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
•
Granted: 1977-11-08
•
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 01:55
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)
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US3449294A
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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) | 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 |