Vinyl chloride polymer composition

Claim 2

A vinyl chloride polymer composition having an excellent workability, comprising:

Claim 3

(1) 80 to 99.95% by weight of a polymeric ingredient (I) consisting of at least one member selected from the group consisting of polyvinyl chloride and copolymers of 80% by weight or more of vinyl chloride and 20 % by weight or less of at least one other ethylenically unsaturated comonomer, and;

Claim 4

(1) 80 to 99.95% by weight of a polymeric ingredient (I) consisting of at least one member selected from the group consisting of polyvinyl chloride and copolymers of 80% by weight or more of vinyl chloride and 20 % by weight or less of at least one other ethylenically unsaturated comonomer, and;

Claim 5

(2) 0.05 to 20% by weight of a polymeric ingredient (II) consisting of at least one polymerization product which has been prepared by the steps of: (A) first polymerizing, in the presence of 5 to 45 parts by weight of a polymeric ' domponeht (a) consisting of at least one member -selected from the group consisting of polymethyl methacrylate and copolymers of 50% by weight or more of methyl methacrylate and 50% by weight or less of at least one other ethylenically unsaturated comonomer, 40 to 70 parts by weight of a first monomeric component (b) consisting of a member selected from the group consisting of alkyl acrylates in which the alkyl group has 1 to 18 carbon atoms, benzyl acrylate, mixtures of two or more of the above-mentioned compounds and monomeric mixtures of 30% by weight or more of at least one member selected from the group consisting of alkyl acrylates in which the alkyl group has 1 to 18 carbon atoms and benzyl acrylate and 70% by weight or less of at least one alkyl methacrylate in which the alkyl group has 1 to 18 carbon atoms, under a polymerization condition which will cause a solution of 0.1 g of a polymerization product from said monomeric component (b) alone in 100 ml of chloroform to exhibit a reduced viscosity of 1 or less at a temperature of 25°C, and then; (B) second polymerizing, in the presence of the first polymerization product, 5 to 40 parts by weight of a second monomeric component (c) consisting of a member selected from the group consisting of methyl methacrylate and monomeric mixtures of 50% by weight or more of methyl methacrylate and 50% by weight or less of at least one other ethylenically unsaturated comonomer, the sum of the polymeric component (a), the first monomeric component (b) and the second monomeric component (c) being 100 parts by weight.

Claim 6

(2) 0.05 to 20% by weight of a polymeric ingredient (II) consisting of at least one polymerization product which has been prepared by the steps of: (A) first polymerizing, in the presence of 5 to 45 parts by weight of a polymeric ' domponeht (a) consisting of at least one member -selected from the group consisting of polymethyl methacrylate and copolymers of 50% by weight or more of methyl methacrylate and 50% by weight or less of at least one other ethylenically unsaturated comonomer, 40 to 70 parts by weight of a first monomeric component (b) consisting of a member selected from the group consisting of alkyl acrylates in which the alkyl group has 1 to 18 carbon atoms, benzyl acrylate, mixtures of two or more of the above-mentioned compounds and monomeric mixtures of 30% by weight or more of at least one member selected from the group consisting of alkyl acrylates in which the alkyl group has 1 to 18 carbon atoms and benzyl acrylate and 70% by weight or less of at least one alkyl methacrylate in which the alkyl group has 1 to 18 carbon atoms, under a polymerization condition which will cause a solution of 0.1 g of a polymerization product from said monomeric component (b) alone in 100 ml of chloroform to exhibit a reduced viscosity of 1 or less at a temperature of 25°C, and then; (B) second polymerizing, in the presence of the first polymerization product, 5 to 40 parts by weight of a second monomeric component (c) consisting of a member selected from the group consisting of methyl methacrylate and monomeric mixtures of 50% by weight or more of methyl methacrylate and 50% by weight or less of at least one other ethylenically unsaturated comonomer, the sum of the polymeric component (a), the first monomeric component (b) and the second monomeric component (c) being 100 parts by weight.

Claim 7

A composition as claimed in claim 1, which comprises: (1) 99.9 to 80% by weight of a polymeric ingredient (I) consisting of at least one member selected from the group consisting of polyvinyl chloride and copolymers of 80% by weight or more of vinyl chloride and 20% by weight or less of another ethylenically unsaturated comonomer, and; (2) 0.1 to 20% by weight of a polymeric ingredient (II) consisting of at least one polymerization product which has been prepared by the steps of: (A) first polymerizing, in the presence of 10 to 45 parts by weight of a polymeric component (a) consisting of at least one member selected from the group consisting of polymethyl methacrylate and copolymers of.80% by weight or more of methyl metharylate and 20% by weight or less of at least one other ethylenically unsaturated comonomer, 40 to 70 parts by weight of a first monomeric component (b) consisting of a copolymer of 30 to 70% by weight of at least one alkyl acrylate in which the alkyl group has 1 to 18 carbon atoms with 30 to 70% by weight of at least one alkyl methacrylate in which the alkyl group has 1 to 18 carbon atoms, under a polymerization condition which will cause a solution of 0.1 g of a polymerization product of said first monomeric component (b) alone in 100 ml of chloroform to exhibit a reduced viscosity of 1.0 or less at a temperature of 25°C, and, then; (B) second polymerizing, in the presence of the first polymerization product, 5 to 40 parts by weight of a second monomeric component (c) consisting of a member selected from the group consisting of methyl methacrylate and monomeric mixtures of 50% by weight or more of methyl methacrylate and 50% by weight or less of at least one other ethylenically unsaturated comonomer, under a polymerization condition which will cause a polymerization product of said second monomeric component (c) alone to exhibit a reduced viscosity of 2.0 or more measured at a concentration of 0.1 g/100 ml of chloroform at a temperature of 25°C, the sum of the polymeric component (a), the first monomeric component (b) and the second monomeric component (c) being 100 parts by weight.

Claim 8

A composition as claimed in claim 1, wherein said polymeric component (a) has a reduced viscosity of 2.0 or less measured at a concentration of 0.1 g/100 ml of chloroform at a temperature of 25°C.

Claim 9

A composition as claimed in claim 1, wherein the amounts of said polymeric component (a), said first monomeric component (b) and said second monomeric component (c) are respectively 20 to 40, 50 to 60 and 5 to 40 parts by weight, the sum of the above-mentioned components (a), (b) and (c) being 100 parts by weight.

Claim 10

A composition as claimed in claim 1, wherein said polymeric component (a) consists of a polymethyl methacrylate alone.

Claim 11

A composition as claimed in claim 1, wherein said alkyl acrylate in said first monomeric component (b) is selected from the group consisting of ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, octyl acrylate and 2-ethyl hexyl acrylate.

Claim 12

A composition as claimed in claim 1, wherein said second monomeric component (c) consists of methyl methacrylate alone.

Claim 13

A composition as claimed in claim 1, wherein said polymeric component (a) consists of polymethyl methacrylate alone, said first monomeric component (b) consists of at least one member selected from the group consisting of ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, octyl acrylate, 2-ethylhexyl acrylate and benzyl acrylate, and said second monomeric component (c) consists of methyl methacrylate alone.