US4788233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resin composition
Assignee: Sunstar Giken KK
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Filing: 1987-11-18
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Granted: 1988-11-29
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Expires: 2007-11-18
Abstract
Abstract A modified epoxy resin composition having improved flexibility which comprises a reaction product of an epoxy resin and a synthetic rubber reactive with an epoxy resin in the presence of a nonionic or anionic surfactant, which has uniform and stable dispersion state of the rubber in epoxy resin without increase of viscosity. The epoxy resin composition is useful as a material for adhesives and coating agents.
Inventors
- 👤 Toshimori Sakakibara
- 👤 Takahiro Nakano
- 👤 Tatsuya Okuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:02
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56; C08G59/4007; C08G59/4014; C08G59/4021; C08G59/5046; C08G59/5053; C08G59/5073; C08L; C08L63/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
52 words
An epoxy resin composition which comprises a reaction product of 100 parts by weight of an epoxy resin and 2 to 100 parts by weight of a synthetic rubber reactive with the epoxy resin and incorporated in the reaction product 1 to 20 parts by weight of a nonionic or anionic surfactant.
Claim 2
Dependent Claim
52 words
An epoxy resin composition which comprises a reaction product of 100 parts by weight of an epoxy resin and 2 to 100 parts by weight of a synthetic rubber reactive with the epoxy resin and incorporated in the reaction product 1 to 20 parts by weight of a nonionic or anionic surfactant.
Claim 3
Dependent Claim
24 words
The composition according to claim 1, wherein the amount of the synthetic rubber is in the range of 10 to 50 parts by weight.
Claim 4
Dependent Claim
23 words
The composition according to claim 1, wherein the amount of the surfactant is in the range of 5 to 10 parts by weight.
Claim 5
Dependent Claim
51 words
The composition according to claim 1, wherein the reaction product of an epoxy resin and a synthetic rubber is prepared by reacting the epoxy resin and the synthetic rubber reactive with an epoxy resin in the presence of a nonionic or anionic surfactant at a temperature of 70° to 150° C.
Claim 6
Dependent Claim
51 words
A process for preparing an epoxy resin composition, which comprises reacting 100 parts by weight of an epoxy resin with 2 to 100 parts by weight of a synthetic rubber reactive with an epoxy resin in the presence of 1 to 20 parts by weight of a nonionic or anionic surfactant.
Claim 7
Dependent Claim
51 words
A process for preparing an epoxy resin composition, which comprises reacting 100 parts by weight of an epoxy resin with 2 to 100 parts by weight of a synthetic rubber reactive with an epoxy resin in the presence of 1 to 20 parts by weight of a nonionic or anionic surfactant.
Claim 8
Dependent Claim
48 words
A process for preparing an epoxy resin composition, which comprises reacting 100 parts by weight of an epoxy resin with 2 to 100 parts by weight of a synthetic rubber and incorporating in the reaction product 1 to 20 parts by weight of a nonionic or anionic surfactant.
Claim 9
Dependent Claim
48 words
A process for preparing an epoxy resin composition, which comprises reacting 100 parts by weight of an epoxy resin with 2 to 100 parts by weight of a synthetic rubber and incorporating in the reaction product 1 to 20 parts by weight of a nonionic or anionic surfactant.
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) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |