US4600617A — Continuous fiber inserts for injection molded par…

Claim 1

Independent Claim 300 words

A molded object comprising the following structure: ##STR4## and units of: ##STR5## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are different and are divalent aromatic hydrocarbon radicals of from 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from 6 to about 10 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 coated with continuous graphite fiber or woven graphite fabric or graphite unidirectional tape impregnated with a polyamide-imide of the following structure: ##STR6## and units of: ##STR7## wherein the free carboxyl groups are ortho to one amide group, Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are the same or are different and are divalent aromatic hydrocarbon radicals of from 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from 6 to about 10 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 2

Dependent Claim 300 words

A molded object comprising the following structure: ##STR4## and units of: ##STR5## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are different and are divalent aromatic hydrocarbon radicals of from 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from 6 to about 10 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 coated with continuous graphite fiber or woven graphite fabric or graphite unidirectional tape impregnated with a polyamide-imide of the following structure: ##STR6## and units of: ##STR7## wherein the free carboxyl groups are ortho to one amide group, Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are the same or are different and are divalent aromatic hydrocarbon radicals of from 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from 6 to about 10 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 3

Dependent Claim 47 words

The molded object of claim 1 wherein, in both the molded object and the polyamide-imide impregnated continuous graphite fiber, or woven graphite fabric or graphite unidirectional tape, R 1 is: ##STR8## and R 2 is: ##STR9## or wherein R 1 is: ##STR10## and R 2 is: ##STR11##

Claim 4

Dependent Claim 84 words

The molded object of claim 1, wherein in both the molded object and the graphite woven polyamide-imide coated fabric, Z is a trivalent benzene ring, R 1 is: ##STR12## and R 2 is: ##STR13## and wherein the concentration range runs from about 30 mole percent of the R 1 containing units and about 70 mole percent of the R 2 containing units to about 70 mole percent of the R 1 containing units and about 30 mole percent of the R 2 containing units.

Claim 5

Dependent Claim 296 words

A molded object comprising the following structure: ##STR14## and units of: ##STR15## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are different and are divalent aromatic hydrocarbon radicals of from 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from 6 to about 10 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 coated with a graphite fabric impregnated with a polyamide-imide of the following structure: ##STR16## and units of: ##STR17## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are different and are divalent aromatic hydrocarbon radicals of from 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from 6 to about 10 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 6

Dependent Claim 296 words

A molded object comprising the following structure: ##STR14## and units of: ##STR15## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are different and are divalent aromatic hydrocarbon radicals of from 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from 6 to about 10 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 coated with a graphite fabric impregnated with a polyamide-imide of the following structure: ##STR16## and units of: ##STR17## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are different and are divalent aromatic hydrocarbon radicals of from 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from 6 to about 10 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 7

Dependent Claim 39 words

The molded object of claim 4 wherein, in both the molded object and the graphite woven polyamide-imide coated fabric, R 1 is: ##STR18## and R 2 is: ##STR19## or wherein R 1 is: ##STR20## and R 2 is: ##STR21##

Claim 8

Dependent Claim 84 words

The molded object of claim 4 wherein, in both the molded object and the graphite woven polyamide-imide coated fabric, Z is a trivalent benzene ring, R 1 is: ##STR22## and R 2 is: ##STR23## and wherein the concentration range runs from about 30 mole percent of the R 1 containing units and about 70 mole percent of the R 2 containing units to about 70 mole percent of the R 1 containing units and about 30 mole percent of the R 2 containing units.

Claim 9

Dependent Claim 210 words

A process for injection molding continuous woven graphite fibers or graphite woven fabrics or graphite unidirectional tape impregnated with a polyamide-imide of claim 1 on the surface of polyamide-imides of the following structures: ##STR24## and units of: ##STR25## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are different and are divalent aromatic hydrocarbon radicals of from 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from 6 to about 10 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, which process comprises injecting into the mold cavity the impregnated fabric and then injection molding the polyamide-imide copolymer at a temperature of about 630° to about 680° F. at a back pressure of about 50 to about 5000 psi.

Claim 10

Dependent Claim 38 words

The process of claim 7 wherein, in both the molded object and the graphite woven polyamide-imide coated fabric, R 1 is: ##STR26## and R 2 is: ##STR27## or wherein R 1 is: ##STR28## and R 2 is: ##STR29##

Claim 11

Dependent Claim 83 words

The process of claim 7 wherein, in both the molded object and the graphite woven polyamide-imide coated fabric, Z is a trivalent benzene ring, R 1 is: ##STR30## and R 2 is: ##STR31## and wherein the concentration range runs from about 30 mole percent of the R 1 containing units and about 70 mole percent of the R 2 containing units to about 70 mole percent of the R 1 containing units and about 30 mole percent of the R 2 containing units.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1989-07-14	1990-01-13	1990-07-15	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1993-07-14	1994-01-13	1994-07-15	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1997-07-14	1998-01-13	1998-07-15	$7700.00	Window Closed / Lapsed

Continuous fiber inserts for injection molded parts

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