US3950308A
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Crosslinked polymers containing siloxane groups
Assignee: Novartis Corp
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Filing: 1974-05-24
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Granted: 1976-04-13
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Expires: 1994-05-24
Abstract
Abstract New crosslinked polyamides, polyimides and polyamide-imides, containing siloxane groups, are described, which are obtainable by heating silicon-modified polyamide, polyamide-acid and polyamide-amide-acid prepolymers in the presence of silanediols or siloxanediols to temperatures between 50° and 350°C. The crosslinked polymers, containing siloxane groups, according to the invention are distinguished by good mechanical, thermal and electrical properties.
Inventors
- 👤 Gerd Greber
- 👤 Roland Darms
- 👤 Dieter Lohmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:09
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/42; C08G73/00; C08G73/06; C08G73/10; C08G73/1057; C08G73/106
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
249 words
Crosslinked polyamides, polyimides or polyamide-imides containing siloxane groups and having a silicon content of 0.2 to 38.0% by weight, which are obtainable by heating a silicon-modified polyamide, polyamide-acid or polyamide-amide-acid monomer or prepolymer having an inherent viscosity of 0.04 to 4.0, of the formula I ##EQU22## wherein X represents a structural element of the formula II ##EQU23## a denotes a number from 0 to 100, and the individual m, R 1 , R 2 , R 3 , Q and Y independently of one another denote the following: m denotes the number 1 or 2, R 1 denotes a radical --CH 2 --, ##SPC8## or ##SPC9## with x denoting a number from 1 to 4, R 2 denotes a carbocyclic-aromatic or heterocyclic radical, wherein the cabonamide and carboxyl groups are bonded to different ring carbon atoms and the carboxyl groups are each in the ortho-position to a carbonamide group, R 3 denotes an aliphatic radical with at least 2 carbon atoms, or a cycloaliphatic, araliphatic, carbocyclic-aromatic or heterocyclic radical, Q denotes methyl, phenyl or a -OY radical, with Y having the meaning indicated below, and Y denotes an alkyl radical with 1 to 6 carbon atoms or a phenyl radical, or corresponding cyclised derivatives, in the presence of a compound or a mixture of compounds of the formula VI ##EQU24## wherein Z 1 and Z 2 independently of one another denote methyl or phenyl and q denotes a number from 0 to 1,000, to temperatures between 50° and 350°C.
Claim 2
Dependent Claim
249 words
Crosslinked polyamides, polyimides or polyamide-imides containing siloxane groups and having a silicon content of 0.2 to 38.0% by weight, which are obtainable by heating a silicon-modified polyamide, polyamide-acid or polyamide-amide-acid monomer or prepolymer having an inherent viscosity of 0.04 to 4.0, of the formula I ##EQU22## wherein X represents a structural element of the formula II ##EQU23## a denotes a number from 0 to 100, and the individual m, R 1 , R 2 , R 3 , Q and Y independently of one another denote the following: m denotes the number 1 or 2, R 1 denotes a radical --CH 2 --, ##SPC8## or ##SPC9## with x denoting a number from 1 to 4, R 2 denotes a carbocyclic-aromatic or heterocyclic radical, wherein the cabonamide and carboxyl groups are bonded to different ring carbon atoms and the carboxyl groups are each in the ortho-position to a carbonamide group, R 3 denotes an aliphatic radical with at least 2 carbon atoms, or a cycloaliphatic, araliphatic, carbocyclic-aromatic or heterocyclic radical, Q denotes methyl, phenyl or a -OY radical, with Y having the meaning indicated below, and Y denotes an alkyl radical with 1 to 6 carbon atoms or a phenyl radical, or corresponding cyclised derivatives, in the presence of a compound or a mixture of compounds of the formula VI ##EQU24## wherein Z 1 and Z 2 independently of one another denote methyl or phenyl and q denotes a number from 0 to 1,000, to temperatures between 50° and 350°C.
Claim 3
Dependent Claim
23 words
Crosslinked polyamides, polyimides or polyamide-imides containing siloxane groups, according to claim 1, which are obtainable by heating to temperatures between 15° and 225°C.
Claim 4
Dependent Claim
41 words
Crosslinked polyamides, polyimides or polyamide-imides containing siloxane groups, according to claim 1, which are obtainable by using a compound of the formula VI, wherein Z 1 and Z 2 each denote methyl and q denotes a number from 1 to 200.
Claim 5
Dependent Claim
25 words
Crosslinked polyamides, polyimides or polyamide-imides containing siloxane groups, according to claim 1, which are obtainable by using diphenylsilanediol as the compound of the formula VI.
Claim 6
Dependent Claim
134 words
Crosslinked polyamides, polyimides or polyamide-imies containing siloxane groups, according to claim 1, which are obtainable by using a silicon-modified monomer or prepolymer of the formula I, wherein the individual R 2 independently of one another represent an unsubstituted monocyclic, fused polycyclic or non-fused bicyclic aromatic radical, the aromatic nuclei, in the latter case, being bonded to one another via the bridge member --O-- or --CO--, the individual R 3 independently of one another represent a monocyclic or non-fused bicyclic aromatic radical which is optionally substituted by halogen atoms or alkyl or alkoxy groups with 1-4 carbon atoms each, an unsubstituted monocyclic araliphatic radical or an unsubstituted aliphatic radical with 2-10 carbon atoms, and what has been stated in claim 1 applies to a, m, R 1 , Q and Y, or corresponding cyclised derivatives.
Claim 7
Dependent Claim
93 words
Crosslinked polyamides, polyimides or polyamide-imides containing siloxane groups, according to claim 1, which are obtainable by using a silicon-modified monomer or prepolymer of the formula I, wherein R 2 represents the 1,4- or 1,3-phenylene radical, a benzene ring or the benzophenone ring system and R 3 represents the 1,4- or 1,3-phenylene radical, the 4,4'-diphenyl-ether radical or 4,4'-diphenylylmethane radical, but of R 2 and R 3 only one denotes a 1,4-phenylene radical, and what has been stated in claim 1 applies to a, m, R 1 , Q and Y, or corresponding cyclised derivaties.
Claim 8
Dependent Claim
70 words
Crosslinked polyamides, polyimides or polyamide-imides containing siloxane groups, according to claim 1, which are obtainable by using silicon-modified prepolymers of the formula I, wherein, if a ≧ 1, the individual R 2 and R 3 have the same meaning, m is the same for each radical R 2 , and what has been stated in claim 1 applies to R 1 , Q and Y, or the corresponding cyclised derivatives.
Claim 9
Dependent Claim
107 words
Crosslinked polyamide-imides contaning siloxane groups, according to claim 1, which are obtainable by using silicon-modified prepolymers of the formula I, wherein X represents a structural element of the formula IIb ##EQU25## in which a 1 denotes a number from 1 to 99 and the two R 2 ' each represent a benzene ring, with the carbonamide and carboxyl groups being bonded to different ring carbon atoms and the carboxyl groups each being in the ortho-position to the --CO--NH--R 1 -- grouping, and the individual R 1 , R 2 , R 3 , Q and Y are identical, or corresponding derivatives with cyclised terminal carboxylic acid groups.
Claim 10
Dependent Claim
108 words
Crosslinked polyamide-imides containing siloxane groups, according to claim 1, which are obtainable by using silicon-modified prepolymers of the formula I, wherein X represents a structural element of the formula IIc ##EQU26## in which a 1 denotes a number from 1 to 99 and the two R 2 " each denote a benzene ring, with the carbonamide groups and carboxyl groups being bonded to different ring carbon atoms and the carboxyl groups being each in the ortho-position to the --CO--NH--R 3 -- grouping, and the individual R 1 , R 2 , R 3 , Q and Y are identical, or corresponding derivatives with cyclised terminal carboxylic acid groups.
Claim 11
Dependent Claim
119 words
Crosslinked polyamide-imides containing siloxane groups, according to claim 8, which are obtainable by using silicon-modified prepolymers of the formula I, wherein R 1 in each case denotes a --CH 2 --, ##SPC10## radical, the individual R 2 and R 3 are identical and one of R 2 and R 3 represents the 1,4-phenylene radical and the other the 1,3-phenylene radical or R 2 and R 3 each represent the 1,3-phenylene radical, Q represents the methyl group and Y represents a propyl group or Q represents the ethoxy group and Y represents the ethyl group and what has been stated under claim 8 applies to a 1 and R 2 ', or corresponding derivatives with cyclised terminal carboxylic acid groups.
Claim 12
Dependent Claim
116 words
Crosslinked polyamides containing siloxane groups, according to claim 1, which are obtainable by using a silicon-modified monomer or prepolymer of the formula I, wherein m in each case denotes the number 1, R 1 in each case represents a --CH 2 -- ##SPC11## radical, the individual R 2 and R 3 are identical and one of R 2 and R 3 represents the 1,4-phenylene radical and the other the 1,3-phenylene radical or R 2 and R 3 each represent the 1,3-phenylene radical, Q represents the methyl group and Y represents a propyl group or Q represents the ethoxy group and Y represents the ethyl group and what has been stated in claim 1 applies to a.
Claim 13
Dependent Claim
108 words
Crosslinked polyimides containing siloxane groups, according to claim 1, which are obtainable by using a silicon-modified monomer or prepolymer of the formula I, wherein m in each case denotes the number 2, R 1 in each case represents a --CH 2 --, ##SPC12## radical, R 2 in each case denotes a benzene ring or the benzophenone ring system, R 3 in each case denotes the 4,4'-diphenylyl-ether or the 4,4'-diphenylylmethane radical, Q denotes the methyl group and Y denotes a propyl group or Q denotes the ethoxy group and Y denotes the ethyl group and what has been stated in claim 1 applies to a, or corresponding cyclised derivatives.
Claim 14
Dependent Claim
108 words
Crosslinked polyamide-imides containing siloxane groups, according to claim 1, which are obtainable by using a silicon-modified monomer or prepolymer of the formula I, wherein X represents a structural element of the formula IId ##EQU27## in which R 1 in each case represents a --CH 2 --, ##SPC13## radical, R 2 in each case denotes a benzene ring and R 3 in each case denotes the 4,4'-diphenylyl-ether or the 4,4'-diphenylylmethane radical, Q denotes the methyl group and Y denotes a propyl group or Q denotes the ethoxy group and Y denotes the ethyl group, and what has been stated in claim 1 applies to a, or corresponding cyclised derivatives.
Claim 15
Dependent Claim
119 words
Crosslinked polyamide-imides containing siloxane groups, according to claim 9, which are obtainable by using silicon-modified prepolymers of the formula I, wherein R 1 in each case represents a --CH 2 --, ##SPC14## radical, the individual R 2 and R 3 are respectively identical and one of R 2 and R 3 denotes the 1,4-phenylene radical and the other the 1,3-phenylene radical, or R 2 and R 3 each denote the 1,3-phenylene radical, Q denotes the methyl group and Y denotes a propyl group or Q denotes the ethoxy group and Y denotes the ethyl group and what has been stated in claim 9 applies to a 1 and R 2 ", corresponding derivatives with cyclised terminal carboxylic acid groups.
References Cited (Backward Citations)
US3288754A
Cited
US3779990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |