US4880890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-can thermosetting resin compositions and precoated metal
Assignee: Nippon Steel Corp
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Filing: 1988-05-31
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Granted: 1989-11-14
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Expires: 2008-05-31
Abstract
Abstract A one-can thermosetting resin composition comprising (A) a blocked product of hexamethylene diisocyanate or bis(isocyanatomethyl)cyclohexane, or a blocked product of an adduct of hexamethylene diisocyanate or bis(isocyanatomethyl)cyclohexane and (B) a polyester polyol having at least three functional groups, gives tough coating films in yellowing and thermal degradation, and also exhibits increased hardness as well as high flexibility, stain resistance and chemical resistance. Especially, when the resin composition is used for preparing precoated metals, it gives good steel plates, thus being advantageously utilized for, among others, light electric appliances.
Inventors
- 👤 Shigeaki Miyabayashi
- 👤 Yoshikatsu Matsuura
- 👤 Hiroshi Kanai
- 👤 Joji Oka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:53
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/807; C08G18/8077; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/42; C08G18/4236; C08G18/4238; C08G18/4241; C08G18/73; C08G18/74; C08G18/75; C08G18/751; C08G18/752; C08G18/757; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31605
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
38 words
A one-can thermosetting resin composition comprising (A) a blocked product of hexamethylene diisocyanate or bis(isocyanatomethyl)cyclohexane, or a blocked product of an adduct of hexamethylene diisocyanate or bis(isocyanatomethyl)cyclohexane and (B) a polyester polyol having at least three functional groups.
Claim 2
Dependent Claim
38 words
A one-can thermosetting resin composition comprising (A) a blocked product of hexamethylene diisocyanate or bis(isocyanatomethyl)cyclohexane, or a blocked product of an adduct of hexamethylene diisocyanate or bis(isocyanatomethyl)cyclohexane and (B) a polyester polyol having at least three functional groups.
Claim 3
Dependent Claim
30 words
A resin composition as claimed in claim 1, wherein the polyester polyol (B) has a number-average molecular weight of 600 to 3500 and a hydroxyl value of 40 to 460.
Claim 4
Dependent Claim
31 words
A resin composition as claimed in claim 1, wherein the ratio of the component (A) and the component (B) is 1/2 to 2/1 in terms of OH/regenerated isocyanate groups equivalent ratio.
Claim 5
Dependent Claim
62 words
A resin composition as claimed in claim 1, wherein the blocked product (A) is one prepared by the reaction of 1,3-bis(isocyanato methyl) cyclohexane, a polyesterpolyol prepared by condensation of adipic acid, ethylene glycol, trimethylol propane and dipropylene glycol and methyl ethyl ketoxime and the polyester polyol (B) is one prepared by the reaction of succinic acid with propylene glycol and trimethylol propane.
Claim 6
Dependent Claim
46 words
A resin composition as claimed in claim 1, wherein the polyester polyol (B) is one prepared by the reaction of succinic acid with ethylene glycol and trimethylol propane and the blocked product (A) is one prepared by the reaction of hexamethylene diisocyanate with methyl ethyl ketoxime.
Claim 7
Dependent Claim
63 words
Precoated metal, which is prepared by coating a metal plate with a one-can thermosetting resin composition comprising (A) a blocked product of hexamethylene diisocyanate or bis(isocyanatomethyl)cyclohexane, or a blocked product of an adduct of hexamethylene diisocyanate or bis(isocyanatomethyl)cyclohexane and (B) a polyester polyol having at least three functional groups and heating the thus coated metal plate to cause the coated material to cure.
Claim 8
Dependent Claim
63 words
Precoated metal, which is prepared by coating a metal plate with a one-can thermosetting resin composition comprising (A) a blocked product of hexamethylene diisocyanate or bis(isocyanatomethyl)cyclohexane, or a blocked product of an adduct of hexamethylene diisocyanate or bis(isocyanatomethyl)cyclohexane and (B) a polyester polyol having at least three functional groups and heating the thus coated metal plate to cause the coated material to cure.
Claim 9
Dependent Claim
29 words
Precoated metal as claimed in claim 6, wherein the polyester polyol (B) has a number-average molecular weight of 600 to 3500 and a hydroxyl value of 40 to 460.
Claim 10
Dependent Claim
30 words
Precoated metal as claimed in claim 6, wherein the ratio of the component (A) and the component (B) is 1/2 to 2/1 in terms of OH/regenerated isocyanate groups equivalent ratio.
Claim 11
Dependent Claim
64 words
Precoated metal as claimed in claim 6, wherein the blocked product (A) is one prepared by the reaction of 1,3-bis(isocyanato methyl) cyclohexane, a polyesterpolyol prepared by condensation of a mixture of adipic acid, ethylene glycol, trimethylol propane and dipropylene glycol and methyl ethyl ketoxime and the polyester polyol (B) is one prepared by the reaction of succinic acid with propylene glycol and trimethylol propane.
Claim 12
Dependent Claim
45 words
Precoated metal as claimed in claim 6, wherein the blocked product (A) is one prepared by the reaction of hexamethylene diisocyanate with methyl ethyl ketoxime and the polyester polyol (B) is one prepared by the reaction of succinic acid with ethylene glycol ad trimethylol propane.
Claim 13
Dependent Claim
31 words
Precoated metal as claimed in claim 6, wherein the heat metal temperature is 150° to 350° C. and the heating time is in the range of from 20 to 120 seconds.
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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) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |