US4387011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition for aqueous paint
Assignee: Kansai Paint Co Ltd
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Filing: 1980-08-18
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Granted: 1983-06-07
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Expires: 2000-08-18
Abstract
Abstract A resin composition for aqueous paint is produced by exposing to electron beams a mixture comprising 50 to 95 wt % of an epoxy resin, 1 to 23 wt % of an ethylenically unsaturated monomer having a carboxyl group and 4 to 44 wt % of a monomer having one ethylenically unsaturated bond in the molecule. The resin composition provides a coating having good coating surface, adhesion strength, solvent resistance, water resistance and processability.
Inventors
- 👤 Keizo Makuuchi
- 👤 Tohru Takagi
- 👤 Hiroyuki Nakayama
- 👤 Tsutomu Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:21
CPC Classifications
C; C09; C09D; C09D163/00; C09D163/10; C08; C08F; C08F283/00; C08F283/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
98 words
An epoxy resin composition for aqueous paint wherein substantially all oxirane rings in the epoxy resin remain intact, comprising a composition produced by stirring at a temperature below 100° C. a mixture comprising 50 to 95 wt% of an epoxy resin, 1 to 23 wt% of an ethylenically unsaturated monomer having a carboxyl group, and 4 to 44 wt% of a monomer having one ethylenically unsaturated bond in the molecule and then exposing the mixture to electron beams at a dose rate of 2×10 -2 to 30 MR/sec to give a total dose of 0.1 to 30 MR.
Claim 2
Dependent Claim
98 words
An epoxy resin composition for aqueous paint wherein substantially all oxirane rings in the epoxy resin remain intact, comprising a composition produced by stirring at a temperature below 100° C. a mixture comprising 50 to 95 wt% of an epoxy resin, 1 to 23 wt% of an ethylenically unsaturated monomer having a carboxyl group, and 4 to 44 wt% of a monomer having one ethylenically unsaturated bond in the molecule and then exposing the mixture to electron beams at a dose rate of 2×10 -2 to 30 MR/sec to give a total dose of 0.1 to 30 MR.
Claim 3
Dependent Claim
16 words
A resin composition according to claim 1 wherein said total dose is 1 to 20 MR.
Claim 4
Dependent Claim
37 words
A composition according to claim 1 wherein the epoxy resin, ethylenically unsaturated monomer having a carboxyl group and the monomer having one ethylenically unsaturated bond in the molecule are mixed in the presence of an organic solvent.
Claim 5
Dependent Claim
37 words
A composition according to claim 1 wherein the epoxy resin, ethylenically unsaturated monomer having a carboxyl group and the monomer having one ethylenically unsaturated bond in the molecule are mixed in the presence of an inert gas.
Claim 6
Dependent Claim
129 words
A resin composition for aqueous paint comprising a composition produced by stirring a mixture comprising 50 to 95 wt% of an epoxy resin, 1 to 23 wt% of an ethylenically unsaturated monomer having a carboxyl group, and 4 to 44 wt% of a monomer having one ethylenically unsaturated bond in the molecule; forming said mixture into a sheet having a thickness of 0.1 to 50 mm; exposing said sheet to electron beams at a dose rate of 2×10 -2 to 30 MR/sec to give a total dose of 1 to 20 MR, said afore-mentioned steps being carried out at a temperature below 100° C. to thereby obtain a composition wherein the epoxy resin maintains substantially all of its oxirane ring content; and grinding the resultant irradiated sheet into particles.
Claim 7
Dependent Claim
129 words
A resin composition for aqueous paint comprising a composition produced by stirring a mixture comprising 50 to 95 wt% of an epoxy resin, 1 to 23 wt% of an ethylenically unsaturated monomer having a carboxyl group, and 4 to 44 wt% of a monomer having one ethylenically unsaturated bond in the molecule; forming said mixture into a sheet having a thickness of 0.1 to 50 mm; exposing said sheet to electron beams at a dose rate of 2×10 -2 to 30 MR/sec to give a total dose of 1 to 20 MR, said afore-mentioned steps being carried out at a temperature below 100° C. to thereby obtain a composition wherein the epoxy resin maintains substantially all of its oxirane ring content; and grinding the resultant irradiated sheet into particles.
References Cited (Backward Citations)
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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) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |