Patent US2994031A successfully refreshed from Google Patents.
US4154891A
Expired / Lapsed
US
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Novel thermosetting resinous compositions
Assignee: PPG Industries Inc
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Filing: 1977-03-07
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Granted: 1979-05-15
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Expires: 1997-03-07
Abstract
Abstract Novel thermosetting resinous compositions are disclosed. The compositions comprise the reaction product of a polymeric polyol having a cured glass transition temperature less than 20° C. with a substantial stoichiometric excess of an aminoplast curative. The cured compositions are hard with good durability and surprising flexibility for such high aminoplast loadings. These compositions are particularly useful as coatings for resilient and rubbery substrates such as foam rubber, polyurethane foam and vinyl foam and on soft metal surfaces such as mild steel and aluminum.
Inventors
- 👤 Samuel Porter, Jr.
- 👤 Roger L. Scriven
- 👤 Wen-Hsuan Chang
- 👤 James B. O'Dwyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:28
CPC Classifications
C; C09; C09D; C09D175/00; C09D175/04; C09D133/00; C09D133/04; C09D133/14; C09D161/00; C09D161/20; C09D201/00; C09D201/02; C09D201/06; C08; C08L; C08L61/00; C08L61/20; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/31504; Y10T428/31942
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
121 words
A thermosetting resinous composition which, when applied to a substrate and cured, produces a hard, durable, flexible coating; comprising a compatible reaction mixture of: (A) a polyol component containing at least 25 percent of a non-gelled polymeric polyol selected from the class including mixtures thereof consisting of polyester polyols, polyether polyols and polyurethane polyols said non-gelled polymeric polyol having a hydroxyl value of less than 50 and a cured glass transition temperature less than 0° C., (b) at least a 1000 percent stoichiometric excess of an amine-aldehyde condensate based on total equivalents of polyol, said amine-aldehyde condensate being present in said resinous composition in an amount of 35 to 60 percent by weight based on total weight of (A) and (B).
Claim 2
Dependent Claim
121 words
A thermosetting resinous composition which, when applied to a substrate and cured, produces a hard, durable, flexible coating; comprising a compatible reaction mixture of: (A) a polyol component containing at least 25 percent of a non-gelled polymeric polyol selected from the class including mixtures thereof consisting of polyester polyols, polyether polyols and polyurethane polyols said non-gelled polymeric polyol having a hydroxyl value of less than 50 and a cured glass transition temperature less than 0° C., (b) at least a 1000 percent stoichiometric excess of an amine-aldehyde condensate based on total equivalents of polyol, said amine-aldehyde condensate being present in said resinous composition in an amount of 35 to 60 percent by weight based on total weight of (A) and (B).
Claim 3
Dependent Claim
22 words
The thermosetting resinous composition of claim 1 in which the polymeric polyol has a cured T g of less than -20° C.
Claim 4
Dependent Claim
22 words
The thermosetting resinous composition of claim 1 in which the amine-aldehyde condensate is present in at least a 1500 percent stoichiometric excess.
Claim 5
Dependent Claim
15 words
The thermosetting resinous composition of claim 1 in which the polyol component contains water-solubilizing groups.
Claim 6
Dependent Claim
15 words
The thermosetting resinous composition of claim 1 in which the amine-aldehyde condensate contains alkanol groups.
Claim 7
Dependent Claim
19 words
The thermosetting resinous composition of claim 5 in which the amine-aldehyde condensate is a condensate of melamine and formaldehyde.
Claim 8
Dependent Claim
100 words
A thermosetting resinous composition which, when applied to a substrate and cured, produces a hard, durable, flexible coating; comprising a compatible reaction mixture of: (A) a polyol component containing at least 50 percent of a non-gelled polyurethane polyol having a cured glass transition temperature less than 0° C. and a hydroxyl value less than 50, (B) at least a 1000 percent stoichiometric excess of an amine-aldehyde condensate based on total equivalents of polyol, said amine-aldehyde condensate being present in said resinous composition in an amount of 35 to 60 percent by weight based on total weight of (A) and (B).
Claim 9
Dependent Claim
100 words
A thermosetting resinous composition which, when applied to a substrate and cured, produces a hard, durable, flexible coating; comprising a compatible reaction mixture of: (A) a polyol component containing at least 50 percent of a non-gelled polyurethane polyol having a cured glass transition temperature less than 0° C. and a hydroxyl value less than 50, (B) at least a 1000 percent stoichiometric excess of an amine-aldehyde condensate based on total equivalents of polyol, said amine-aldehyde condensate being present in said resinous composition in an amount of 35 to 60 percent by weight based on total weight of (A) and (B).
Claim 10
Dependent Claim
29 words
A coated article comprising: (A) a substrate, and (B) a cured resinous coating adhered thereto; the cured resin comprising the reaction product of the resinous composition of claim 1.
Claim 11
Dependent Claim
29 words
A coated article comprising: (A) a substrate, and (B) a cured resinous coating adhered thereto; the cured resin comprising the reaction product of the resinous composition of claim 7.
Claim 12
Dependent Claim
18 words
The coated article of claim 8 in which the coating has a thickness of 0.1 to 5 mils.
Claim 13
Dependent Claim
24 words
The coated article of claim 8 in which the substrate is selected from the class consisting of wood, metals, glass, cloth, plastics and foams.
Claim 14
Dependent Claim
12 words
The coated article of claim 8 in which the coating is pigmented.
Claim 15
Dependent Claim
37 words
A paint composition comprising: (A) the thermosetting resinous composition of claim 1, (B) a pigment, (C) a liquid vehicle present in an amount sufficient to provide the paint composition with a sufficiently low viscosity for coating applications.
Claim 16
Dependent Claim
37 words
A paint composition comprising: (A) the thermosetting resinous composition of claim 7, (B) a pigment, (C) a liquid vehicle present in an amount sufficient to provide the paint composition with a sufficiently low viscosity for coating applications.
Claim 17
Dependent Claim
19 words
The composition of claim 13 in which the pigment-to-resin weight ratio is within the range of 0.05 to 1.5:1.
Claim 18
Dependent Claim
23 words
The composition of claim 13 in which the polyol component of the resinous composition contains water-solubilizing groups and the liquid vehicle contains water.
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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) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |