US4754001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting cyanate resin and the use thereof for the production of composite materials and IPNs
Assignee: Bayer AG
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Filing: 1986-09-12
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Granted: 1988-06-28
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Expires: 2006-09-12
Abstract
Abstract Interpenetrating polymer networks prepared from 60 to 99.9% by weight, of a thermoplast and 0.1 to 40% by weight of 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 moieties.
Inventors
- 👤 Johannes Blahak
- 👤 Rolf Dhein
- 👤 Lothar Preis
- 👤 Manfred Schreckenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:22
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: 9
Claim 1
Independent Claim
92 words
Interpenetrating polymer networks prepared from 0.1 to 40% by weight of a thermosetting resin and 99.9 to 60% by weight of thermoplasts wherein the thermosetting resin 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 moieties.
Claim 2
Dependent Claim
92 words
Interpenetrating polymer networks prepared from 0.1 to 40% by weight of a thermosetting resin and 99.9 to 60% by weight of thermoplasts wherein the thermosetting resin 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 moieties.
Claim 3
Dependent Claim
19 words
Interpenetrating polymer networks according to claim 1 wherein the amount of thermosetting resin is 0.1 to 9% by weight.
Claim 4
Dependent Claim
20 words
Interpenetrating polymer networks according to claim 1 wherein component (b) is from 5 to 20% by weight, based on (a).
Claim 5
Dependent Claim
29 words
Interpenetrating polymer networks according to claim 1 wherein the molecular weight M n of (b) is from 800 to 4,000 and the hydroxyl number is from 28 to 140.
Claim 6
Dependent Claim
25 words
Interpenetrating polymer networks according to claim 1 wherein at least a portion of (b) is in the form of a prepolymer of (a) and (b).
Claim 7
Dependent Claim
32 words
Interpenetrating, polymer networks according to claim 1 wherein (b) contains 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
92 words
Interpenetrating polymer networks prepared from 0.1 to 9% by weight of a thermosetting resin and 99.9 to 91% by weight of thermoplasts wherein the thermosetting resin comprises: (a) at least one polycyanate and (b) from 5 to 20% 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 moieties.
Claim 9
Dependent Claim
92 words
Interpenetrating polymer networks prepared from 0.1 to 9% by weight of a thermosetting resin and 99.9 to 91% by weight of thermoplasts wherein the thermosetting resin comprises: (a) at least one polycyanate and (b) from 5 to 20% 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 moieties.
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) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |