US4677186A
Expired / Lapsed
US
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Polyimides and a process for their preparation
Assignee: Olin Microelectronic Chemicals Inc
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Filing: 1986-08-07
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Granted: 1987-06-30
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Expires: 2006-08-07
Abstract
Abstract Homopolyimides and copolyimides which contain structural elements of the formula I ##STR1## in which R 1 and R 2 are halogen, nitro, aryl, aryloxy, alkyl or alkoxy, m is 0 or a number from 1 to 4, n is 0 or a number from 1 to 3 and p is 0, 1 or 2, the free carbonyl groups are bonded in the ortho-position relative to one another and R is a divalent aromatic radical which is substituted by at least one alkyl group or aralkyl group, are autophotocrosslinkable. They are suitable for the production of protective films and photographic relief images.
Inventors
- 👤 Josef Pfeifer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:21
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0387; C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1003; C08G73/1057; C08G73/1067; C08G73/1075; C08G73/1082; C08G73/1085; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/107; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31721
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
121 words
A homopolyimide or copolyimide which contains structural elements of aromatic aminodicarboxylic acids and has an intrinsic viscosity of at least 0.1 dl/g, measured at 25° C. in a solution of 0.5% by weight of polyimide in N-methylpyrrolidone, which contains recurring structural elements of the formula I ##STR43## in which R 1 and R 2 are halogen, nitro, aryl, aryloxy, alkyl or alkoxy, m is 0 or a number from 1 to 4, n is 0 or a number from 1 to 3 and p is 0, 1 or 2, the free carbonyl groups are bonded in the ortho-position relative to one another and R is a divalent aromatic radical which is substituted by at least one alkyl group or aralkyl group.
Claim 2
Dependent Claim
121 words
A homopolyimide or copolyimide which contains structural elements of aromatic aminodicarboxylic acids and has an intrinsic viscosity of at least 0.1 dl/g, measured at 25° C. in a solution of 0.5% by weight of polyimide in N-methylpyrrolidone, which contains recurring structural elements of the formula I ##STR43## in which R 1 and R 2 are halogen, nitro, aryl, aryloxy, alkyl or alkoxy, m is 0 or a number from 1 to 4, n is 0 or a number from 1 to 3 and p is 0, 1 or 2, the free carbonyl groups are bonded in the ortho-position relative to one another and R is a divalent aromatic radical which is substituted by at least one alkyl group or aralkyl group.
Claim 3
Dependent Claim
13 words
A polyimide according to claim 1, wherein m, n and p are 0.
Claim 4
Dependent Claim
18 words
A polyimide according to claim 1, wherein the carbonyl groups are bonded in the 2-, 3- and 6-position.
Claim 5
Dependent Claim
29 words
A polyimide according to claim 1, wherein the aromatic radical R is substituted by an alkyl or aralkyl group in at least one ortho-position relative to the N atom.
Claim 6
Dependent Claim
22 words
A polyimide according to claim 1, wherein the divalent aromatic radical R is substituted by benzyl or C 1 -C 12 -alkyl.
Claim 7
Dependent Claim
14 words
A polyimide according to claim 5, wherein the alkyl is methyl, ethyl or isopropyl.
Claim 8
Dependent Claim
20 words
A polyimide according to claim 1, wherein the aromatic radical R is a phenylene or bisphenylene radical substituted by alkyl.
Claim 9
Dependent Claim
75 words
A polyimide according to claim 7, wherein the radical R has the formula II ##STR44## in which q is 0 or 1, R 3 is a direct bond or a bridge group, R 4 is alkyl with 1 to 4 C atoms and R 5 to R 11 are hydrogen atoms or alkyl with 1 to 4 C atoms, and the free bonds are in the meta- or para-position relative to the R 3 group.
Claim 10
Dependent Claim
34 words
A polyimide according to claim 8, wherein R 3 is a direct bond or, as a bridge member, --S--, --SO--, --SO 2 --, --CO--, --CH 2 --, --O-- or C 2 -C 6 -alkylidene.
Claim 11
Dependent Claim
14 words
A polyimide according to claim 1, which contains structural elements of the formula ##STR45##
Claim 12
Dependent Claim
93 words
A polyimide according to claim 1, which contains (a) 0.1-100 mol % of structural elements of the formula I and (b) 99.9-0 mol % of structural elements of the formula III and/or IIIa ##STR46## in which Z is the tetravalent radical of an aromatic tetracarboxylic acid onto which in each case two carbonyl groups are bonded in the ortho- or peri-position, Z' is the trivalent radical of an aromatic aminocarboxylic acid onto which two carbonyl groups are bonded in the ortho- or peri-position and X is the divalent radical of an organic diamine.
Claim 13
Dependent Claim
25 words
A polyimide according to claim 11, wherein Z has the formula ##STR47## in which the free bonds are in the ortho-position relative to one another.
Claim 14
Dependent Claim
36 words
A polyimide according to claim 11, wherein X is a divalent phenylene or bisphenylene radical which is substituted by C 1 -C 12 -alkyl in at least one ortho-position relative to at least one N atom.
Claim 15
Dependent Claim
38 words
A polyimide according to claim 11, wherein Z' is a radical of the formula ##STR48## in which R 12 is a bridge group of a direct bond, two free bonds being in the ortho-position relative to one another.
Claim 16
Dependent Claim
14 words
A polyimide according to claim 11, wherein X is alkylene, cycloalkylene, aralkylene or arylene.
Claim 17
Dependent Claim
106 words
A process for the preparation of a polyimide with structural elements of the formula I according to claim 1, which comprises subjecting at least one aminodicarboxylic acid of the formula IV ##STR49## by itself or together with at least one aminodicarboxylic acid of the formula V ##STR50## and/or at least one tetracarboxylic acid of the formula VI ##STR51## or polyimide-forming derivatives thereof, and at least one diamine of the formula VII H.sub.2 N--X--NH.sub.2 (VII) in which R, R 1 , R 2 , Z, Z', X, m, n and p are as defined above, to polycondensation and cyclisation in a manner which is known per se.
Claim 18
Dependent Claim
29 words
A coated material, in which a layer of a polyimide according to either of claims 1 and 11 is applied to at least one surface of a carrier material.
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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) | 1990-06-29 | 1990-12-29 | 1991-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-29 | 1994-12-29 | 1995-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-29 | 1998-12-29 | 1999-06-30 | $7700.00 | Window Closed / Lapsed |