US4558110A
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Crystalline silicone-imide copolymers
Assignee: General Electric Co
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Filing: 1985-02-01
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Granted: 1985-12-10
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Expires: 2005-02-01
Abstract
Abstract There is provided a crystalline silicone-imide block copolymer comprising at least one imide-disiloxane block, wherein the imide portion of said imide-disiloxane block has a symmetrical aromatic radical as its nucleus, and at least one polydiorganosiloxane has at least about five siloxy units.
Inventors
- 👤 Chung J. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:45
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/452; C08G77/455
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
44 words
A crystalline silicone-imide copolymer composition comprising at least one imide-disiloxane block, wherein the imide portion of said imide-disiloxane block contains a symmetrical aromatic radical as its nucleus, and at least one polydiorganosiloxane block wherein said polydiorganosiloxane block has at least about five siloxy units.
Claim 2
Dependent Claim
44 words
A crystalline silicone-imide copolymer composition comprising at least one imide-disiloxane block, wherein the imide portion of said imide-disiloxane block contains a symmetrical aromatic radical as its nucleus, and at least one polydiorganosiloxane block wherein said polydiorganosiloxane block has at least about five siloxy units.
Claim 3
Dependent Claim
59 words
The composition of claim 1, wherein the imide-disiloxane block has the formula ##STR22## where Ar is a symmetrical substituted or unsubstituted aromatic radical; R is an independently selected divalent substituted or unsubstituted alkylene or arylene radical; R 1 is an independently selected monovalent substituted or unsubstituted hydrocarbon radical, and a is an integer equal to or greater than 1.
Claim 4
Dependent Claim
59 words
The composition of claim 1, wherein the polydiorganosiloxane block has the formula ##STR23## where R is a divalent substituted or unsubstituted alkylene or arylene radical; R 1 is an independently selected monovalent substituted or unsubstituted hydrocarbon radical, n is an integer equal to or greater than about 5, and b is an integer equal to or greater than 1.
Claim 5
Dependent Claim
92 words
A crystalline silicone-imide copolymer composition comprising at least one structural unit of the formula ##STR24## where Ar is a symmetrical substituted or unsubstituted aromatic radical; R is an independently selected divalent substituted or unsubstituted alkylene or arylene radical; R 1 is an independently selected monovalent substituted or unsubstituted hydrocarbon radical; n is an integer equal to or greater than about 5; a and b are positive integers wherein the ratio of a units to b units is such that the crystallinity of the composition is maintained; and c is at least 1.
Claim 6
Dependent Claim
92 words
A crystalline silicone-imide copolymer composition comprising at least one structural unit of the formula ##STR24## where Ar is a symmetrical substituted or unsubstituted aromatic radical; R is an independently selected divalent substituted or unsubstituted alkylene or arylene radical; R 1 is an independently selected monovalent substituted or unsubstituted hydrocarbon radical; n is an integer equal to or greater than about 5; a and b are positive integers wherein the ratio of a units to b units is such that the crystallinity of the composition is maintained; and c is at least 1.
Claim 7
Dependent Claim
18 words
The composition of claim 4, wherein Ar is selected from the group consisting of phenyl, naphthyl and anthracyl.
Claim 8
Dependent Claim
23 words
The composition of claim 4, wherein R is a radical of the formula ##STR25## where n is an integer from 1 to 10.
Claim 9
Dependent Claim
14 words
The composition of claim 6, wherein n is an integer from 1 to 5.
Claim 10
Dependent Claim
14 words
The composition of claim 6, wherein n is an integer from 1 to 3.
Claim 11
Dependent Claim
19 words
The composition of claim 4, wherein R 1 is a methyl radical, a phenyl radical or a mixture thereof.
Claim 12
Dependent Claim
12 words
The composition of claim 9, wherein R 1 is a methyl radical.
Claim 13
Dependent Claim
16 words
The composition of claim 4 wherein a is an integer ranging from 1 to about 100.
Claim 14
Dependent Claim
17 words
The composition of claim 4, wherein a is an integer ranging from about 3 to about 40.
Claim 15
Dependent Claim
17 words
The composition of claim 4, wherein a is an integer ranging from about 10 to about 20.
Claim 16
Dependent Claim
16 words
The composition of claim 4, wherein b is an integer ranging from 1 to about 100.
Claim 17
Dependent Claim
16 words
The composition of claim 4, wherein b is an integer ranging from 1 to about 40.
Claim 18
Dependent Claim
17 words
The composition of claim 4, wherein b is an integer ranging from about 5 to about 10.
Claim 19
Dependent Claim
14 words
The composition of claim 4, wherein c is an integer greater than about 5.
Claim 20
Dependent Claim
14 words
The composition of claim 4, wherein c is an integer greater than about 10.
Claim 21
Dependent Claim
18 words
The composition of claim 4, wherein the T m is from about 100° C. to about 330° C.
Claim 22
Dependent Claim
17 words
The composition of claim 4, wherein T m is from about 150° C. to about 250° C.
Claim 23
Dependent Claim
11 words
The composition of claim 20, wherein Tg is below 0° C.
Claim 24
Dependent Claim
69 words
The composition of claim 4, further comprising at least one polymeric block having the formula ##STR26## where Ar 2 is a divalent aromatic radical, R 2 is a radical selected from the group consisting of ##STR27## where R 4 is an alkyl radical having from 1 to 9 carbon atoms, R 5 is an alkyl radical having from 1 to 4 carbon atoms, and Y is oxygen or sulfur.
Claim 25
Independent Claim
53 words
A method for making a crystalline silicone-imide copolymer composition, comprising: I. reacting in a suitable solvent or mixture of solvents: (a) at least one bis-amino-terminated disiloxane with (b) at least one dianhydride having a symmetrical aromatic radical as its nucleus, and (c) at least one polydiorganosiloxane having at least about five siloxy unit.
Claim 26
Independent Claim
53 words
A method for making a crystalline silicone-imide copolymer composition, comprising: I. reacting in a suitable solvent or mixture of solvents: (a) at least one bis-amino-terminated disiloxane with (b) at least one dianhydride having a symmetrical aromatic radical as its nucleus, and (c) at least one polydiorganosiloxane having at least about five siloxy unit.
Claim 27
Dependent Claim
32 words
The method of claim 23, wherein the bis-amino-terminated disiloxane, dianhydride having a symmetrical aromatic radical as its nucleus, and polydiorganosiloxane having at least five siloxy units are reacted with one another concurrently.
Claim 28
Dependent Claim
39 words
The method of claim 23, wherein the bis-amino-terminated disiloxane is reacted with the dianhydride having a symmetrical aromatic radical as its nucleus, and thereafter, the reaction product is further reacted with the polydiorganosiloxane having at least five siloxy units.
Claim 29
Dependent Claim
14 words
The method of claim 23, further comprising removing the solvent or mixture of solvents.
Claim 30
Dependent Claim
22 words
The method of claim 23, wherein the solvent is o-dichlorobenzene, chloroform, toluene, or benzene or a mixture of N-methyl pyrrolidone and toluene.
Claim 31
Dependent Claim
14 words
The method of claim 23, wherein the silicone-imide copolymer composition is formed in situ.
Claim 32
Dependent Claim
24 words
The method of claim 23, wherein an amide-acid prepolymer is formed and thereafter the silicone-imide copolymer composition is formed by heating said amide-acid prepolymer.
Claim 33
Dependent Claim
45 words
The method of claim 23, wherein the bis-amino-terminated disiloxane has the formula ##STR28## where R is a divalent substituted or unsubstituted alkylene or arylene radical; R 1 is an independently selected monovalent substituted or unsubstituted hydrocarbon radical; and x is equal to 0 or 1.
Claim 34
Dependent Claim
23 words
The method of claim 30, wherein R is a radical of the formula ##STR29## where n is an integer from 0 to 10.
Claim 35
Dependent Claim
14 words
The method of claim 31, wherein n is an integer from 1 to 5.
Claim 36
Dependent Claim
25 words
The method of claim 23, wherein the symmetrical aromatic radical nucleus of the dianhydride is selected from the group consisting of phenyl, naphthyl and anthracyl.
Claim 37
Dependent Claim
41 words
The method of claim 23, wherein per mole dianhydride having a symmetrical aomatic radical as its nucleus, there is utilized at least about 0.50 mole bis-amino-terminated disiloxane and less than about 0.50 mole polydiorganosiloxane having at least about five siloxy units.
Claim 38
Dependent Claim
41 words
The method of claim 23, wherein per mole dianhydride having a symmetrical aromatic radical as its nucleus, there is utilized at least about 0.70 mole bis-amino-terminated disiloxane and less than about 0.30 mole polydiorganosiloxane having at least about five siloxy units.
Claim 39
Dependent Claim
11 words
The method of claim 23 wherein the bis-amino-terminated disiloxane is symmetrical.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-09 | 1989-06-10 | 1989-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-09 | 1993-06-10 | 1993-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-09 | 1997-06-10 | 1997-12-10 | $7700.00 | Window Closed / Lapsed |