US4465713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethane coatings from aliphatic aromatic diisocyanates
Assignee: Dow Chemical Co
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Filing: 1982-09-20
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Granted: 1984-08-14
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Expires: 2002-09-20
Abstract
Abstract A surface is coated with a mixture of (i) an aliphatic, aromatic polyisocyanate such as 1,3-bis-(1-isocyanato-1-methylethyl)benzene, and (ii) a polyactive hydrogen compound such as a poly(2-hydroxyethylacrylate), and the mixture is cured under conditions such that an adherent, solid coating is formed on the surface. The coatings of the invention have surprising gloss and lack of yellowness after exposure to ultra-violet light.
Inventors
- 👤 Michele R. Lock
- 👤 Kurt C. Frisch, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:16
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7614; C08G18/7628; C08G18/765; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C08G18/6229
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
126 words
A method for coating a surface with improved gloss and nonyellowing characteristics consisting of a. applying to a surface, a mixture comprising (i) a first component according to the formula ##STR3## wherein A is an organic radical including at least one aromatic ring; each R 1 is independently an aliphatic radical; each n is independently 0 or 1; and each R 2 is independently an organic or inorganic radical selected from the group consisting of a halogen and an aliphatic radical having from one to six carbon atoms, and (ii) a second component comprising a polyahl; and b. curing the mixture; the ratio of the first component and second component, and the curing step being such that an adherent, solid coating is formed on said surface.
Claim 2
Independent Claim
126 words
A method for coating a surface with improved gloss and nonyellowing characteristics consisting of a. applying to a surface, a mixture comprising (i) a first component according to the formula ##STR3## wherein A is an organic radical including at least one aromatic ring; each R 1 is independently an aliphatic radical; each n is independently 0 or 1; and each R 2 is independently an organic or inorganic radical selected from the group consisting of a halogen and an aliphatic radical having from one to six carbon atoms, and (ii) a second component comprising a polyahl; and b. curing the mixture; the ratio of the first component and second component, and the curing step being such that an adherent, solid coating is formed on said surface.
Claim 3
Dependent Claim
54 words
The method of claim 1 wherein A is an aromatic ring having from 6 to 12 members forming the ring; each R 1 is independently an aliphatic radical having from 1 to 6 carbon atoms; and each R 2 is independently, a halogen, or an aliphatic radical having from 1 to 6 carbon atoms.
Claim 4
Dependent Claim
47 words
The method of claim 2 wherein A is an aromatic ring having 6 carbon atoms forming the ring; each R 1 is independently an aliphatic radical having 1 to 3 carbon atoms; and each R 2 is independently an aliphatic radical having 1 to 3 carbon atoms.
Claim 5
Dependent Claim
18 words
The method of claim 3 wherein every n is 0; and every R 2 is a methyl radical.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein the second component is a polyol.
Claim 7
Dependent Claim
12 words
The method of claim 5 wherein the polyol is a glycol ether.
Claim 8
Dependent Claim
19 words
The method of claim 5 wherein the polyol is an addition polymer of a hydroxy functional addition polymerizable monomer.
Claim 9
Dependent Claim
23 words
The method of claim 7 wherein the polyol is an addition polymer of a hydroxy functional ester of an ethylenically unsaturated carboxylic acid.
Claim 10
Dependent Claim
17 words
The method of claim 1 wherein the mixture additionally comprises a catalytic amount of a urethane catalyst.
Claim 11
Dependent Claim
16 words
A coated surface produce by the method of claim 1, 2, 4, 5, 8 or 9.
References Cited (Backward Citations)
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US4104432A
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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) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |