US5576398A
Expired / Lapsed
US
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Thermosetting resin composition
Assignee: JSR Corp
•
Filing: 1995-11-21
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Granted: 1996-11-19
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Expires: 2015-11-21
Abstract
Abstract A thermosetting resin composition which comprises (A) a resin in which at least one compound having a graft-reactive group such as a carboxyl group, a primary amino group or a secondary amino group and a carboxylic anhydride group has been grafted on a polycarbodiimide and (B) an epoxy compound. The said thermosetting resin composition retains heat resistance, electrically insulating properties and mechanical properties characteristic of polycarbodiimide, is excellent in solubility in various solvents and storage stability in the form of a solution and can be easily cured under mild conditions, and can produce a cured product excellent in humidity resistance, transparency, chemical stability and adhesiveness to various substrates.
Inventors
- 👤 Masayuki Takahashi
- 👤 Hiromi Komatsu
- 👤 Kazuo Kawaguchi
- 👤 Shuetsu Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:48
CPC Classifications
C; C08; C08L; C08L77/00; C08L63/00; C08F; C08F283/00; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/09; C08G18/095; C08G18/28; C08G18/30; C08G18/34; C08G18/343; C08G18/345; C08G59/00; C08G59/18; C08G59/40; C08K; C08K5/00; C08K5/04; C08K5/15; Y; Y10; Y10S; Y10S525/00; Y10S525/907
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
56 words
A thermosetting resin composition which comprises: (A) a resin in which at least one compound having a graft-reactive group and a carboxylic anhydride group has been grafted on a polycarbodiimide having a repeating unit represented by the general formula (1): --N═C═N--R.sup.1 -- (1) wherein R 1 represents a divalent organic group, and (B) an epoxy compound.
Claim 2
Dependent Claim
56 words
A thermosetting resin composition which comprises: (A) a resin in which at least one compound having a graft-reactive group and a carboxylic anhydride group has been grafted on a polycarbodiimide having a repeating unit represented by the general formula (1): --N═C═N--R.sup.1 -- (1) wherein R 1 represents a divalent organic group, and (B) an epoxy compound.
Claim 3
Dependent Claim
33 words
The thermosetting resin composition according to claim 1, wherein the polycarbodiimide is one obtained by reacting an organic polyisocyanate in the presence of a catalyst which accelerates the carbodiimidization of the isocyanate group.
Claim 4
Dependent Claim
18 words
The thermosetting resin composition according to claim 2, wherein the organic polyisocyanate is at least one organic diisocyanate.
Claim 5
Dependent Claim
22 words
The thermosetting resin composition according to claim 3, wherein the organic diisocyanate is an isocyanate prepolymer having isocyanate groups at both ends.
Claim 6
Dependent Claim
30 words
The thermosetting resin composition according to claim 1, wherein the polycarbodiimide has a polystyrene-reduced number average molecular weight Mn of 400 to 500,000 as determined by a gel permeation chromatography.
Claim 7
Dependent Claim
32 words
The thermosetting resin composition according to claim 1, wherein the compound having a graft-reactive group and a carboxylic anhydride group is a compound which reacts with the polycarbodiimide through the graft-reactive group.
Claim 8
Dependent Claim
21 words
The thermosetting resin composition according to claim 1, wherein the graft-reactive group is a functional group having an active hydrogen atom.
Claim 9
Dependent Claim
31 words
The thermosetting resin composition according to claim 1, wherein the graft-reactive group is selected from the group consisting of a carboxyl group, a primary amino group and a secondary amino group.
Claim 10
Dependent Claim
50 words
The thermosetting resin composition according to claim 1, wherein the compound having a graft-reactive group and a carboxylic anhydride group is at least one member selected from the group consisting of aromatic tricarboxylic anhydrides, monoalkyl esters of aromatic tetracarboxylic monoanhydrides, aliphatic tricarboxylic anhydrides, aminoaromatic dicarboxylic anhydrides and aminoaliphatic dicarboxylic anhydrides.
Claim 11
Dependent Claim
25 words
The thermosetting resin composition according to claim 1, wherein the compound having a graft-reactive group and a carboxylic anhydride group is an aromatic tricarboxylic anhydride.
Claim 12
Dependent Claim
23 words
The thermosetting resin composition according to claim 1, wherein the compound having a graft-reactive group and a carboxylic anhydride group is trimellitic anhydride.
Claim 13
Dependent Claim
55 words
The thermosetting resin composition according to claim 1, wherein the amount of the compound having a graft-reactive group and a carboxylic anhydride group used is such that the amount of the graft-reactive group of the compound is 0.01 to 1 mole per mole of the repeating unit of the general formula (1) of the polycarbodiimide.
Claim 14
Dependent Claim
34 words
The thermosetting resin composition according to claim 1, wherein the grafting of the compound having a graft-reactive group and a carboxylic anhydride group on the polycarbodiimide is effected in the presence of a solvent.
Claim 15
Dependent Claim
39 words
The thermosetting resin composition according to claim 1, wherein the grafting of at least one compound having a graft-reactive group and a carboxylic anhydride group on the polycarbodiimide is effected at a temperature of not more than 100° C.
Claim 16
Dependent Claim
39 words
The thermosetting resin composition according to claim 1, wherein the number average molecular weight of the resin obtained by grafting at least one compound having a graft-reactive group and a carboxylic anhydride on a polycarbodiimide is 500 to 1,000,000.
Claim 17
Dependent Claim
24 words
The thermosetting resin composition according to claim 1, wherein the epoxy compound is a compound having at least one epoxy group in the molecule.
Claim 18
Dependent Claim
16 words
The thermosetting resin composition according to claim 1, wherein the epoxy compound is an epoxy resin.
Claim 19
Dependent Claim
48 words
The thermosetting resin composition according to claim 1, wherein the epoxy resin is at least one epoxy resin selected from the group consisting of glycidyl ether epoxy resins, glycidyl ester epoxy resins, aromatic glycidyl amine epoxy resins, alicyclic epoxy resins, heterocyclic epoxy resins and liquid rubber-modified epoxy resins.
Claim 20
Dependent Claim
33 words
The thermosetting resin composition according to claim 1, wherein the amount of the epoxy compound (B) contained is 5 to 500 parts by weight per 100 parts by weight of the resin (A).
Claim 21
Dependent Claim
29 words
The thermosetting resin composition according to claim 1, which is obtained by mixing the resin (A) with the epoxy compound (B) in the presence or absence of a solvent.
Claim 22
Dependent Claim
14 words
A molded article obtained by molding the thermosetting resin composition according to claim 1.
Claim 23
Dependent Claim
16 words
The molded article according to claim 21, which is a heat-curable film or a cured film.
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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) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-19 | 2008-05-20 | 2008-11-19 | $7700.00 | Window Closed / Lapsed |