Patent US4143181A successfully refreshed from Google Patents.
US4143181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of a coating for glass or ceramic surfaces
Assignee: Francaise Duco SA
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Filing: 1977-07-18
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Granted: 1979-03-06
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Expires: 1997-07-18
Abstract
Abstract Process for the preparation of a coating for glass and ceramic surfaces, comprising applying a first layer of a coating composition consisting of a hydroxylated material selected from hydroxylated polyesters, polyetherpolyols, polycaprolactone-polyols and hydroxylated polyesterdiisocyanate adducts, and of a cross-linking agent; thermally cross-linking said first layer; and applying a surface layer of a coating composition consisting of a film-forming material selected from hydroxylated polyesters, optionally modified epoxy resins and acrylic resins, and of a cross-linking agent; and thermally cross-linking the resulting surface layer.
Inventors
- 👤 Andre Cahn
- 👤 Jacques Sanson
- 👤 Henri Vanspeybroeck
- 👤 Robert Dumas
- 👤 Michel Mosse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:30
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C03; C03C; C03C17/00; C03C17/34; C03C17/3405; C04B41/45; C04B41/46; C04B41/48; C04B41/488; C04B41/80; C04B41/81; C04B41/82; C04B41/83; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/3162; Y10T428/31786; Y10T428/31794; Y10T428/31797
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
90 words
Process for producing a coating on a glass or ceramic surface, comprising applying a first layer of a coating composition consisting of a hydroxylated material selected from the group consisting of hydroxylated polyesters, polycaprolactone-polyols and hydroxylated polyester-diisocyanate adducts, and of a cross-linking agent; thermally cross-linking said first layer; and applying a surface layer of a coating composition consisting of a film-forming material selected from the group consisting of hydroxylated polyesters, epoxy resins, modified epoxy resins and acrylic resins, and of a cross-linking agent; and thermally cross-linking the resulting surface layer.
Claim 2
Dependent Claim
90 words
Process for producing a coating on a glass or ceramic surface, comprising applying a first layer of a coating composition consisting of a hydroxylated material selected from the group consisting of hydroxylated polyesters, polycaprolactone-polyols and hydroxylated polyester-diisocyanate adducts, and of a cross-linking agent; thermally cross-linking said first layer; and applying a surface layer of a coating composition consisting of a film-forming material selected from the group consisting of hydroxylated polyesters, epoxy resins, modified epoxy resins and acrylic resins, and of a cross-linking agent; and thermally cross-linking the resulting surface layer.
Claim 3
Dependent Claim
42 words
Process as claimed in claim 1, wherein the cross-linked hydroxylated component of the first layer exhibits an elongation at break of at least 100%, and the cross-linked film-forming material of the surface layer exhibits an elongation at break of less than 10%.
Claim 4
Dependent Claim
29 words
Process as claimed in claim 1, wherein said cross-linking agent is selected from polyisocyanates, blocked polyisocyanates, polyanhydrides, melamines, amines, amides, imidazolines, imidazoles, epoxides, olefinically unsaturated monomers and carboxylated polyesters.
Claim 5
Dependent Claim
30 words
Process as claimed in claim 1, wherein the coating compositions for the surface layer and the first layer are applied as solutions in organic solvents or in dry powder form.
Claim 6
Dependent Claim
35 words
Process as claimed in claim 4, wherein the coating composition for the first layer is applied from solutions in organic solvents and the coating composition for the surface layer is applied in dry powder form.
Claim 7
Dependent Claim
26 words
Process as claimed in claim 1, wherein the surface layer and the first layer are applied in a thickness of 20-80 microns, preferably of 30-60 microns.
Claim 8
Dependent Claim
26 words
Process as claimed in claim 1, wherein the first layer consists of a polyester obtained from neopentylglycol, trimethylolpropane and azelaic acid, cross-linked with 1,6-hexamethylene diisocyanate biuret.
Claim 9
Dependent Claim
28 words
Process as claimed in claim 1, wherein the first layer consists of a polyester obtained from neopentylglycol, trimethylolpropane, isophthalic acid and adipic acid, cross-linked with 1,6-hexamethylene diisocyanate biuret.
Claim 10
Dependent Claim
28 words
Process as claimed in claim 1, wherein the first layer consists of a polyester obtained from neopentylglycol, trimethylolpropane, isophthalic acid and azelaic acid, cross-linked with 1,6-hexamethylene diisocyanate biuret.
Claim 11
Dependent Claim
30 words
Process as claimed in claim 1, wherein the first layer consists of a hydroxylated polyester-polyisocyanate adduct obtained from polycaprolactone, polyethylene glycol, trimethylolpropane and isophorone diisocyanate, cross-linked with 1,6-hexamethylene diisocyanate biuret.
Claim 12
Dependent Claim
28 words
Process as claimed in claim 1, wherein the first layer consists of a hydroxylated polyester obtained from polycaprolactone-diol, trimethylolpropane and azelaic acid, cross-linked with an isophorone diisocyanate polyisocyanate.
Claim 13
Dependent Claim
36 words
Process as claimed in claim 1, wherein the the surface layer consists of a saturated polyester resin based on terephthalic acid, 1,1-isopropylene-bis-(paraphenyleneoxy)diethanol and neopentylglycol, cross-linked with a blocked isocyanate based on isophorone diisocyanate, diethyleneglycol and caprolactame.
Claim 14
Dependent Claim
30 words
Process as claimed in claim 1 wherein the surface layer consists of an epoxy resin obtained from Bisphenol A and epichlorohydrin, having a molecular weight of 1000-2000, cross-linked with 2-phenylimidazoline.
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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) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |