US4384071A
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US
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Fibers and filled molding compositions from copolyimides and polyimides derived from tetramethylcyclobutane-1,2,3,4-tetracarboxylic dianhydride and diamines
Assignee: BP Corp North America Inc
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Filing: 1981-07-24
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Granted: 1983-05-17
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Expires: 2001-07-24
Abstract
Abstract Novel glass and graphite filled copolyimides and polyimides useful as engineering plastics are prepared. Also fibers and oriented fibers from the copolyimides and polyimides derived from tetramethycyclobutane 1,2,3,4-tetracarboxylic dianhydride and diamines are disclosed.
Inventors
- 👤 Tayseer S. Nimry
- 👤 Ellis K. Fields
- 👤 Edward E. Paschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:25
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08
Claims Analysis
Total Claims: 61
Claim 1
Independent Claim
48 words
A copolyimide molding composition of the following recurring structure: ##STR9## wherein R is a divalent aliphatic or aromatic hydrocarbon radical and R' is a tetravalent aliphatic or aromatic hydrocarbon radical and the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 2
Dependent Claim
48 words
A copolyimide molding composition of the following recurring structure: ##STR9## wherein R is a divalent aliphatic or aromatic hydrocarbon radical and R' is a tetravalent aliphatic or aromatic hydrocarbon radical and the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 3
Dependent Claim
19 words
The molding composition of claim 1 wherein R and R' are aliphatic hydrocarbons from 2 to 18 carbon atoms.
Claim 4
Dependent Claim
19 words
The molding compositions of claim 1 wherein R and R' are aromatic hydrocarbons from 6 to 20 carbon atoms.
Claim 5
Dependent Claim
41 words
The copolyimide molding composition of claim 1 wherein the aromatic hydrocarbon radical contains from 6 to 10 carbon atoms joined directly or by stable linkage selected from the group consisting of --O-- methylene, ##STR10## --SO 2 --, --SO-- and --S-- radicals.
Claim 6
Dependent Claim
38 words
A copolyimide molding composition of the following recurring structure: ##STR11## wherein R is a divalent aliphatic or aromatic hydrocarbon radical and the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 7
Dependent Claim
38 words
A copolyimide molding composition of the following recurring structure: ##STR11## wherein R is a divalent aliphatic or aromatic hydrocarbon radical and the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 8
Dependent Claim
18 words
The molding composition of claim 5 wherein R is an aliphatic hydrocarbon from 2 to 18 carbon atoms.
Claim 9
Dependent Claim
18 words
The molding composition of claim 5 wherein R is an aromatic hydrocarbon from 6 to 20 carbon atoms.
Claim 10
Dependent Claim
41 words
The copolyimide molding composition of claim 5 wherein the aromatic hydrocarbon radical contains from 6 to 10 carbon atoms joined directly or by stable linkage selected from the group consisting of --O--, methylene, ##STR12## --SO 2 --, --SO--, and --S-- radicals.
Claim 11
Dependent Claim
38 words
A copolyimide molding composition of the following recurring structure ##STR13## wherein R is a divalent aliphatic or aromatic hydrocarbon radical and the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 12
Dependent Claim
38 words
A copolyimide molding composition of the following recurring structure ##STR13## wherein R is a divalent aliphatic or aromatic hydrocarbon radical and the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 13
Dependent Claim
18 words
The molding composition of claim 9 wherein R is an aliphatic hydrocarbon from 2 to 18 carbon atoms.
Claim 14
Dependent Claim
18 words
The molding composition of claim 9 wherein R is an aromatic hydrocarbon from 6 to 20 carbon atoms.
Claim 15
Dependent Claim
41 words
The copolyimide molding composition of claim 17 wherein the aromatic hydrocarbon radical contains from 6 to 10 carbon atoms joined directly or by stable linkage selected from the group consisting of --O--, methylene, ##STR14## --SO 2 --, --SO--, and --S-- radicals.
Claim 16
Dependent Claim
38 words
A polyimide molding composition of the following recurring structure: ##STR15## wherein R is a divalent aliphatic or aromatic hydrocarbon radical and the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 17
Dependent Claim
38 words
A polyimide molding composition of the following recurring structure: ##STR15## wherein R is a divalent aliphatic or aromatic hydrocarbon radical and the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 18
Dependent Claim
18 words
The molding composition of claim 13 wherein R is an aliphatic hydrocarbon from 2 to 18 carbon atoms.
Claim 19
Dependent Claim
18 words
The molding composition of claim 13 wherein R is an aromatic hydrocarbon from 6 to 20 carbon atoms.
Claim 20
Dependent Claim
40 words
The molding composition of claim 13 wherein the aromatic hydrocarbon radical contains from 6 to 10 carbon atoms joined directly or by stable linkage selected from the group consisting of --O--, methylene, ##STR16## --SO--, --SO 2 --, and --S-- radicals.
Claim 21
Dependent Claim
28 words
A polyimide molding composition of the following recurring structure: ##STR17## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 22
Dependent Claim
28 words
A polyimide molding composition of the following recurring structure: ##STR17## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 23
Dependent Claim
28 words
A polyimide molding composition of the following recurring structure: ##STR18## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 24
Dependent Claim
28 words
A polyimide molding composition of the following recurring structure: ##STR18## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 25
Dependent Claim
28 words
A polyimide molding composition of the following recurring structure: ##STR19## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 26
Dependent Claim
28 words
A polyimide molding composition of the following recurring structure: ##STR19## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 27
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR20## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 28
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR20## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 29
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR21## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 30
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR21## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 31
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR22## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 32
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR22## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 33
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR23## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 34
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR23## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 35
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR24## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 36
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR24## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 37
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR25## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 38
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR25## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 39
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR26## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 40
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR26## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 41
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR27## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 42
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR27## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 43
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR28## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 44
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR28## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 45
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR29## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 46
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR29## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 47
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR30## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 48
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR30## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 49
Dependent Claim
38 words
A copolyimide molding composition of the following recurring structure: ##STR31## wherein R is a divalent aliphatic or aromatic hydrocarbon radical and the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 50
Dependent Claim
38 words
A copolyimide molding composition of the following recurring structure: ##STR31## wherein R is a divalent aliphatic or aromatic hydrocarbon radical and the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 51
Dependent Claim
17 words
The copolyimide of claim 31 wherein R is an aliphatic hydrocarbon from 2 to 18 carbon atoms.
Claim 52
Dependent Claim
17 words
The copolyimide of claim 31 wherein R is an aromatic hydrocarbon from 6 to 20 carbon atoms.
Claim 53
Dependent Claim
39 words
The copolyimide of claim 31 wherein the aromatic hydrocarbon radical contains from 6 to 10 carbon atoms joined directly or by stable linkage selected from the group consisting of --O--, methylene, ##STR32## --SO--, --SO 2 --, and --S-- radicals.
Claim 54
Dependent Claim
28 words
The copolyimide molding composition of the following recurring structure: ##STR33## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 55
Dependent Claim
28 words
The copolyimide molding composition of the following recurring structure: ##STR33## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 56
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR34## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 57
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR34## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 58
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR35## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 59
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR35## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 60
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR36## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
Claim 61
Dependent Claim
28 words
A copolyimide molding composition of the following recurring structure: ##STR36## wherein the molding composition contains about 30 to 50 weight percent of glass fibers, glass beads or graphite.
References Cited (Backward Citations)
US4014832A
Cited
US4183835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |