Abstract Vinyl halide polymers characterized by superior mill roll release at high temperature and resistance to ''''plate out,'''' are attained by modifying the polymers with a multiphase acrylic composite polymer comprising (A) a first non-crosslinked phase of molecular weight of up to 450,000 polymerized from a first monomer emulsion or solution of at least 25 weight percent of at least one alkyl acrylate, wherein said alkyl group has 1 to 18 carbon atoms, 0 to 75 weight percent of another acrylic monomer and 0 to 75 percent of another copolymerizable ethylenically unsaturated monomer, and (B) a final, rigid thermoplastic phase polymerized in the presence of the first phase from an emulsion or solution of about 35 to 100 weight percent of at least one monomer which is a methacrylate, acrylate, styrene or substituted styrene, 0 to 65 weight percent of another acrylic monomer, and 0 to 65 weight percent of another copolymerizable ethylenically unsaturated monomer, wherein the rigid thermoplastic phase has a molecular weight of from about 400,000 to about 5 X 10.hu 6.
A COMPOSITION HAVING SUPERIOR ROLL RELEASE PROPERTIES COMPRISING OF BLEND OF ABOUT 75 TO 99.9 WEIGHT PERCENT VINYL HALIDE POLYMER OR COPOLMER OF VINYL HALIDE WITH UP TO ABOUT 20 PERCENT BY WEIGHT OF ANOTHER MONOVINYLIDENE COMPOUND COPOLYMERIZABLE THEREWITH, AND ABOUT 0.1 TO 25 WEIGHT PERCENT OF THE MULTIPHASE ACRYLIC COMPOSITE POLYMER COMPRISING 50 TO 90 WEIGHT PERCENT (A) A FIRST NON-CROSSLINKED PHASE OF VISCOSITY AVERAGE MOLECULAR WEIGHT OF ABOUT 7,500 TO 50,000 POLYMERIZED FROM A FIRST MONOMER EMULSION OF AT LEAST 25 WEIGHT PERCENT OF AT LEAST ONE ALKYL ACRYLATE WHEREIN SAID ALKYL GROUP HAS 1 TO 18 CARBON ATOMS, 0 TO 75 WEIGHT PERCENT OF ANOTHER ACRYLIC MONOMER AND 0 TO 75 PERCENT OF ANOTHER COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER; AND 10 CTO 50 WEIGHT PERCENT (B) A FINAL, RIGID THERMOPLASTIC PHASE POLYMERIZED IN THE PRESENCE OF SAID FIRST PHASE FROM AN EMULSION OF ABOUT 35 TO 100 WEIGHT PERCENT OF AT LEAST ONE MONOMER WHICH IS METHACRYLATE, ACRYLATE, STYRENE OR SUBSTITUTED STYRENE, 0 TO 65 WEIGHT PERCENT OF ANOTHER COPOLYMERIZABLE ETHYLAND 0 TO 65 WEIGHT PERCENT OF ANOTHER COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER, WHEREIN THE RIGID THERMOPLASTIC PHASE HAS A VISCOSITY AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 400,000 TO 5 X 106
Claim 2
Dependent Claim
203 words
A COMPOSITION HAVING SUPERIOR ROLL RELEASE PROPERTIES COMPRISING OF BLEND OF ABOUT 75 TO 99.9 WEIGHT PERCENT VINYL HALIDE POLYMER OR COPOLMER OF VINYL HALIDE WITH UP TO ABOUT 20 PERCENT BY WEIGHT OF ANOTHER MONOVINYLIDENE COMPOUND COPOLYMERIZABLE THEREWITH, AND ABOUT 0.1 TO 25 WEIGHT PERCENT OF THE MULTIPHASE ACRYLIC COMPOSITE POLYMER COMPRISING 50 TO 90 WEIGHT PERCENT (A) A FIRST NON-CROSSLINKED PHASE OF VISCOSITY AVERAGE MOLECULAR WEIGHT OF ABOUT 7,500 TO 50,000 POLYMERIZED FROM A FIRST MONOMER EMULSION OF AT LEAST 25 WEIGHT PERCENT OF AT LEAST ONE ALKYL ACRYLATE WHEREIN SAID ALKYL GROUP HAS 1 TO 18 CARBON ATOMS, 0 TO 75 WEIGHT PERCENT OF ANOTHER ACRYLIC MONOMER AND 0 TO 75 PERCENT OF ANOTHER COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER; AND 10 CTO 50 WEIGHT PERCENT (B) A FINAL, RIGID THERMOPLASTIC PHASE POLYMERIZED IN THE PRESENCE OF SAID FIRST PHASE FROM AN EMULSION OF ABOUT 35 TO 100 WEIGHT PERCENT OF AT LEAST ONE MONOMER WHICH IS METHACRYLATE, ACRYLATE, STYRENE OR SUBSTITUTED STYRENE, 0 TO 65 WEIGHT PERCENT OF ANOTHER COPOLYMERIZABLE ETHYLAND 0 TO 65 WEIGHT PERCENT OF ANOTHER COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER, WHEREIN THE RIGID THERMOPLASTIC PHASE HAS A VISCOSITY AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 400,000 TO 5 X 106
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein the vinyl halide is vinyl chloride.
Claim 4
Dependent Claim
26 words
The composition of claim 2 comprising 80 to 99 weight percent poly (vinyl chloride) and 1 to 10 weight percent of the multiphase acrylic composite polymer.