US4478894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-pack type thermosetting polyurethane coating composition
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1982-11-29
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Granted: 1984-10-23
•
Expires: 2002-11-29
Abstract
Abstract Disclosed are a thermosetting polyurethane coating composition of one-pack type which comprises a product obtained by reacting (i) an isocyanate component having at least one oxadiazinetrione ring obtained by the reaction of bis(isocyanatomethyl)cyclohexane with carbon dioxide with (ii) a polyol component having a molecular weight of 400 to 50,000 at such a proportion as satisfying the relations: the number of hydroxyl group > the number of free isocyanate group and the number of oxadiazinetrione ring/(the number of hydroxyl group--the number of free isocyanate group)=0.1 to 10 and a process for producing the coating composition. The composition has excellent storage stability and the cured coatings have no problems of yellowing and pin-holes and are excellent in mechanical properties, chemical resistance and weather resistance.
Inventors
- 👤 Michio Tanaka
- 👤 Yoshio Kamatani
- 👤 Koji Nasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:21
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/7875; C08G18/7887; C08G18/701; C08G18/74; C08G18/75; C08G18/751; C08G18/752; C08G18/757
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
A thermosetting polyurethane coating composition of one-pack type which comprises a product obtained by reacting (i) an isocyanate component having at least one oxidiazinetrione ring obtained by the reaction of bis(isocyanatomethyl)cyclohexane with carbon dioxide with (ii) a polyol component having a molecular weight of 400 to 50,000 at such a proportion as satisfying the relations: the number of hydroxyl group>the number of free isocyanate group and the number of oxadiazinetrione ring/(the number of hydroxyl group--the number of free isocyanate group)=0.6 to 1.6; said polyol component (ii) being a polyester polyol, a polyurethane polyol, an acrylic polyol or an epoxy polyol.
Claim 2
Dependent Claim
100 words
A thermosetting polyurethane coating composition of one-pack type which comprises a product obtained by reacting (i) an isocyanate component having at least one oxidiazinetrione ring obtained by the reaction of bis(isocyanatomethyl)cyclohexane with carbon dioxide with (ii) a polyol component having a molecular weight of 400 to 50,000 at such a proportion as satisfying the relations: the number of hydroxyl group>the number of free isocyanate group and the number of oxadiazinetrione ring/(the number of hydroxyl group--the number of free isocyanate group)=0.6 to 1.6; said polyol component (ii) being a polyester polyol, a polyurethane polyol, an acrylic polyol or an epoxy polyol.
Claim 3
Dependent Claim
19 words
A thermosetting polyurethane coating composition according to claim 1, wherein the bis(isocyanatomethyl)cyclohexane is 1,3-bis(isocyanatomethyl)cyclohexane, 1,4-bis(isocyanatomethyl)cyclohexane or a mixture thereof.
Claim 4
Dependent Claim
19 words
A thermosetting polyurethane coating composition according to claim 1, wherein the isocyanate component has 1 to 5 oxadiazinetrione rings.
Claim 5
Dependent Claim
35 words
A thermosetting polyurethane coating composition according to claim 1, wherein the polyol component (ii) is a compound having 2 to 50 hydroxyl groups in one molecule and having a molecular weight of 500 to 30,000.
Claim 6
Dependent Claim
100 words
A process for producing a thermosetting polyurethane coating composition of one-pack type, which comprises reacting (i) an isocyanate component having at least one oxadiazinetrione ring obtained by the reaction of bis(isocyanatomethyl)cyclohexane with carbon dioxide with (ii) a polyol component having a molecular weight of 400 to 50,000 at such a proportion as satisfying the relations: the number of hydroxyl group>the number of free isocyanate group and the number of oxadiazinetrione ring/(the number of hydroxyl group--the number of free isocyanate group)=0.6 to 1.6; said polyol component (ii) being a polyester polyol, a polyurethane polyol, an acrylic polyol or an epoxy polyol.
Claim 7
Dependent Claim
100 words
A process for producing a thermosetting polyurethane coating composition of one-pack type, which comprises reacting (i) an isocyanate component having at least one oxadiazinetrione ring obtained by the reaction of bis(isocyanatomethyl)cyclohexane with carbon dioxide with (ii) a polyol component having a molecular weight of 400 to 50,000 at such a proportion as satisfying the relations: the number of hydroxyl group>the number of free isocyanate group and the number of oxadiazinetrione ring/(the number of hydroxyl group--the number of free isocyanate group)=0.6 to 1.6; said polyol component (ii) being a polyester polyol, a polyurethane polyol, an acrylic polyol or an epoxy polyol.
Claim 8
Dependent Claim
122 words
A coating process which comprises coating on a surface to be coated a composition comprising a product obtained by reacting (i) an isocyanate component having at least one oxadiazinetrione ring obtained by the reaction of bis(isocyanatomethyl)cyclohexane with carbon dioxide with (ii) a polyol component having a molecular weight of 400 to 50,000 at such a proportion as satisfying the relations: the number of hydroxyl group>the number of free isocyanate group and the number of oxadiazinetrione ring/(the number of hydroxyl group--the number of free isocyanate group)=0.6 to 1.6 and baking the coated composition at about 100° to 150° C. for about 1 to 30 minutes; said polyol component (ii) being a polyester polyol, a polyurethane polyol, an acrylic polyol or an epoxy polyol.
Claim 9
Dependent Claim
122 words
A coating process which comprises coating on a surface to be coated a composition comprising a product obtained by reacting (i) an isocyanate component having at least one oxadiazinetrione ring obtained by the reaction of bis(isocyanatomethyl)cyclohexane with carbon dioxide with (ii) a polyol component having a molecular weight of 400 to 50,000 at such a proportion as satisfying the relations: the number of hydroxyl group>the number of free isocyanate group and the number of oxadiazinetrione ring/(the number of hydroxyl group--the number of free isocyanate group)=0.6 to 1.6 and baking the coated composition at about 100° to 150° C. for about 1 to 30 minutes; said polyol component (ii) being a polyester polyol, a polyurethane polyol, an acrylic polyol or an epoxy polyol.
Claim 10
Dependent Claim
18 words
A thermosetting polyurethane coating composition according to claim 1, wherein the polyol component (ii) is an acrylic polyol.
Claim 11
Dependent Claim
15 words
A process according to claim 5, wherein the polyol component (ii) is an acrylic polyol.
Claim 12
Dependent Claim
16 words
A coating process according to claim 6, wherein the polyol component (ii) is an acrylic polyol.
References Cited (Backward Citations)
GB1145952A
Cited
US3730953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |