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US4528344A
Expired / Lapsed
US
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Low molecular weight resins from nonaromatic polyols and aminoplasts
Assignee: PPG Industries Inc
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Filing: 1984-05-21
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Granted: 1985-07-09
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Expires: 2004-05-21
Abstract
Abstract Disclosed herein is an ungelled, crosslinkable, hydroxyl-group containing resin having a molecular weight of less than 4500. The ungelled, hydroxyl-group containing resin is a reaction product of components comprising (A) a nonaromatic polyol having a molecular weight of less than 230, and (B) an aminoplast. Also disclosed is a curable composition containing such hydroxyl-group containing resin.
Inventors
- 👤 Wen-Hsuan Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:17
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/42; C09; C09D; C09D161/00; C09D161/20; C09D161/32
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
40 words
An ungelled, crosslinkable, hydroxyl group-containing resin having a weight average molecular weight of less than 4500 which is a reaction product of components comprising: (A) a nonaromatic polyol having a molecular weight of less than 230, and (B) an aminoplast.
Claim 2
Dependent Claim
40 words
An ungelled, crosslinkable, hydroxyl group-containing resin having a weight average molecular weight of less than 4500 which is a reaction product of components comprising: (A) a nonaromatic polyol having a molecular weight of less than 230, and (B) an aminoplast.
Claim 3
Dependent Claim
24 words
The resin of claim 1 wherein said aminoplast is at least partially etherified by a monohydric alcohol containing from 1 to 4 carbon atoms.
Claim 4
Dependent Claim
19 words
The resin of claim 1 which is a reaction product of said components additionally comprising a hydroxyl-containing carboxylic acid.
Claim 5
Dependent Claim
15 words
The resin of claim 3 having an acid value equal to or less than 35.
Claim 6
Dependent Claim
34 words
The resin of claim 1 wherein said nonaromatic polyol and said aminoplast for said reaction product are in a ratio of equivalents of said polyol to said aminoplast equal to or less than 2:1.
Claim 7
Dependent Claim
34 words
The resin of claim 1 wherein said nonaromatic polyol and said aminoplast for said reaction product are in a ratio of equivalents of said polyol to said aminoplast equal to or less than 1.5:1.
Claim 8
Dependent Claim
15 words
The resin of claim 1 wherein said nonaromatic polyol contains more than 5 carbon atoms.
Claim 9
Dependent Claim
27 words
The resin of claim 1 wherein said aminoplast is selected from the group consisting of a melamine-aldehyde condensation product, a urea-aldehyde condensation product, and a mixture thereof.
Claim 10
Dependent Claim
15 words
The resin of claim 1 having a weight average molecular weight of less than 3,000.
Claim 11
Dependent Claim
53 words
A curable composition comprising: I. an ungelled, crosslinkable, hydroxyl-group containing resin having a weight average molecular weight of less than 4500 which is a reaction product of components comprising (A) a nonaromatic polyol having a molecular weight of less than 230, and (B) an aminoplast; and II. at least one other crosslinkable resin.
Claim 12
Dependent Claim
53 words
A curable composition comprising: I. an ungelled, crosslinkable, hydroxyl-group containing resin having a weight average molecular weight of less than 4500 which is a reaction product of components comprising (A) a nonaromatic polyol having a molecular weight of less than 230, and (B) an aminoplast; and II. at least one other crosslinkable resin.
Claim 13
Dependent Claim
20 words
The curable composition of claim 10 wherein said other crosslinkable resin is coreactive with said ungelled, crosslinkable, hydroxyl-group containing resin.
Claim 14
Dependent Claim
25 words
The curable composition of claim 10 wherein said aminoplast is at least partially etherified by a monohydric alcohol containing from 1 to 4 carbon atoms.
Claim 15
Dependent Claim
25 words
The curable composition of claim 10 wherein said hydroxyl-group containing resin is a reaction product of said components additionally comprising a hydroxyl-group containing carboxylic acid.
Claim 16
Dependent Claim
35 words
The curable composition of claim 10 wherein said nonaromatic polyol and said aminoplast for said reaction product are in a ratio of equivalents of said polyol to said aminoplast equal to or less than 2/1.
Claim 17
Dependent Claim
35 words
The curable composition of claim 10 wherein said nonaromatic polyol and said aminoplast for said reaction product are in a ratio of equivalents of said polyol to said aminoplast equal to or less than 1.5:1.
Claim 18
Dependent Claim
16 words
The curable composition of claim 10 wherein said nonaromatic polyol contains more than 5 carbon atoms.
Claim 19
Dependent Claim
28 words
The curable composition of claim 10 wherein said aminoplast is selected from the group consisting of a melamine-aldehyde condensation product, a urea-aldehyde condensation product, and a mixture thereof.
Claim 20
Dependent Claim
23 words
The curable composition of claim 10 wherein said ungelled crosslinkable, hydroxyl group-containing resin has a weight average molecular weight of less than 3,000.
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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) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |