Patent US4057657A successfully refreshed from Google Patents.
US4057657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable pre-polymer compositions, method of making and method of coating articles therewith
Assignee: Individual
•
Filing: 1974-12-04
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Granted: 1977-11-08
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Expires: 1994-12-04
Abstract
Abstract Prepolymers prepared by U.V. or γ irradiation of an ethylenically unsaturated monomer or monomers until a predetermined but incomplete degree of polymerization has been achieved. Coatings formed by the U.V. or electron beam curing of such prepolymers are also comprehended.
Inventors
- 👤 John Lyndon Garnett
- 👤 John Denis Rock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:49
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; Y; Y10; Y10S; Y10S522/00; Y10S522/911
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
82 words
A process for the preparation of a prepolymer capable of being cured by ultra-violet or ionising radiation, comprising the steps of subjecting a mixture of a polymerizable ethylenically unsaturated monomer or a mixture of such monomers and a polymer selected from the group consisting of polyamides, polyesters including alkyl resins, polycarbonates, epoxy resins, polyvinylalcohols, polyvinylchlorides, polysilanes and polysiloxanes, to ultra-violet or ionising radiation, until a predetermined but incomplete degree of polymerisation is achieved; and removing the prepolymer so formed from the radiation.
Claim 2
Dependent Claim
82 words
A process for the preparation of a prepolymer capable of being cured by ultra-violet or ionising radiation, comprising the steps of subjecting a mixture of a polymerizable ethylenically unsaturated monomer or a mixture of such monomers and a polymer selected from the group consisting of polyamides, polyesters including alkyl resins, polycarbonates, epoxy resins, polyvinylalcohols, polyvinylchlorides, polysilanes and polysiloxanes, to ultra-violet or ionising radiation, until a predetermined but incomplete degree of polymerisation is achieved; and removing the prepolymer so formed from the radiation.
Claim 3
Dependent Claim
21 words
A process as claimed in claim 1 in which the ethylenically unsaturated monomer or monomers, include a vinyl or vinylidene group.
Claim 4
Dependent Claim
32 words
A process as claimed in claim 2 in which the monomer or mixture of monomers is selected from the group consisting of styrene, vinyl chloride/ethyl acrylate blend, and vinyl chloride/methyl acrylate blend.
Claim 5
Dependent Claim
37 words
A process as claimed in claim 2 in which the monomer or mixture of monomers is selected from the group consisting of styrene, butyl acrylate, methyl methacrylate, vinylidene chloride, ethyl acrylate, acrylonitrile, vinyl acetate and mixtures thereof.
Claim 6
Dependent Claim
24 words
A process as claimed in claim 2 in which the monomer or monomers is selected from the group consisting of acrylic acid/allyl acrylate blends.
Claim 7
Dependent Claim
28 words
A process as claimed in claim 2 in which the monomer or monomers is selected from the group consisting of methyl methacrylate/acrylonitrile blends and methyl methacrylate/vinyl acetate blends.
Claim 8
Dependent Claim
35 words
A process as claimed in claim 2 in which the monomer or monomers selected from the group consisting of blends of butyl acrylate with methyl methacrylate, methyl methacrylate with vinyl acetate and ter-polymers of isoprene/styrene/acrylonitrile.
Claim 9
Dependent Claim
16 words
A process as claimed in claim 1 in which the prepolymer is formed by U.V. irradiation.
Claim 10
Dependent Claim
15 words
A process as claimed in claim 1 in which the prepolymer is formed by γ-irradiation.
Claim 11
Dependent Claim
33 words
A process as claimed in claim 1 comprising the additional steps of applying the prepolymer thus formed to a substrate and curing the prepolymer thereon by subjecting it to ultra-violet or ionising radiation.
Claim 12
Dependent Claim
15 words
A process as claimed in claim 10 wherein the prepolymer is cured by ultra-violet radiation.
Claim 13
Dependent Claim
16 words
A process as claimed in claim 10 wherein the prepolymer is cured by electron beam irradiation.
References Cited (Backward Citations)
US2367660A
Cited
US2413973A
Cited
US2718515A
Cited
US3361842A
Cited
US3449294A
Cited
US3459691A
Cited
US3546002A
Cited
US3770490A
Cited
US3738924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |