US3871908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of urethane group containing coatings by curing with ionizing radiation
Assignee: BASF SE
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Filing: 1971-12-28
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Granted: 1975-03-18
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Expires: 1991-12-28
Abstract
Abstract The present invention relates to a process for the manufacture of coatings by applying ionizing radiation to a composition which contains olefinically unsaturated polymeric materials having urethane groups and has been applied to a substrate. The polymeric materials, which may be used in combination with olefinically unsaturated monomeric compounds and conventional additives, contain, in the same molecule, at least two units of the general formula AND/OR WHERE R is hydrogen or methyl.
Inventors
- 👤 Herbert Spoor
- 👤 Kurt Demmler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:36
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/24; C; C08; C08F; C08F283/00; C08F283/01; C08F299/00; C08F299/02; C08F299/06; C08F299/065; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/81; C08G18/8108; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31591; Y10T428/31598; Y10T428/31601; Y10T428/31605; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
84 words
A PROCESS FOR THE MANUFACTURE OF COATING WHICH COMPRISES: APPLYING A COATING COMPOSITION CONTAINING AN OLEFINICALLY UNSATURATED, URETHANE GROUP-CONTAINING POLYMERIC MATERIAL PREPARED BY REACTING OLIGOMERS OR POLYMERIC ORGANIC MATERIALS, WHICH CONTAIN AT LEAST TWO FREE HYDROXYL GROUPS PER MOLECULE, WITH VINYL ISOCYANATE TO A SUBSTRATE IN ADMIXTURE WITH OLEFINICALLY UNSATURATED MONOMERIC COMPOUNDS, SAID OLEFINICALLY UNSATURATED, URETHANE GROUP-CONTAINING POLYMERIC MATERIALS CONTAINING AT LEAST TWO UNITS OF THE FORMULA CH2=CH-NH-COOAND THEREAFTER CURING SAID MATERIAL BY MEANS OF IONIZING RADIATION TO FORM A COATING ON SAID SUBSTRATE.
Claim 2
Dependent Claim
84 words
A PROCESS FOR THE MANUFACTURE OF COATING WHICH COMPRISES: APPLYING A COATING COMPOSITION CONTAINING AN OLEFINICALLY UNSATURATED, URETHANE GROUP-CONTAINING POLYMERIC MATERIAL PREPARED BY REACTING OLIGOMERS OR POLYMERIC ORGANIC MATERIALS, WHICH CONTAIN AT LEAST TWO FREE HYDROXYL GROUPS PER MOLECULE, WITH VINYL ISOCYANATE TO A SUBSTRATE IN ADMIXTURE WITH OLEFINICALLY UNSATURATED MONOMERIC COMPOUNDS, SAID OLEFINICALLY UNSATURATED, URETHANE GROUP-CONTAINING POLYMERIC MATERIALS CONTAINING AT LEAST TWO UNITS OF THE FORMULA CH2=CH-NH-COOAND THEREAFTER CURING SAID MATERIAL BY MEANS OF IONIZING RADIATION TO FORM A COATING ON SAID SUBSTRATE.
Claim 3
Dependent Claim
42 words
A process as set forth in claim 1, wherein the composition used in the preparation of the coatings contains at least one additive of fillers, pigments, inorganic and organic dyes, polymerization inhibitors, polymerization accelerators, plasticizers, flow improvers or natural and synthetic resins.
Claim 4
Dependent Claim
21 words
A process as set forth in claim 1 wherein the substrate to be coated is an article having a metal surface.
Claim 5
Dependent Claim
78 words
A process as set forth in claim 1 wherein the olefinically unsaturated, urethane group-containing polymeric materials have been prepared by reacting vinyl isocyanate with at least one oligomer or polymer containing two free hydroxyl groups per molecule and selected from the group consisting of polyethers, saturated polyesters, unsaturated polyesters and copolymers of allyl alcohol, methallyl alcohol, S-vinylthioethanol, acrylic or methacrylic monoesters of alkanediols, which hydroxyl group-containing oligomers or polymers have a molecular weight of from 500 to 10,000.
Claim 6
Dependent Claim
21 words
A process as set forth in claim 1 wherein the olefinically unsaturated monomeric compounds are vinylaromatic compounds or olefinically unsaturated esters.
Claim 7
Dependent Claim
33 words
A process as set forth in claim 1 wherein the olefinically unsaturated monomeric compounds are esters of acrylic or methacrylic acid with alkanediols or oxy-alkane diols of from two to six carbon atoms.
Claim 8
Dependent Claim
31 words
A process as set forth in claim 1 wherein the ionizing radiation used consists of electron beams which have been produced using an accelerating potential of from 100 to 500 kv.
Claim 9
Dependent Claim
22 words
A process as set forth in claim 1 wherein curing is effected with a radiation dose of from 1 to 50 megarads.
Claim 10
Dependent Claim
21 words
A process as set forth in claim 1 wherein said coating composition has a thickness of from 20 to 500 microns.
Claim 11
Dependent Claim
57 words
An article coated with a composition comprising an olefinically unsaturated, urethane group-containing polymeric material prepared by reacting oligomers or polymeric organic materiaLs, which contain at least two free hydroxyl groups per molecule, with vinyl isocyanate in admixture with olefinically unsaturated monomeric compounds, said olefinically unsaturated, urethane group-containing polymeric materials containing at least two units of the formula,
Claim 12
Dependent Claim
57 words
An article coated with a composition comprising an olefinically unsaturated, urethane group-containing polymeric material prepared by reacting oligomers or polymeric organic materiaLs, which contain at least two free hydroxyl groups per molecule, with vinyl isocyanate in admixture with olefinically unsaturated monomeric compounds, said olefinically unsaturated, urethane group-containing polymeric materials containing at least two units of the formula,
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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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |