Injection moldable amide-imide copolymers

Claim 2

A process for the preparation of random linear injection moldable amide-imide and amide copolymers having an inherent viscosity of about 0.6 to 3.0 which process comprises reacting fully or partially acylated aromatic diamines with aromatic tricarboxylic acid anhydrides, aromatic dicarboxylic acids or mixtures of aromatic dicarboxylic acids and aromatic tricarboxylic acid anhydrides in a molar ratio of about 9:1 to about 1:9 at a temperature of about 150° to 750° F., and wherein the molar ratio of the diamines to the anhydride or acid, and anhydride mixture is about 0.9:1 to 1.1:1 and at least 50% of the amine functionality is acylated in the presence of C 2 through C 8 containing aliphatic acids or C 4 to C 16 containing aliphatic anhydrides.

Claim 3

The process of claim 1 wherein the acid is isophthalic acid.

Claim 4

The process of claim 1 wherein the tricarboxylic acid anhydride compound is trimellitic anhydride.

Claim 5

The process of claim 1 wherein about 70 to 100 percent of the aromatic diamine is acylated.

Claim 6

The process of claim 4 wherein aromatic diamines contain one benzene ring or two benzene rings joined directly or by stable linkages consisting of --S--, --O--, ##STR4## --C-- or methylene radicals.

Claim 7

The process of claim 4 wherein the acylated diamines are prepared from oxybisaniline and metaphenylene diamine.

Claim 8

The process of claim 6 wherein the molar ratio of the oxybisaniline to the metaphenylene diamine is in the range of about 8:2 to about 2:8.

Claim 9

An injection moldable random linear polyamideimide copolymer prepared according to the process of claim 1 and comprising units of: ##STR5## wherein "Z" is a trivalent benzene ring or lower alkyl substituted trivalent benzene ring; R comprises R 1 and R 2 , R 1 and R 2 are divalent aromatic hydrocarbon radicals of from 6 to about 20 carbon atoms or two divalent hydrocarbon radicals of from 6 to 20 carbon atoms joined directly or by stable linkages selected from the group consisting of --O--, methylene, --CO--, --SO 2 --, and --S-- radicals and wherein said R 1 and R 2 containing units run from about 10 mole percent R 1 containing unit and about 90 mole percent R 2 containing unit to about 90 mole percent R 1 containing unit and about 10 mole percent R 2 containing unit.

Claim 10

The copolymer of claim 8 wherein R 1 is ##STR6##

Claim 11

The copolymer of claim 8 wherein Z is a trivalent benzene ring, R 1 is ##STR7## and wherein the concentration range runs from about 20 mole percent of the R 1 containing units and about 80 mole percent of the R 2 containing units to about 80 mole percent of the R 1 containing units and about 20 mole percent of the R 2 containing units.

Claim 12

The copolymer of claim 10 wherein the concentration range runs from about 40 mole percent of the R 1 containing units and about 60 mole percent of the R 2 containing units to about 60 mole percent of the R 1 containing units and about 40 mole percent of the R 2 containing units.

Claim 13

An injection moldable random linear polyamideimide copolymer prepared according to the process of claim 1 comprising units of ##STR8## wherein "Z" is a trivalent benzene ring; R comprises R 1 or a mixture of R 1 and R 2 , R 1 and R 2 are divalent aromatic hydrocarbon radicals of from 6 to about 20 carbon atoms or two divalent hydrocarbon radicals of from 6 to 20 carbon atoms joined directly or by stable linkages selected from the group consisting of --O--, methylene, --CO--, --SO 2 -- and --S-- radicals, and said R 1 and R 2 containing units run from about 10 mole percent R 1 containing units and 90 mole percent R 2 containing units to about 90 mole percent R 1 containing units to about 10 mole percent R 2 containing units and X is a divalent aromatic radical.

Claim 14

The copolymer of claim 12 wherein X is ##STR9##

Claim 15

A continuous process for the preparation of random linear injection moldable amide-imide and amide copolymers having an inherent viscosity of about 0.6 to 3.0 which continuous process comprises reacting fully or partially acylated aromatic diamines with aromatic tricarboxylic acid anhydrides, aromatic dicarboxylic acids, or mixtures of aromatic dicarboxylic acids and aromatic tricarboxylic acid anhydrides in a molar ratio of about 9:1 to 1:9 at a temperature of about 150° to 750° F. and wherein the molar ratio of the diamines to the anhydride or acid, or acid and anhydride mixture is 0.9:1 to 1.1:1 and at least 50% of the total amine functionality is acylated in the presence of C 2 through C 8 containing aliphatic acids or C 4 to C 16 containing aliphatic anhydrides.

Claim 16

A continuous process for the preparation of random linear injection moldable amide-imide and amide copolymers having an inherent viscosity of about 0.6 to 3.0 which continuous process comprises reacting fully or partially acylated aromatic diamines with aromatic tricarboxylic acid anhydrides, aromatic dicarboxylic acids, or mixtures of aromatic dicarboxylic acids and aromatic tricarboxylic acid anhydrides in a molar ratio of about 9:1 to 1:9 at a temperature of about 150° to 750° F. and wherein the molar ratio of the diamines to the anhydride or acid, or acid and anhydride mixture is 0.9:1 to 1.1:1 and at least 50% of the total amine functionality is acylated in the presence of C 2 through C 8 containing aliphatic acids or C 4 to C 16 containing aliphatic anhydrides.

Claim 17

The process of claim 14 wherein the aromatic dicarboxylic acid is isophthalic acid.

Claim 18

The process of claim 14 wherein the tricarboxylic acid anhydride compound is trimellitic anhydride.

Claim 19

The process of claim 14 wherein about 70 to 100 percent of the aromatic diamine is acylated.

Claim 20

The process of claim 14 wherein the acylated diamines are prepared from oxybisaniline and metaphenylene diamine.

Claim 21

The process of claim 18 wherein the molar ratio of the oxybisaniline to the metaphenylene diamine is in the range of about 8:2 to about 2:8.

Claim 22

An injection moldable random linear polyamide copolymer prepared according to the process of claim 1 and comprising units of ##STR10## wherein R comprises R 1 or a mixture of R 1 and R 2 , R 1 and R 2 are divalent aromatic hydrocarbon radicals of from 6 to about 20 carbon atoms or two divalent hydrocarbon radicals of from 6 to 20 carbon atoms joined directly or by stable linkages selected from the group consisting of --O--, methylene, --CO--, --SO 2 -- and --S-- radicals, and said R 1 and R 2 containing units run from about 10 mole percent R 1 containing units and 90 mole percent R 2 containing units to about 10 mole percent R 2 containing units and X is a divalent aromatic radical.

Claim 23

The polyamide copolymer of claim 20 wherein R comprises ##STR11##

Claim 24

The polyamide copolymer of claim 21 wherein X is a mixture of terephthalic and isophthalic acids.

Claim 25

The polyamide copolymer of claim 22 wherein the molar ratio of terephthalic and isophthalic acids is in the range of 6:4 to about 4:6.

Claim 26

The copolymer produced according to claim 1 wherein the copolymer is in the form of a molded object.

Claim 27

The copolymer produced according to claim 11 wherein the copolymer is in the form of a molded object.

Claim 28

The copolymer produced according to claim 12 wherein the copolymer is in the form of a molded object.

Claim 29

The copolymer produced according to claim 14 wherein the copolymer is in the form of a molded object.

Claim 30

The copolymer produced according to claim 19 wherein the copolymer is in the form of a molded object.

Claim 31

The copolymer produced according to claim 20 wherein the copolymer is in the form of a molded object.

Claim 32

The copolymer produced according to claim 23 wherein the copolymer is in the form of a molded object.

Claim 33

The composition of claim 30 wherein the molded object contains from about 20 to 60 weight percent of glass fibers, glass beads, mineral fillers or a mixture thereof.

Claim 34

The process of claim 1, wherein the aliphatic anhydride is acetic anhydride.

Claim 35

The process of claim 14, wherein the aliphatic anhydride is acetic anhydride.