppliers
ALCOTEX 8847

Alcotex 8847 is an 88% hydrolyzed polyvinyl alcohol for use in specialty applications such as vinyl acetate containing copolymer resins as well as in standard grades. Alcotex 8847 is a high molecular weight polyvinyl alcohol giving a high colloidal stability in PVC suspension polymerization.

Properties Suppliers