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EP0102566A1
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Beta-hydroxy urethane low temperature curing agents
Assignee: PPG Industries Inc
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Filing: 1983-08-17
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Granted: —
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Expires: 2003-08-17
Abstract
Abstract A curable composition, comprising a beta-hydroxy urethane which is particularly useful as a crosslinking agent which affords relatively low temperature cure, is provided.
Inventors
- 👤 Joseph Theodore Valko
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 05:39
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4488; C09D5/4496; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814; C08G18/28; C08G18/40; C08G18/58; C08G18/584; C08G18/64; C08G18/6415; C08G18/643; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8009; C08K; C08K5/00; C08K5/0008; C08K5/0025; C08L; C08L63/00; C09D5/4419; C09D5/443; C09D5/4453
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
18 words
A curable composition comprising: (i) an active hydrogen-containing material, (ii) a beta-hydroxy urethane, and (iii) a cure catalyst.
Claim 2
Dependent Claim
18 words
A curable composition comprising: (i) an active hydrogen-containing material, (ii) a beta-hydroxy urethane, and (iii) a cure catalyst.
Claim 3
Dependent Claim
24 words
The composition of Claim 1, in which the active hydrogen-containing material is an epoxy group-containing polymer or is derived from an epoxy group-containing polymer.
Claim 4
Dependent Claim
23 words
The composition of Claim 2, in which the active hydrogen-containing material is a reaction product of an epoxy group-containing polymer and an amine.
Claim 5
Dependent Claim
53 words
The composition of Claim 1, wherein the beta-hydroxy urethane is a reaction product of: (a) an isocyanato compound or polymer, and (b) a blocking agent which is a 1,2-polyol; wherein the equivalent ratio of -NCO groups of the isocyanato compound or polymer to -0H groups of the 1,2-polyol is about 1:1.5 to 1:2.
Claim 6
Dependent Claim
15 words
A composition of Claim 4, wherein the isocyanato compound or polymer is an aromatic isocyanate.
Claim 7
Dependent Claim
19 words
The composition of Claim 4, wherein the 1,2-polyol is ethylene glycol, propylene glycol, 1,2-butanediol or hydrolyzed butyl glycidyl ether.
Claim 8
Dependent Claim
14 words
The composition of Claim 6, wherein the 1,2-polyol is a hydrolyzed n-butyl glycidyl ether.
Claim 9
Dependent Claim
24 words
The composition of Claim 4, wherein the blocking agent comprises a combination of a 1,2-polyol and a conventional blocking agent which is a monoalcohol.
Claim 10
Dependent Claim
19 words
The composition of Claim 1, wherein the cure catalyst is a metal salt or complex comprising tin or lead.
Claim 11
Dependent Claim
13 words
The composition of Claim 1, which is an aqueous dispersion containing cationic groups.
Claim 12
Dependent Claim
19 words
The composition of Claim 10, in which the cationic groups comprise amine salt groups or quaternary ammonium base groups.
Claim 13
Dependent Claim
37 words
A process for providing a protective or decorative coating for a substrate, comprising: (1) applying to the substrate a coating composition comprising: (a) a beta-hydroxy urethane, (b) a cure catalyst, and optionally (c) an active hydrogen-containing material.
Claim 14
Dependent Claim
37 words
A process for providing a protective or decorative coating for a substrate, comprising: (1) applying to the substrate a coating composition comprising: (a) a beta-hydroxy urethane, (b) a cure catalyst, and optionally (c) an active hydrogen-containing material.
Claim 15
Independent Claim
62 words
A method of electrocoating an electrically conductive surface serving as a cathode in an electrical circuit comprising said cathode, an anode and an aqueous electrodepositable composition, by passing an electric current between said anode and said cathode, wherein the aqueous electrodepositable composition comprises an aqueous dispersion of: (a) a beta-hydroxy urethane, (b) a cure catalyst, and optionally (c) an active hydrogen-containing material.
Claim 16
Independent Claim
62 words
A method of electrocoating an electrically conductive surface serving as a cathode in an electrical circuit comprising said cathode, an anode and an aqueous electrodepositable composition, by passing an electric current between said anode and said cathode, wherein the aqueous electrodepositable composition comprises an aqueous dispersion of: (a) a beta-hydroxy urethane, (b) a cure catalyst, and optionally (c) an active hydrogen-containing material.
Claim 17
Dependent Claim
22 words
A method as in Claim 12 or 13, followed by baking the coated substrate at a temperature of about 275°F. to 325°F.
References Cited (Backward Citations)
FR2211542A1
Cited
FR2305514A2
Cited
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