Patent JP2002173641A successfully refreshed from Google Patents.
Patent US4631319A successfully refreshed from Google Patents.
US4631319A
Expired / Lapsed
US
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Thermosetting cyanate resin and the use thereof for the production of composite materials and IPNs
Assignee: Bayer AG
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Filing: 1985-04-01
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Granted: 1986-12-23
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Expires: 2005-04-01
Abstract
Abstract This invention relates to a thermosetting resin of either (a) at least one polycyanate and (b) at least one polyester polyol or of (c) a prepolymer of (a) and (b) and to the use thereof for the production of composite materials and of interpenetrating polymer networks (IPNs).
Inventors
- 👤 Johannes Blahak
- 👤 Rolf Dhein
- 👤 Lothar Preis
- 👤 Manfred Schreckenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:25
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/91; C08G18/00; C08G18/06; C08G18/83; C08G64/00; C08G64/02; C08G2270/00; Y; Y10; Y10S; Y10S525/00; Y10S525/903
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
70 words
A thermosetting resin which comprises: (a) at least one polycyanate and (b) from 1 to 40%, by weight, based on (a), of at least one polyester having a hydroxyl number of from 28 to 320, a number average molecular weight M n of from 700 to 8000 and containing from 50 to 92%, by weight, of alcohol residues, acid residues, or both with each of said residues containing cycloaliphatic moieites.
Claim 2
Dependent Claim
70 words
A thermosetting resin which comprises: (a) at least one polycyanate and (b) from 1 to 40%, by weight, based on (a), of at least one polyester having a hydroxyl number of from 28 to 320, a number average molecular weight M n of from 700 to 8000 and containing from 50 to 92%, by weight, of alcohol residues, acid residues, or both with each of said residues containing cycloaliphatic moieites.
Claim 3
Dependent Claim
21 words
A resin as claimed in claim 1 wherein from 5 to 20%, by weight, based on (a), of (b) is present.
Claim 4
Dependent Claim
30 words
A resin as claimed in claim 1 or claim 2 wherein M n of (b) is from 800 to 4000 and its hydroxyl number is of from 28 to 140.
Claim 5
Dependent Claim
25 words
A thermosetting resin according to claim 1 wherein at least a portion of (b) is in the form of a prepolymer of (a) and (b).
Claim 6
Dependent Claim
16 words
Shaped article of manufacture fabricated from a cured thermoplastic resin according to claim 1 or 2.
Claim 7
Dependent Claim
35 words
A resin as claimed in claim 1 or 2 wherein (b) contains from 75 to 92%, by weight of alcohol residues containing cycloaliphatic moieties, acid residues containing cycloaliphatic moieties or a mixture of said residues.
Claim 8
Dependent Claim
27 words
A resin as claimed in claim 1 or 2 wherein (b) contains cycloaliphatic dimerized fatty alcohol residues, dimerized fatty acid residues or a mixture of said residues.
References Cited (Backward Citations)
US4330669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |