The B. F. Goodrich Company

The Geon Company

Pmd Holdings Corp.

Zaev Sharaby

Robert G Vielhaber

Josef C Vyvoda

Murali Rajagopalan

Chlorinated polyvinyl chloride (CPVC) is prepared from polyvinyl chloride (PVC). When PVC is made utilizing polyvinyl alcohol, the low molecular weight CPVC compound so prepared is colored. A low molecular weight CPVC compound prepared from PVC that was made in the presence of a cellulose ether instead of polyvinyl alcohol resulted in a very low color compound having a DE of O by definition. However, a CPVC compound prepared from PVC made in the presence of polyvinyl alcohol resulted in a relatively high color (DE 18.51). During the polymerization of vinyl chloride, polyvinyl alcohol is replaced with the hydroxypropylmethyl cellulose ether having a methoxyl substitution of 15-35 percent and a hydroxypropoxyl substitution of from 4-35 percent.

Disperant system for making polyvinyl chloride which produces low color chlorinated polyvinyl chloride

Copolymers of vinyl or vinylidene halides and vinyl esters of fatty acids having low molecular weights, good particle characteristics, and improved melt flow are made by aqueous polymerization utilizing an effective amount of a mercaptan as a chain transfer agent, wherein the chain transfer agent is admixed with the vinyl esters to form a chain transfer composition, and the composition be added before the start of the polymerization.

Aqueous suspension process for producing copolymers of vinyl chloride

A polyvinyl halide ionomer which contains in the polymer backbone at least one vinyl halide monomer in polymerized form or at least one vinyl halide monomer and at least one other monomer copolymerizable with vinyl chloride and less than 50% by weight of the ionomer a comonomer containing at least one ester group and at least one neutralized carboxyl group. The ionomer is prepared by neutralizing, preferably in a molten state, a functionalized vinyl halide copolymer containing pendant carboxyl groups. The ionomer has outstanding adhesion to metals and its glass transition temperature is higher than the carboxyl vinyl halide copolymer.

Polyvinyl halide ionomers

Mercaptan chain transfer agent compositions useful in aqueous

Dispersant system for making polyvinyl chloride which produces low color

Thermoplastic polymers exhibiting improved physical properties and a method for preparing same compositions comprises reacting a functionalized base polymer composition having pendant cyclic anhdyride groups with a coreactive second moiety. Said functionalized base polymer comprises the reaction product of:

Reactive polyvinyl chloride and polymer products made therefrom

Thermoplastic polymers exhibiting improved physical properties and a method for preparing same are described. The method of preparing these polymer compositions comprises reacting a functionalized base polymer composition having pendant cyclic anhydride groups with a coreactive second moiety. Said functionalized base polymer comprises the reaction product of:

A process for producing porous, low molecular weight vinyl polymers and copolymers via suspension polymerization in the presence of a dual function porosifier/low molecular weight modifier is disclosed. The process is especially advantageous in that it can be run at a wide variety of temperatures to obtain super porous, low molecular weight resins. Novel super porous, low molecular weight resins are also disclosed.

Super porous low molecular weight vinyl halide resins

Vinyl halide copolymer resins having relatively high porosity levels are produced by polymerizing a vinyl halide with a comonomer of an acrylated caprolactone. The product produced exhibits high absorbtivity of plasticizer, easy processability and films made therefrom have low fish-eye content.

Porous copolymer resins

Copolymers of vinyl or vinylidene halides and vinyl esters of C.sub.2 and C.sub.3 acids are provided having low molecular weights, good particle characteristics, and improved melt flow are made by aqueous polymerization utilizing an effective amount of a mercaptan as a chain transfer agent, wherein the chain transfer agent is admixed with the vinyl esters to form a chain transfer composition, and may be added before the start of the polymerization.

Low molecular weight copolymers of vinyl halide/vinyl acetate produced

Copolymers of vinyl or vinylidene halides and vinyl esters of fatty acids having low molecular weights, good particle characteristics, and improved melt flow are made by aqueous polymerization utilizing an effective amount of a mercaptan as a chain transfer agent, wherein the chain transfer agent is admixed with the vinyl ester to form a chain transfer composition, and the composition be added before the start of the polymerization.

Growing community of inventors

South Euclid, OH, United States of America

Zaev Sharaby