US3869341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plywood comprising ionizing radiation cured cross-linked diallyl phthalate acrylonitrile polymer and method of making
Assignee: Japan Atomic Energy Agency
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Filing: 1972-03-31
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Granted: 1975-03-04
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Expires: 1992-03-31
Abstract
Abstract A composition substantially comprising diallylphthalate prepolymer and acrylonitrile or a mixture of acrylonitrile and an alkylacrylate is cured by means of an electron beam as well as other ionizing radiations to form a cross-linked resin having excellent properties. A vinyl phosphate incorporated in the composition makes the cured coating anticorrosive and adhesive to metal surface. The composition is useful as a coating of adhesion agent, or for the manufacture of decorative plywood, colored coiled steel sheet, etc., and for preparing an anticorrosive paint.
Inventors
- 👤 Masao Gotoda
- 👤 Kenji Yokoyama
- 👤 Yoshimi Kono
- 👤 Shigekazu Toyonishi
- 👤 Kunio Hiwano
- 👤 Takaitsu Shimoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:13
CPC Classifications
B; B32; B32B; B32B21/00; B32B21/04; B32B21/08; B27; B27K; B27K3/00; B27K3/02; B27K3/15; B27K5/00; B27K5/003; C; C08; C08F; C08F263/00; C08F263/06; C08F263/08; C08L; C08L97/00; C08L97/02; B32B2333/00; B32B2367/00; C08K; C08K5/00; C08K5/16; C08K5/315; C08L67/00; C08L67/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
73 words
A method of preparing a wood-polymer composite, comprising: impregnating a thin wooden board with a resin-forming composition comprising diallyl phthalate prepolymer and acrylonitrile in an amount sufficient to dissolve the diallyl phthalate prepolymer to give a uniform solution thereof, and curing the resin-forming composition by exposing said composition by ionizing radiation; thereby forming a wood-polymer composite consisting essentially of a highly-cured, cross-linked diallyl phthalate polymer which is intimately united with said wooden board.
Claim 2
Independent Claim
73 words
A method of preparing a wood-polymer composite, comprising: impregnating a thin wooden board with a resin-forming composition comprising diallyl phthalate prepolymer and acrylonitrile in an amount sufficient to dissolve the diallyl phthalate prepolymer to give a uniform solution thereof, and curing the resin-forming composition by exposing said composition by ionizing radiation; thereby forming a wood-polymer composite consisting essentially of a highly-cured, cross-linked diallyl phthalate polymer which is intimately united with said wooden board.
Claim 3
Dependent Claim
15 words
The method of claim 1, wherein the resin-forming composition additionally comprises a free-radical polymerization initiator.
Claim 4
Dependent Claim
19 words
The method of claim 1, wherein the resin-forming composition additionally comprises a polymerizable vinyl monomer in addition to acrylonitrile.
Claim 5
Dependent Claim
22 words
The method of claim 1, wherein the resin-forming composition is exposed to ionizing radiation by exposing said composition with an electron beam.
Claim 6
Independent Claim
99 words
A method of preparing a wood-polymer composite plywood having a plurality of layers, comprising: impregnating at least one of plurality of thin wooden boards with a resin-forming composition comprising diallyl phthalate prepolymer and acrylonitrile in an amount sufficient to dissolve the diallyl phthalate prepolymer to give a uniform solution thereof; laminating the plurality of boards together; and curing said composition and simultaneously adhering said plurality of boards together by exposing said resin-forming composition to ionizing radiation; thereby forming a wood-polymer composite plywood consisting essentially of a highly-cured, cross-linked diallyl phthalate polymer which is intimaTely united with said wooden boards.
Claim 7
Independent Claim
99 words
A method of preparing a wood-polymer composite plywood having a plurality of layers, comprising: impregnating at least one of plurality of thin wooden boards with a resin-forming composition comprising diallyl phthalate prepolymer and acrylonitrile in an amount sufficient to dissolve the diallyl phthalate prepolymer to give a uniform solution thereof; laminating the plurality of boards together; and curing said composition and simultaneously adhering said plurality of boards together by exposing said resin-forming composition to ionizing radiation; thereby forming a wood-polymer composite plywood consisting essentially of a highly-cured, cross-linked diallyl phthalate polymer which is intimaTely united with said wooden boards.
Claim 8
Independent Claim
96 words
A method of preparing a plywood comprising a wood polymer composite and a substrate, comprising: impregnating a thin wooden board with a resin-forming composition comprising diallyl phthalate prepolymer and acrylonitrile in an amount sufficient to dissolve the diallyl phthalate prepolymer to give a uniform solution thereof; laminating the impregnated board with a substrate; and curing said composition and simultaneously adhering said board to said substrate by exposing said resin-forming composition to ionizing radiation; thereby forming a wood-polymer composite plywood consisting essentially of a highly-cured, cross-linked diallyl phthalate polymer which is intimately united with said wooden boards.
Claim 9
Independent Claim
96 words
A method of preparing a plywood comprising a wood polymer composite and a substrate, comprising: impregnating a thin wooden board with a resin-forming composition comprising diallyl phthalate prepolymer and acrylonitrile in an amount sufficient to dissolve the diallyl phthalate prepolymer to give a uniform solution thereof; laminating the impregnated board with a substrate; and curing said composition and simultaneously adhering said board to said substrate by exposing said resin-forming composition to ionizing radiation; thereby forming a wood-polymer composite plywood consisting essentially of a highly-cured, cross-linked diallyl phthalate polymer which is intimately united with said wooden boards.
Claim 10
Dependent Claim
19 words
The method of claim 6, wherein the resin-forming composition additionally comprises a polymerizable vinyl monomer in addition to acrylonitrile.
Claim 11
Dependent Claim
15 words
The method of claim 6, wherein the resin-forming composition additionally comprises a polymerizable ethylenically-unsaturated polyester.
Claim 12
Dependent Claim
25 words
The method of claim 6, wherein a mold-release sheet is in contact with the surface of the impregnated wooden board during exposure to ionizing radiation.
Claim 13
Dependent Claim
22 words
The method of claim 6, wherein the resin-forming composition is exposed to ionizing radiation by exposing said composition with an electron beam.
Claim 14
Dependent Claim
42 words
A WOOD-POLYMER COMPOSITE PLYWOOD CONSISTING ESSENTIALLY OF A PLURALITY OF LAMINATED THIN WOODEN LAYERS, AT LEAST ONE OF THE THIN LAYERS BEING IMPREGNATED WITH AN IONIZING RADIATION CURED, CROSS-LINKED DIALLYL PHTHALATE-ACRYLONITRILE POLYMER; SAID CURED POLYMER BEING INTIMATELY UNITED WITH SAID WOODEN LAYERS.
Claim 15
Dependent Claim
42 words
A WOOD-POLYMER COMPOSITE PLYWOOD CONSISTING ESSENTIALLY OF A PLURALITY OF LAMINATED THIN WOODEN LAYERS, AT LEAST ONE OF THE THIN LAYERS BEING IMPREGNATED WITH AN IONIZING RADIATION CURED, CROSS-LINKED DIALLYL PHTHALATE-ACRYLONITRILE POLYMER; SAID CURED POLYMER BEING INTIMATELY UNITED WITH SAID WOODEN LAYERS.
Claim 16
Dependent Claim
40 words
A plywood comprising a wood-polymer composite and a substrate, wherein said wood-polymer composite comprises a thin wooden board impregnated with an ionizing radiation cured; cross-linked diallyl phthalate-acrylonitrile polymer, and said board is laminated to said substrate by said cured polymer.
Claim 17
Dependent Claim
40 words
A plywood comprising a wood-polymer composite and a substrate, wherein said wood-polymer composite comprises a thin wooden board impregnated with an ionizing radiation cured; cross-linked diallyl phthalate-acrylonitrile polymer, and said board is laminated to said substrate by said cured polymer.
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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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |