Polyester resin composition

Claim 2

A polyester composition comprising a blend of a polyester having an anisotropic phase, 1 to 70 percent by weight, based on the composition, of a filler and 0.05 to 10 percent by weight, based on the filler, of a polyamide, wherein prior to blending with the polyester, the surface of the filler is treated with the polyamide, or the polyamide is added to the filler.

Claim 3

The polyester composition of claim 1, wherein the filler is carbon fiber.

Claim 4

The polyester composition of claim 1, wherein the polyester comprises one or more aromatic hydroxy-carboxylic acids.

Claim 5

The polyester composition of claim 2, wherein the aromatic hydroxy-carboxylic acids are selected from 4-hydroxybenzoic acid, 3-hydroxy benzoic acid, 6-hydroxy-2-naphthoic acid, 6-hydroxy-1-naphthoic acid, 3-methyl-4-hydroxy benzoic acid, 3,5-dimethyl-4-hydroxy benzoic acid, 2,6-dimethyl-4-hydroxy benzoic acid, 3-methoxy-4-hydroxy benzoic acid, 3,5-dimethoxy-4-hydroxy benzoic acid, 6-hydroxy-5-methyl-2-naphthoic acid, 6-hydroxy-5-methoxy-2-naphthoic acid, 3-chloro-4-hydroxy benzoic acid, 2-chloro-4-hydroxy benzoic acid, 2,3-dichloro-4-hydroxy benzoic acid, 3,5-dichloro-4-hydroxy benzoic acid, 2,5-dichloro-4-hydroxy benzoic acid, 3-bromo-4-hydroxy benzoic acid, 6-hydroxy-5-chloro-2-naphthoic acid, 6-hydroxy-7-chloro-2-naphthoic acid, 6-hydroxy,5,7-dichloro-2-naphthoic acid or mixtures thereof.

Claim 6

The polyester composition of claim 1, wherein the polyester comprises one or more members selected from the group consisting of aromatic dicarboxylic acids, alicyclic dicarboxylic acids and mixtures thereof; and one or more members selected from the group consisting of aromatic diols, alicyclic diols, aliphatic diols and mixtures thereof.

Claim 7

The polyester composition of claim 5, wherein the aromatic dicarboxylic acids are selected from terephthalic acid, 4,4'-diphenyl dicarboxylic acid, 4,4'-triphenyl dicarboxylic acid, 2,6-naphthalene dicarboxylic acid, diphenyl ether-4,4'-dicarboxylic acid, diphenoxy ethane-4,4'-dicarboxylic acid, diphenoxy butane-4,4'-dicarboxylic acid, diphenyl ethane-4,4'-dicarboxylic acid, isophthalic acid, diphenyl ether-3,3'-dicarboxylic acid, diphenoxy ethane-3,3'-dicarboxylic acid, diphenyl ethane-3,3'-dicarboxylic acid, and naphthalene-1,6-dicarboxylic acid, chloro-terephthalic acid, dichloroterephthalic acid, bromo-terephthalic acid, ethyl terephthalic acid, methoxy terephthalic acid, ethoxy terephthalic acid, or mixtures thereof.

Claim 8

The polyester composition of claim 5, wherein the alicyclic dicarboxylic acids are selected from trans,1,4-cyclohexane dicarboxylic acid, cis-1,4-cyclohexane dicarboxylic acid, 1,3-cyclohexane dicarboxylic acid, trans-1,4-(1-methyl)cyclohexane dicarboxylic acid, trans-1,4-(1-chloro)cyclohexane dicarboxylic acid or mixtures thereof.

Claim 9

The polyester composition of claim 5, wherein the aromatic diols are selected from hydroquinone resorcinol, 4,4'-dihydroxy diphenyl, 4,4'-dihydroxy triphenyl, 2,6-naphthalene diol, 4,4'-dihydroxy diphenyl ether, bis-(4,hydroxyphenoxy)ethane, 3,3'-dihydroxy diphenyl, 3,3'-dihydroxy diphenyl ether, 1,6-naphthalene diol, 2,2-bis(4-hydroxyphenyl)propane, 2,2-bis(4-hydroxyphenyl)methane, alkyl-, alkoxy-, or halogen-substituted derivatives thereof or mixtures thereof.

Claim 10

The polyester composition of claim 5, wherein the alicyclic diols are trans-1,4-cyclohexane diol, cis-1,4-cyclohexane diol, trans-1,4-cyclohexane diol, trans-1,3-cyclohexane diol, cis-1,2-cyclohexane diol, and trans-1,3-cyclohexane dimethanol, trans-1,4-(b 1-methyl)cyclohexane diol, trans-1,4-(1-chloro)cyclohexane diol, or mixtures thereof.

Claim 11

The polyester composition of claim 5, wherein the aliphatic diols are selected from the ethylene glycol, 1,3-propane diol, 1,4-butane diol, neopentyl glycol or mixtures thereof.

Claim 12

The polyester composition of claim 5, wherein the polyester further comprises one or more aromatic hydroxy-carboxylic acids.

Claim 13

The polyester composition of claim 11, wherein the aromatic hydroxy-carboxylic acids are selected from 4-hydroxy benzoic acid, 3-hydroxy benzoic acid, 6-hydroxy-2-naphthoic acid, 6-hydroxy-1-naphthoic acid, 3-methyl-4-hydroxy benzoic acid, 3,5-dimethyl-4-hydroxy benzoic acid, 2,6-dimethyl-4-hydroxy benzoic acid, 3-methoxy-4-hydroxy benzoic acid, 3,5-dimethoxy-4-hydroxy benzoic acid, 6-hydroxy-5-methyl-2-naphthoic acid, 6-hydroxy-5-methoxy-2-naphthoic acid, 3-chloro-4-hydroxy benzoic acid, 2-chloro-4-hydroxy benzoic acid, 2,3-dichloro-4-hydroxy benzoic acid, 3,5-dichloro-4-hydroxy benzoic acid, 2,5-dichloro-4-hydroxy benzoic acid, 3-bromo-4-hydroxy benzoic acid, 6-hydroxy-5-chloro-2-naphthoic acid, 6-hydroxy-7-chloro-2-naphthoic acid, 6-hydroxy,5,7-dichloro-2-naphthoic acid or mixtures thereof.

Claim 14

The polyester composition of claim 5, wherein the polyester has a weight average molecular weight of from about 2,000-200,000.

Claim 15

The polyester composition of claim 5, wherein the polyester comprises about 10 mol% or more of 6-hydroxy-2-naphthalene, 2,6-dihydroxy naphthalene, 2,6-dicarboxy naphthalene or mixtures thereof.

Claim 16

The polyester composition of claim 1, wherein the polyester is a member selected from (a) a polyester containing about 10 to 90 mol% of units of ##STR17## and about 10 to 90 mol% of units of ##STR18## (b) a polyester containing about 40-60 mol% of units ##STR19## about 20-30 mol% of units of ##STR20## about 20-30 mol% of units of ##STR21## (c) a polyester containing about 20-60 mol% of units of ##STR22## about 5-18 mol% of units of ##STR23## about 5-35 mol% of units of ##STR24## and about 20-40 mol% of unit of ##STR25## wherein R represents methyl, chloro, bromo or mixtures thereof, (d) a polyester containing about 20-40 mol% of units of ##STR26## about 10 mol%-50 mol% of units of ##STR27## about 5-30 mol% of dioxyaryl units of (O--Ar-O), wherein Ar represent a bivalent group containing at least one aromatic ring; and about 5-30 mol% of dicarboxyaryl units of ##STR28## wherein Ar' represents a bivalent group containing at least one aromatic ring, or (e) a polyester containing 10-90 mol% of units of ##STR29## about 5-45 mol% of dioxyaryl units of O--Ar--O wherein Ar denotes a bivalent group including at least one aromatic ring, and about 5-45 mol% dicarboxyaryl units of ##STR30## wherein Ar' denotes a bivalent group including at least one aromatic ring.

Claim 17

The polyester composition of claim 1, wherein the polyamide is nylon-6, nylon-66, nylon-11 or nylon 12.

Claim 18

The polyester composition of claim 1, wherein the polyamide is a solvent-soluble polyamide.