US4288565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storable, solid mixture for the preparation of plastics which are based on epoxide resin and are stable to hydrolysis, the use of this mixture for the preparation of such plastics and plastics obtained in this way
Assignee: BASF Corp
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Filing: 1979-06-11
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Granted: 1981-09-08
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Expires: 1999-06-11
Abstract
Abstract Storable, solid mixture of (a) a long-chain epoxide resin which is free from ester groups and has a high epoxide equivalent weight, (b) an epoxide resin which is free from ester groups, contains cyclic structure and two to three epoxide groups in the molecule and has a low epoxide equivalent weight, (c) a triphenol and (d) a curing accelerator and, if desired, a blowing agent. Laminates, foams, compression moulded articles and adhesive bonds which are stable to hydrolysis, resistant to heat distortion and flexible are obtained on heating.
Inventors
- 👤 Friedrich Lohse
- 👤 Ferdinand Gutekunst
- 👤 Rolf Schmid
- 👤 Andre Schmitter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:48
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C07; C07C; C07C37/00; C07C37/11; C07C37/20; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/32; C08G59/38; C08G59/40; C08G59/62; C08G59/621; C08G59/68; C08J2363/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
166 words
A storable, solid mixture for the preparation of a plastic which is based on epoxide resin and is stable to hydrolysis, which comprises (a) a long-chain, linear epoxide resin, which is free from ester groups, is solid at room temperature and has an epoxide equivalent weight of > 700; (b) a compound which is free from ester groups, contains cyclic structures and 2 or 3 epoxide groups in the molecule and has an epoxide equivalent weight of 100 to 400, the components (a) and (b) being present in a ratio such that, per 1 total epoxide equivalent, 0.05 to 0.3 equivalent originates from (a) and 0.7 to 0.95 equivalent originates from (b); (c) the condensation product of 3 mols of phenol and 1 mol of acrolein, in an amount such that there are 0.5 to 1.1 equivalents of the phenolic hydroxy compound per epoxide equivalent with 0 to 70 equivalent % of said product being replaced by a phenolic bis-hydroxy compound; and (d) a curing accelerator.
Claim 2
Dependent Claim
166 words
A storable, solid mixture for the preparation of a plastic which is based on epoxide resin and is stable to hydrolysis, which comprises (a) a long-chain, linear epoxide resin, which is free from ester groups, is solid at room temperature and has an epoxide equivalent weight of > 700; (b) a compound which is free from ester groups, contains cyclic structures and 2 or 3 epoxide groups in the molecule and has an epoxide equivalent weight of 100 to 400, the components (a) and (b) being present in a ratio such that, per 1 total epoxide equivalent, 0.05 to 0.3 equivalent originates from (a) and 0.7 to 0.95 equivalent originates from (b); (c) the condensation product of 3 mols of phenol and 1 mol of acrolein, in an amount such that there are 0.5 to 1.1 equivalents of the phenolic hydroxy compound per epoxide equivalent with 0 to 70 equivalent % of said product being replaced by a phenolic bis-hydroxy compound; and (d) a curing accelerator.
Claim 3
Dependent Claim
36 words
A mixture according to claim 1, which contains components (a) and (b) in a ratio such that, per 1 epoxide equivalent, 0.05 to 0.2 equivalent originates from (a) and 0.8 to 0.95 equivalent originates from (b).
Claim 4
Dependent Claim
32 words
A mixture according to claim 1, which contains, as component (c), a trisphenol of the formula I ##STR4## in which R 1 and R 2 are hydrogen, and R 3 is hydrogen.
Claim 5
Dependent Claim
21 words
A mixture according to claim 1, which contains, as component (a), a diglycidyl compound with an epoxide equivalent weight of >1,000.
Claim 6
Dependent Claim
25 words
A mixture according to claim 1, which contains, as component (b), a di- or tri-epoxide compound with an epoxide equivalent weight of 150 to 300.
Claim 7
Dependent Claim
19 words
A mixture according to claim 5, which contains, as component (b), the diglycidyl ether of bisphenol A or F.
Claim 8
Dependent Claim
17 words
A mixture according to claim 5, which contains, as component (b), an epoxyphenol novolac or epoxycresol novolac.
Claim 9
Dependent Claim
22 words
A mixture according to claim 5, which contains, as component (b), triglycidyl isocyanurate or a di- or triglycidyl derivative of a hydantoin.
Claim 10
Dependent Claim
25 words
A mixture according to claim 1, which contains, as component (d), a tertiary amine, an imidazole, an alkali metal alcoholate or a quaternary ammonium salt.
Claim 11
Dependent Claim
104 words
A mixture according to claim 1, which contains, as component (a), a diglycidyl ether of an advanced bisphenol A, with an epoxide content of 0.5 equivalent/kg, as component (b) an epoxide novolac with an epoxide content of 5.6 equivalents/kg, the components (a) and (b) being present in a ratio such that, per 1 epoxide equivalent, 0.1 equivalent originates from (a) and 0.9 equivalent originates from (b), as component (c), 1,1,3-tris-(hydroxyphenyl)-propane and bisphenol A in a ratio such that, per 1 epoxide equivalent, 0.5 equivalent of the phenolic hydroxy groups originates from 1,1,3-tris-(hydroxyphenyl)-propane and 0.5 equivalent originates from bisphenol A, and, as component (d), 1-methylimidazole.
Claim 12
Dependent Claim
12 words
A mixture according to claim 1, which additionally contains a blowing agent.
Claim 13
Dependent Claim
19 words
A plastic which is based on epoxide resin and has been prepared from a mixture according to claim 1.
Claim 14
Dependent Claim
24 words
A plastic prepared from a mixture according to claim 1 by allowing said mixture to react at a temperature of more than 120° C.
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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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |