Patent US6024420A successfully refreshed from Google Patents.
US4476280A
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Polyamide compositions from mixtures of trimethylhexamethylene diamine, hexamethylene diamine and diacids
Assignee: BP Corp North America Inc
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Filing: 1983-02-16
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Granted: 1984-10-09
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Expires: 2003-02-16
Abstract
Abstract Novel crystalline copolymers having heat deflection temperatures in excess of 305° C. and prepared from hexamethylene diamine, trimethylhexamethylene diamine and either mixtures of terephthalic acid and adipic acid or mixtures of terephthalic acid, isophthalic acid and adipic acid. The high heat deflection of these polyamides enables them to be used in applications such as a hood for an automobile, a shroud for a lawn mower, chain saw guards and in electrical connection applications.
Inventors
- 👤 Wassily Poppe
- 👤 Yu-Tsai Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:50
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
116 words
A crystalline moldable polyamide copolymer composition comprising the following recurring moieties: ##STR3## wherein R is a mixture of a straight chain aliphatic hydrocarbon radical comprising six carbon atoms and a trimethyl substituted saturated hydrocarbon radical, six carbon atoms in length, with two of the three methyl groups on the same carbon atom wherein the mole ratio of the two hydrocarbon radicals is about 55/45 to about 95/5 and wherein the mole ratio of the two hydrocarbon radicals is about 55/45 to about 95/5 and wherein the mole ratio of A/C or A/to a mixture of B and C is about 61/39 to 95/5, and the mole ratio of B to C is about 38/1 to 1/38.
Claim 2
Dependent Claim
116 words
A crystalline moldable polyamide copolymer composition comprising the following recurring moieties: ##STR3## wherein R is a mixture of a straight chain aliphatic hydrocarbon radical comprising six carbon atoms and a trimethyl substituted saturated hydrocarbon radical, six carbon atoms in length, with two of the three methyl groups on the same carbon atom wherein the mole ratio of the two hydrocarbon radicals is about 55/45 to about 95/5 and wherein the mole ratio of the two hydrocarbon radicals is about 55/45 to about 95/5 and wherein the mole ratio of A/C or A/to a mixture of B and C is about 61/39 to 95/5, and the mole ratio of B to C is about 38/1 to 1/38.
Claim 3
Dependent Claim
32 words
The composition of claim 1 wherein the ratio of the straight chain hydrocarbon radical to the trialkyl substituted hydrocarbon radical is about 55 to about 45 to about 80 to about 20.
Claim 4
Dependent Claim
27 words
The composition of claim 2 wherein the straight chain hydrocarbon radical is hexamethylene and the trialkyl substituted hydrocarbon radical is 2,2,4-trimethylhexamethylene, 2,4,4-trimethylhexamethylene or a mixture of both.
Claim 5
Dependent Claim
6 words
A fiber composition of claim 1.
Claim 6
Dependent Claim
6 words
A fiber composition of claim 3.
Claim 7
Dependent Claim
12 words
The fiber of claim 5 wherein the fiber is an oriented fiber.
Claim 8
Dependent Claim
12 words
The fiber of claim 5 wherein the fiber is a drawn fiber.
Claim 9
Dependent Claim
8 words
A laminate of the composition of claim 1.
Claim 10
Dependent Claim
75 words
A crystalline moldable polyamide copolymer comprising the following recurring moieties: ##STR4## wherein R is a mixture of an aliphatic hydrocarbon radical comprising six carbon atoms and a trimethyl substituted saturated hydrocarbon radical, six carbon atoms in length, with two of the three methyl groups on the same carbon atom wherein the weight ratio of the two radicals is about 55/45 to about 95/5 and wherein the weight ratio of I:II is about 61/39 to 95/5.
Claim 11
Dependent Claim
75 words
A crystalline moldable polyamide copolymer comprising the following recurring moieties: ##STR4## wherein R is a mixture of an aliphatic hydrocarbon radical comprising six carbon atoms and a trimethyl substituted saturated hydrocarbon radical, six carbon atoms in length, with two of the three methyl groups on the same carbon atom wherein the weight ratio of the two radicals is about 55/45 to about 95/5 and wherein the weight ratio of I:II is about 61/39 to 95/5.
Claim 12
Dependent Claim
33 words
The polyamide copolymer of claim 9 wherein the ratio of the straight chain hydrocarbon radical to the trimethyl substituted hydrocarbon radical is about 55 to about 45 to about 80 to about 20.
Claim 13
Dependent Claim
28 words
The polyamide copolymer of claim 10 wherein the straight chain hydrocarbon radical is hexamethylene and the trimethyl substituted hydrocarbon radical is 2,2,4-trimethylhexamethylene, 2,4,4-trimethylhexamethylene or a mixture of both.
Claim 14
Dependent Claim
8 words
A fiber of the copolymer of claim 9.
Claim 15
Dependent Claim
12 words
The fiber of claim 12 wherein the fiber is an oriented fiber.
Claim 16
Dependent Claim
12 words
The fiber of claim 12 wherein the fiber is a drawn fiber.
Claim 17
Dependent Claim
8 words
A laminate of the copolymer of claim 9.
Claim 18
Dependent Claim
117 words
A crystalline polyamide copolymer molding composition comprising the following recurring moieties: ##STR5## wherein R is a mixture of a straight chain aliphatic hydrocarbon radical comprising six carbon atoms and a trimethyl substituted saturated hydrocarbon radical, six carbon atoms in length, with two of the three methyl groups on the same carbon atom wherein the mole ratio of the two hydrocarbon radicals is about 55/45 to about 95/5 and wherein the mole ratio of the two hydrocarbon radicals is about 55/45 to about 95/5 and wherein the mole ratio of A/C or A/to a mixture of B and C is about 61/39 to 95/5, and the mole ratio of B to C is about 38/1 to about 1/38.
Claim 19
Dependent Claim
117 words
A crystalline polyamide copolymer molding composition comprising the following recurring moieties: ##STR5## wherein R is a mixture of a straight chain aliphatic hydrocarbon radical comprising six carbon atoms and a trimethyl substituted saturated hydrocarbon radical, six carbon atoms in length, with two of the three methyl groups on the same carbon atom wherein the mole ratio of the two hydrocarbon radicals is about 55/45 to about 95/5 and wherein the mole ratio of the two hydrocarbon radicals is about 55/45 to about 95/5 and wherein the mole ratio of A/C or A/to a mixture of B and C is about 61/39 to 95/5, and the mole ratio of B to C is about 38/1 to about 1/38.
Claim 20
Dependent Claim
25 words
The composition of claim 16 comprising about 10 to about 60 percent of glass fibers, glass beads, mineral fibers, graphite fibers or mixtures of same.
Claim 21
Dependent Claim
25 words
The composition of claim 16 comprising about 40 to about 60 percent of glass fibers, glass beads, mineral fibers, graphite fibers or mixtures of same.
Claim 22
Dependent Claim
35 words
The polyamide copolymer molding composition of claim 16 wherein the ratio of the straight chain hydrocarbon radical to the trimethyl substituted hydrocarbon radical is about 55 to about 45 to about 80 to about 20.
Claim 23
Dependent Claim
30 words
The polyamide copolymer molding composition of claim 19 wherein the straight chain hydrocarbon radical is hexamethylene and the trimethyl substituted hydrocarbon radical is 2,2,4-trimethylhexamethylene, 2,4,4-trimethylhexamethylene or a mixture of same.
Claim 24
Dependent Claim
26 words
The composition of claim 20 comprising about 10 to about 60 percent of glass fibers, glass beads, mineral fibers, graphite fibers or a mixture of same.
Claim 25
Dependent Claim
40 words
The composition of claim 20 comprising about 40 to about 60 percent of glass fibers, glass beads, mineral fibers, graphite fibers or a mixture of same and wherein the copolymer has a heat deflection temperature in excess of 304° C.
Claim 26
Dependent Claim
78 words
A polyamide copolymer molding composition comprising the following recurring moieties: ##STR6## wherein R is a mixture of a straight chain aliphatic hydrocarbon radical comprising six carbon atoms and a trimethyl substituted saturated hydrocarbon radical, six carbon atoms in length, with two of the three methyl groups on the same carbon atom wherein the weight ratio of the two hydrocarbon radicals is about 55/45 to about 95/5 and wherein the weight ratio of I:II is about 61/39 to 95/5.
Claim 27
Dependent Claim
78 words
A polyamide copolymer molding composition comprising the following recurring moieties: ##STR6## wherein R is a mixture of a straight chain aliphatic hydrocarbon radical comprising six carbon atoms and a trimethyl substituted saturated hydrocarbon radical, six carbon atoms in length, with two of the three methyl groups on the same carbon atom wherein the weight ratio of the two hydrocarbon radicals is about 55/45 to about 95/5 and wherein the weight ratio of I:II is about 61/39 to 95/5.
Claim 28
Dependent Claim
25 words
The composition of claim 23 comprising about 10 to about 60 percent of glass fibers, glass beads, mineral fibers, graphite fibers or mixturs of same.
Claim 29
Dependent Claim
25 words
The composition of claim 23 comprising about 40 to about 60 percent of glass fibers, glass beads, mineral fibers, graphite fibers or mixtures of same.
Claim 30
Dependent Claim
35 words
The polyamide copolymer molding composition of claim 23 wherein the ratio of the straight chain hydrocarbon radical to the methyl substituted hydrocarbon radical is about 55 to about 45 to about 80 to about 20.
Claim 31
Dependent Claim
29 words
The polyamide molding composition of claim 26 wherein the straight chain hydrocarbon radical is hexamethylene and the trimethyl substituted hydrocarbon radical is 2,2,4-trimethylhexamethylene, 2,4,4-trimethylhexamethylene or a mixture of same.
Claim 32
Dependent Claim
26 words
The composition of claim 27 comprising about 10 to about 60 percent of glass fibers, glass beads, mineral fibers, graphite fibers or a mixture of same.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |