US3892884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of protective coating
Assignee: Lonza AG
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Filing: 1972-01-25
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Granted: 1975-07-01
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Expires: 1992-01-25
Abstract
Abstract A material useful as a protective coating is obtainable by subjecting a synthetic resin mixture containing a chlorinated polyolefin, such as chlorinated polyethylene, chlorinated polypropylene, chlorinated polybutylene or a chlorinated natural or synthetic rubber and a reactive olefinically unsaturated monomer selected from ethyl or butyl acrylate, butyl methacrylate or ethyl hexyl acrylate to ionizing radiation such as gamma ray radiation.
Inventors
- 👤 Peter Garth Garratt
- 👤 Juerg Hoigne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; B; B05; B05D; B05D7/00; B05D7/24; C08F255/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
76 words
A METHOD WHICH COOMPRISES COATING A SUBSTRATE WITH A MIXTURE CONSISTING OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF CHLORINATED POLYETHLENE, CHLORINATED POLYPROPYLENE, CHLORINATE POLYBUTLENE AND CHLORINATED RUBBER TOGETHER WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ETHYL ACRYLENE, BUTYL ACRYLATE, BUTYL METHACRYLATE AND ETHYL HEXYL ACRYLATE AND EXPOSING THE COATING TO A SUFFICIENT AMOUNT OF IRONIZING RADIATION TO HARDEN SAID MIXTURE AND FORM A PRTECTIVE COATING ON SAID SUBSTRATE.
Claim 2
Independent Claim
76 words
A METHOD WHICH COOMPRISES COATING A SUBSTRATE WITH A MIXTURE CONSISTING OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF CHLORINATED POLYETHLENE, CHLORINATED POLYPROPYLENE, CHLORINATE POLYBUTLENE AND CHLORINATED RUBBER TOGETHER WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ETHYL ACRYLENE, BUTYL ACRYLATE, BUTYL METHACRYLATE AND ETHYL HEXYL ACRYLATE AND EXPOSING THE COATING TO A SUFFICIENT AMOUNT OF IRONIZING RADIATION TO HARDEN SAID MIXTURE AND FORM A PRTECTIVE COATING ON SAID SUBSTRATE.
Claim 3
Dependent Claim
31 words
A method in accordance with claim 1 wherein said ionizing radiation is a beam of electrons having an average energy of at least 50 keV and not more than 4,000 keV.
Claim 4
Dependent Claim
14 words
A method in accordance with claim 1 wherein said ionizing radiation is X-ray radiation.
Claim 5
Dependent Claim
15 words
A method in accordance with claim 1 wherein said ionizing radiation is gamma -ray radiation.
Claim 6
Dependent Claim
26 words
A method in accordance with claim 1 wherein said first mentioned member is selected from the group consisting of chlorinated polyethylene, chlorinated polypropylene and chlorinated rubber.
Claim 7
Dependent Claim
14 words
A method as in claim 1 wherein the chlorinated rubber is chlorinated natural rubber.
Claim 8
Dependent Claim
14 words
A method as in claim 1 wherein the chlorinated rubber is chlorinated synthetic rubber.
Claim 9
Dependent Claim
42 words
A method in accordance with claim 1 wherein said coating has a thickness in the range from about 20 to about 500 microns and wherein said ionizing radiation comprises a beam of electrons having an aVerage energy of 50 to 600 keV.
Claim 10
Dependent Claim
14 words
A method in accordance with claim 1 including heat treatment of the applied coating.
Claim 11
Dependent Claim
20 words
A method in accordance with claim 9 wherein the applied coating is heated before being exposed to the ionizing radiation.
Claim 12
Dependent Claim
20 words
A method in accordance with claim 9 wherein the applied coating is heated after having been exposed to ionizing radiation.
Claim 13
Dependent Claim
19 words
A method in accordance with claim 9 wherein the applied coating is heated while being exposed to ionizing radiation.
Claim 14
Dependent Claim
21 words
A method in accordance with claim 1 wherein said coating is exposed to said ionizing radiation in a substantially oxygen-free atmosphere.
Claim 15
Dependent Claim
28 words
A method in accordance with claim 1 wherein said synthetic resin mixture contains a minor effective amount of a polymerization catalyst which is capable of forming free radicals.
Claim 16
Dependent Claim
24 words
A method in accordance with claim 1 wherein one component of the mixture is chlorinated polypropylene and another component of the mixture is butylacrylate.
Claim 17
Dependent Claim
25 words
A method in accordance with claim 2 wherein said synthetic resin mixture contains a minor amount of fillers, pigments, plasticizers, stabilizing agents, or mixtures thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |