Polyblends of thermoplastic copolyesters and styrenic/unsaturated dicarboxylic acid anhydride copolymers

Claim 2

A thermoplastic molding composition comprising: (a) from 95 to 70% by weight based on the total weight of (a) and (b) of a copolyester of a dicarboxylic acid moiety, at least 50 mole percent of which is terephthalic acid, and a dihydric alcohol moiety, at least 50 mole percent of which is ethylene glycol, and from 20 to 50 mole percent of which is diethylene glycol of 1,4-cyclohexanedimethanol, the copolyester having a glass transition temperature (Tg) of about 40° to 85° C. and an inherent viscosity (I.V.) of about 0.2 to 10; and (b) from 5 to 30% by weight based on the total weight of (a) and (b) of a copolymer prepared utilizing 45 to 83% by weight based on the weight of the copolymer of a styrenic monomer 55 17% by weight based on the weight of the copolymer of an unsaturated dicarboxylic acid anhydride; and optionally from 0 to 20% by weight based on the weight of the copolymer of an alkyl (meth)acrylic ester wherein the alkyl group contains 1 to 3 carbon atoms; wherein the T Transmittance of the molding composition is 80.00 minimum.

Claim 3

The molding composition of claim 1 wherein the IDI is 50.0 Joules minimum and the MMP is 6.4 MPa maximum.

Claim 4

The molding composition of claim 1 wherein the styrenic monomer is styrene.

Claim 5

The molding composition of claim 1 wherein the unsaturated dicarboxylic acid anhydride is maleic anhydride.

Claim 6

The molding composition of claim 1 wherein the alkyl acrylic ester is methyl methacrylate.

Claim 7

Molded articles prepared from a thermoplastic molding composition comprising: (a) from 95 to 70% by weight based on the total weight of (a) and (b) of a copolyester of a dicarboxylic acid moiety, at least 50 mole percent of which is terephthalic acid, and a dihydric alcohol moiety, at least 50 mole percent of which is ethylene glycol and 20 to 50 mole percent of which is diethylene glycol or 1,4-cyclohexanedimethanol, the copolyester having a glass transition temperature (Tg) of about 40° to 85° C. and an inherent viscosity of about 0.2 to 10; and (b) from 5 to 30% by weight based on the total weight of (a) and (b) of a copolymer prepared utilizing 45 to 83% by weight based on the weight of the copolymer of a styrenic monomer; 55 to 17% by weight based on the weight of the copolymer of an unsaturated dicarboxylic acid anhydride; and optionally from 0 to 20% by weight based on the weight of the copolymer of an alkyl (meth) acrylic ester wherein the alkyl group contains 1 to 3 carbon atoms; wherein the T Transmittance of the molded articles is 80.00 minimum.

Claim 8

Molded articles prepared from a thermoplastic molding composition comprising: (a) from 95 to 70% by weight based on the total weight of (a) and (b) of a copolyester of a dicarboxylic acid moiety, at least 50 mole percent of which is terephthalic acid, and a dihydric alcohol moiety, at least 50 mole percent of which is ethylene glycol and 20 to 50 mole percent of which is diethylene glycol or 1,4-cyclohexanedimethanol, the copolyester having a glass transition temperature (Tg) of about 40° to 85° C. and an inherent viscosity of about 0.2 to 10; and (b) from 5 to 30% by weight based on the total weight of (a) and (b) of a copolymer prepared utilizing 45 to 83% by weight based on the weight of the copolymer of a styrenic monomer; 55 to 17% by weight based on the weight of the copolymer of an unsaturated dicarboxylic acid anhydride; and optionally from 0 to 20% by weight based on the weight of the copolymer of an alkyl (meth) acrylic ester wherein the alkyl group contains 1 to 3 carbon atoms; wherein the T Transmittance of the molded articles is 80.00 minimum.

Claim 9

The molded articles of claim 6 wherein the IDI is 50.0 Joules minimum and the MMP is 6.4 MPa maximum.

Claim 10

A thermoplastic molding composition comprising: (a) from 95 to 70% by weight based on the total weight of (a) and (b) of a copolyester of a dicarboxylic acid moiety, at least 50 mole percent of which is terephthalic acid, and a dihydric alcohol moiety, at least 50 mole percent of which is ethylene glycol and 20 to 50 mole percent of which is diethylene glycol or 1,4-cyclohexanedimethanol, the copolyester having a glass transition temperature (Tg) of about 40° to 85° C. and an inherent viscosity (I.V.) of about 0.2 to 10; and (b) from 5 to 30% by weight based on the total weight of (a) and (b) of a copolymer prepared utilizing 55 to 83% by weight based on the weight of the copolymer of a styrenic monomer; 35 to 15% by weight based on the weight of the copolymer of an unsaturated dicarboxylic acid anhydride; and 10 to 2% by weight based on the weight of the copolymer of an alkyl methacrylate wherein the alkyl group contains 1 to 3 carbon atoms. wherein the % Transmittance of the molding composition is 80.00 minimum.

Claim 11

A thermoplastic molding composition comprising: (a) from 95 to 70% by weight based on the total weight of (a) and (b) of a copolyester of a dicarboxylic acid moiety, at least 50 mole percent of which is terephthalic acid, and a dihydric alcohol moiety, at least 50 mole percent of which is ethylene glycol and 20 to 50 mole percent of which is diethylene glycol or 1,4-cyclohexanedimethanol, the copolyester having a glass transition temperature (Tg) of about 40° to 85° C. and an inherent viscosity (I.V.) of about 0.2 to 10; and (b) from 5 to 30% by weight based on the total weight of (a) and (b) of a copolymer prepared utilizing 55 to 83% by weight based on the weight of the copolymer of a styrenic monomer; 35 to 15% by weight based on the weight of the copolymer of an unsaturated dicarboxylic acid anhydride; and 10 to 2% by weight based on the weight of the copolymer of an alkyl methacrylate wherein the alkyl group contains 1 to 3 carbon atoms. wherein the % Transmittance of the molding composition is 80.00 minimum.

Claim 12

The molding composition of claim 8 wherein the IDI is 50.00 Joules minimum and the MMP is 6.4 MPa maximum.

Claim 13

The molding composition of claim 8 wherein the styrenic monomer is styrene.

Claim 14

The molding composition of claim 8 wherein the unsaturated dicarboxylic acid anhydride is maleic anhydride.

Claim 15

The molding composition of claim 8 wherein the alkyl methacrylate is methyl methacrylate.

Claim 16

Molded articles prepared from a thermoplastic molding composition comprising: (a) from 95 to 70% by weight based on the total weight of (a) and (b) of a copolyester of a dicarboxylic acid moiety, at least 50 mole percent of which is terephthalic acid, and a dihydric alcohol moiety, at least 50 mole percent of which is ethylene glycol and 20 to 50 mole percent of which is diethylene glycol or 1,4-cyclohexanedimethanol, the copolyester having a glass transition temperature (Tg) of about 40° to 85° C. and an inherent viscosity (I.V.) of about 0.2 to 10; and (b) from 5 to 30% by weight based on the total weight of (a) and (b) of a copolymer prepared utilizing 55 to 83% by weight based on the weight of the copolymer of a styrenic monomer; 35 to 15% by weight based on the weight of the copolymer of an unsaturated dicarboxylic acid anhydride; and 10 to 2% by weight based on the weight of the copolymer of an alkyl methacrylate wherein the alkyl group contains 1 to 3 carbon atoms; wherein the % Transmittance of the molded articles is 80.00 minimum.

Claim 17

Molded articles prepared from a thermoplastic molding composition comprising: (a) from 95 to 70% by weight based on the total weight of (a) and (b) of a copolyester of a dicarboxylic acid moiety, at least 50 mole percent of which is terephthalic acid, and a dihydric alcohol moiety, at least 50 mole percent of which is ethylene glycol and 20 to 50 mole percent of which is diethylene glycol or 1,4-cyclohexanedimethanol, the copolyester having a glass transition temperature (Tg) of about 40° to 85° C. and an inherent viscosity (I.V.) of about 0.2 to 10; and (b) from 5 to 30% by weight based on the total weight of (a) and (b) of a copolymer prepared utilizing 55 to 83% by weight based on the weight of the copolymer of a styrenic monomer; 35 to 15% by weight based on the weight of the copolymer of an unsaturated dicarboxylic acid anhydride; and 10 to 2% by weight based on the weight of the copolymer of an alkyl methacrylate wherein the alkyl group contains 1 to 3 carbon atoms; wherein the % Transmittance of the molded articles is 80.00 minimum.

Claim 18

The molded articles of claim 13 wherein the IDI is 50.0 Joules minimum and the MMP is 6.4 MPa maximum.