Patent US3821098A successfully refreshed from Google Patents.
US3821098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the curing of hydantoin containing acrylic acid ester derivatives with ionising rays
Assignee: Novartis Corp
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Filing: 1972-04-05
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Granted: 1974-06-28
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Expires: 1992-04-05
Abstract
Abstract Coatings with commercially valuable surface properties are obtained by application of certain polyacrylates, produced by esterification of oxalkylated N,N-heterocycles with acrylic acid and/or methacrylic acid, on to base materials, the said polyacrylates being applied in the form of thin layers which are cured with ionising rays.
Inventors
- 👤 P Garratt
- 👤 P Zuppinger
- 👤 J Habermeier
- 👤 D Porret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:40
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
24 words
Process according to claim 1, the said process comprising the irradiation of polyacrylates of formula I in admixture with other reactive olefinic unsaturated monomers.
Claim 2
Dependent Claim
38 words
Process according to claim 1 or 2, wherein the curing of the polyacrylates is effected by means of an ionising radiation produced by electrons with a mean energy of at least 50 KeV, and at most 4 MeV.
Claim 3
Dependent Claim
33 words
Process according to claim 1 or 2, wherein the curing of the polyacrylates is effected by means of an ionising radiation produced by electrons with a mean energy of 50 to 600 KeV.
Claim 4
Dependent Claim
29 words
Process according to claim 1 or 2, wherein the curing of the polyacrylates is effected by means of an ionising radiation in the form of Roentgen or gamma rays.
Claim 5
Dependent Claim
27 words
Process according to claims 1 to 5, wherein the polyacrylates are subjected, before, during or after the action of an ionising radiation, additionally to a heat treatment.
Claim 6
Dependent Claim
25 words
Process according to claims 1 to 6, wherein the action of an ionising radiation on the polyacrylates is applied in an atmosphere low in oxygen.
Claim 7
Dependent Claim
18 words
Process according to claims 1 to 7, the said process comprising the use of polyacrylates of the formula:
Claim 8
Dependent Claim
17 words
Process according to claim 8, the said process comprising the use of a diacrylate of the formula:
Claim 9
Dependent Claim
17 words
Process according to claim 8, the said process comprising the use of a diacrylate of the formula:
Claim 10
Dependent Claim
17 words
Process according to claim 8, the said process comprising the use of a diacrylate of the formula:
Claim 11
Dependent Claim
17 words
Process according to claim 8, the said process comprising the use of a diacrylate of the formula:
Claim 12
Dependent Claim
17 words
Process according to claim 8, the said process comprising the use of a triacrylate of the formula:
Claim 13
Dependent Claim
18 words
Process according to claims 1 to 7, the said process comprising the use of polyacrylates of the formula:
Claim 14
Dependent Claim
29 words
Process according to claIms 2 to 14, wherein the curable polyacrylate mixture contains as monomers methacrylate, butylacrylate, methylmethacrylate, acrylonitrile, styrene, ethylene glycol dimethacrylate, divinyl benzene, vinyl acetate or diallyl-o-phthalate.
Claim 15
Dependent Claim
20 words
Process according to claims 1 to 15, wherein the curable synthetic resin mixture additionally contains fillers, pigments and/or flexibilisng agents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |