Ternary polycarbonate compositions

Claim 2

A ternary polycarbonate composition comprising an admixture of a high molecular weight aromatic polycarbonate, a minor amount of a styrene/butadiene/caprolactone block copolymer, and a minor amount of an acrylate copolymer or an olefin-acrylate copolymer, said acrylate copolymer being a copolymer of a C 1 -C 5 acrylate and a C 1 -C 5 methacrylate, said olefin-acrylate copolymer being a C 2 -C 5 olefin and a C 1 -C 5 acrylate copolymer.

Claim 3

The composition of claim 1 wheren said styrene/butadiene/caprolactone block copolymer is present in an amount of about 0.5-4.0 parts by weight per hundred parts of said aromatic polycarbonate.

Claim 4

The composition of claim 2 wherein said block copolymer is present in an amount of about 1.0-3.0 parts by weight.

Claim 5

The composition of claim 1 wherein the weight ratio of styrene:butadiene:caprolactone in said block copolymer is in the range of about 25-60:30-50:25-10.

Claim 6

The composition of claim 4 wherein said weight ratio is 1:2:1.

Claim 7

The composition of claim 1 wherein said acrylate copolymer is present in an amount of about 2-6 parts by weight per hundred parts of said aromatic polycarbonate.

Claim 8

The composition of claim 6 wherein said acrylate copolymer is present in an amount of about 3-5 parts by weight.

Claim 9

The composition of claim 1 wherein the acrylate portion of said acrylate copolymer is selected from the group consisting of ethyl acrylate, n-butyl acrylate, 1,3-butylene diacrylate, isobutyl acrylate, 1,4-butanediol diacrylate and methyl acrylate, the methacrylate portion of said acrylate copolymer is selected from the group consisting of methyl methacrylate, 1,3 butylene dimethacrylate, isobutyl methacrylate, butyl methacrylate and ethyl methacrylate

Claim 10

The composition of claim 8 wherein the weight ratio of acrylate:methacrylate in said acrylate copolymer ranges from about 15-50: 50-85.

Claim 11

The composition of claim 1 wherein the olefin portion of said olefin-acrylate copolymer is selected from the group consisting of ethylene, propylene and isobutylene, the acrylate portion of said olefin-acrylate copolymer is selected from the group consisting of ethyl acrylate, n-butyl acrylate, 1,3-butylene diacrylate, methyl acrylate, 1,4-butanediol diacrylate and isobutyl acrylate.

Claim 12

The composition of claim 10 wherein the weight ratio of olefin:acrylate in said olefin-acrylate copolymer is in the range of about 70-90: 10-30.

Claim 13

The composition of claim 10 wherein said olefin-acrylate copolymer is an ethylene-ethyl acrylate copolymer having a weight ratio of ethylene-ethyl acrylate of about 4.5:1.

Claim 14

The composition of claim 1 wherein said olefin-acrylate copolymer is present in an amount of about 0.5-4.0 parts by weight per hundred parts of said aromatic polycarbonate.

Claim 15

The composition of claim 13 wherein said olefin-acrylate copolymer is present in an amount of about 1-3 parts by weight.

Claim 16

The composition of claim 1 wherein the aromatic polycarbonate is derived from 2,2-bis(4-hydroxyphenyl)propane.

Claim 17

A ternary polycarbonate composition comprising an admixture of a high molecular weight aromatic polycarbonate; a styrene/butadiene/caprolactone block copolymer in an amount of about 0.5-4.0 parts by weight per hundred parts of said aromatic polycarbonate; and, an acrylate copolymer in an amount of about 2-6 parts by weight per hundred parts of said aromatic polycarbonate or an olefin-acrylate copolymer in an amount of about 0.5-4.0 parts by weight per hundred parts of said aromatic polycarbonate, said acrylate copolymer being a copolymer of a C 1 -C 5 acrylate and a C 1 -C 5 methacrylate with the acrylate portion being a member selected from the group consisting of methyl acrylate, ethyl acrylate, n-butyl acrylate, 1,3-butylene diacrylate, isobutyl acrylate, and 1,4-butanediol diacrylate, the methacrylate portion being a member selected from the group consisting of methyl methacrylate, ethyl methacrylate, butyl methacrylate, isobutyl methacrylate, and 1,3-butylene dimethacrylate, said olefin-acrylate copolymer being a C 2 -C 5 olefin and a C 1 -C 5 acrylate copolymer, said olefin portion being a member selected from the group consisting of ethylene, propylene and isobutylene, said acrylate portion being a member selected from the group consisting of ethyl acrylate, n-butyl acrylate, 1,3-butylene diacrylate, methyl acrylate, 1,4-butanediol diacrylate and isobutyl acrylate.

Claim 18

A ternary polycarbonate composition comprising an admixture of a high molecular weight aromatic polycarbonate; a styrene/butadiene/caprolactone block copolymer in an amount of about 0.5-4.0 parts by weight per hundred parts of said aromatic polycarbonate; and, an acrylate copolymer in an amount of about 2-6 parts by weight per hundred parts of said aromatic polycarbonate or an olefin-acrylate copolymer in an amount of about 0.5-4.0 parts by weight per hundred parts of said aromatic polycarbonate, said acrylate copolymer being a copolymer of a C 1 -C 5 acrylate and a C 1 -C 5 methacrylate with the acrylate portion being a member selected from the group consisting of methyl acrylate, ethyl acrylate, n-butyl acrylate, 1,3-butylene diacrylate, isobutyl acrylate, and 1,4-butanediol diacrylate, the methacrylate portion being a member selected from the group consisting of methyl methacrylate, ethyl methacrylate, butyl methacrylate, isobutyl methacrylate, and 1,3-butylene dimethacrylate, said olefin-acrylate copolymer being a C 2 -C 5 olefin and a C 1 -C 5 acrylate copolymer, said olefin portion being a member selected from the group consisting of ethylene, propylene and isobutylene, said acrylate portion being a member selected from the group consisting of ethyl acrylate, n-butyl acrylate, 1,3-butylene diacrylate, methyl acrylate, 1,4-butanediol diacrylate and isobutyl acrylate.

Claim 19

The composition of claim 16 wherein said block copolymer is present in an amount of about 1.0-3.0 parts by weight, said acrylate copolymer is present in an amount of about 3-5 parts by weight or said olefin-acrylate copolymer is present in an amount of about 1-3 parts by weight.

Claim 20

The composition of claim 16 wherein the weight ratio of styrene:butadiene:caprolactone in said block copolymer is in the range of about 25-60:30-50:25-10.

Claim 21

The composition of claim 18 wherein said block weight ratio is 1:2:1.

Claim 22

The composition of claim 16 wherein the weight ratio of acrylate: methacrylate in said acrylate copolymer ranges from about 15-50: 50-85.

Claim 23

The composition of claim 16 wherein the weight ratio of olefin: acrylate in said olefin-acrylate copolymer is in the range of about 70-90: 10-30.

Claim 24

The composition of claim 16 wherein said olefin-acrylate copolymer is an ethylene-ethyl acrylate copolymer having a weight ratio of ethylene: ethyl acrylate of about 4.5:1.

Claim 25

The composition of claim 16 wherein said aromatic polycarbonate is derived from 2,2-bis(4-hydroxy phenyl)propane.