US4801663A
Expired / Lapsed
US
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Isocyanurate polyisocyanate and its use as a curing agent for a two-component polyurethane composition
Assignee: Asahi Kasei Corp
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Filing: 1988-03-29
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Granted: 1989-01-31
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Expires: 2008-03-29
Abstract
Abstract A novel isocyanurate polyisocyanate is disclosed containing N,N',N"-tris(6-isocyanatohexyl)-isocyanurate in an extremely high proportion and having an extremely low viscosity. The novel isocyanurate polyisocyanate is excellent not only in compatibility with a polyol having a low polarity but also in solubility in a solvent having a low polarity as well as in a polar solvent. The novel isocyanurate polyisocyanate is very useful as a curing agent for a two-component polyurethane composition, especially a two-component polyurethane coating composition. The two-component polyurethane coating composition of the present invention is capable of providing a coat film having extremely excellent properties.
Inventors
- 👤 Kaoru Ueyanagi
- 👤 Norio Oyabu
- 👤 Yoshiyuki Asahina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:09
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/34; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1875; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/791; C08G18/792; C08G18/798; C09; C09D; C09D175/00; C09D175/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
81 words
An isocyanurate polyisocyanate comprising: (a) at least 60% by weight, based on the total weight of the components (a), (b) and (c), of N,N',N"-tris(6-isocyanatohexyl)-isocyanurate, (b) from 0 to 10% by weight, based on the total weight of the components (a), (b) and (c), of N,N'-bis(6-isocyanatohexyl)-uretodione, and (c) 40% by weight or less, based on the total weight of the components (a), (b) and (c), of poly(6-isocyanatohexyl)-isocyanurate, said polyisocyanate having a viscosity of 1600 cps or less as measured at 25° C.
Claim 2
Dependent Claim
81 words
An isocyanurate polyisocyanate comprising: (a) at least 60% by weight, based on the total weight of the components (a), (b) and (c), of N,N',N"-tris(6-isocyanatohexyl)-isocyanurate, (b) from 0 to 10% by weight, based on the total weight of the components (a), (b) and (c), of N,N'-bis(6-isocyanatohexyl)-uretodione, and (c) 40% by weight or less, based on the total weight of the components (a), (b) and (c), of poly(6-isocyanatohexyl)-isocyanurate, said polyisocyanate having a viscosity of 1600 cps or less as measured at 25° C.
Claim 3
Dependent Claim
46 words
The isocyanurate polyisocyanate according to claim 1, wherein the weight proportion of N,N',N"-tris(6-isocyanatohexyl)-isocyanurate (a) relative to the components (a), (b) and (c) is from 60 to 95%, and the weight proportion of poly(6-isocyanatohexyl)-isocyanurate relative to the components (a), (b) and (c) is from 5 to 40%.
Claim 4
Dependent Claim
23 words
The isocyanurate polyisocyanate according to claim 1 or 2, having a viscosity of from 400 to 1500 cps as measured at 25° C.
Claim 5
Dependent Claim
23 words
The isocyanurate polyisocyanate according to claim 1 or 2, having a viscosity of from 400 to 1400 cps as measured at 25° C.
Claim 6
Dependent Claim
23 words
The isocyanurate polyisocyanate according to claim 1 or 2, having a viscosity of from 400 to 1300 cps as measured at 25° C.
Claim 7
Independent Claim
131 words
A method for curing a polyol, which comprises mixing a polyol having at least 2 hydroxyl groups with an isocyanurate polyisocyanate comprising: (a) at least 60% by weight, based on the total weight hBbK of the components (a), (b) and (c), of N,N',N"-tris(6-isocyanatohexyl)-isocyanurate, (b) from 0 to 10% by weight, based on the total weight of the components (a), (b) and (c), of N,N'-bis(6-isocyanatohexyl)-uretodione, and (c) 40% by weight or less, based on the total weight of the components (a), (b) and (c), of poly(6-isocyanatohexyl)-isocyanurate, said polyisocyanate having a viscosity of 1600 cps or less as measured at 25° C., said polyisocyanate being employed in an amount such that the equivalent ratio of the isocyanate groups in said polyisocyanate to the hydroxyl groups in said polyol is from 1:5 to 2:1.
Claim 8
Independent Claim
131 words
A method for curing a polyol, which comprises mixing a polyol having at least 2 hydroxyl groups with an isocyanurate polyisocyanate comprising: (a) at least 60% by weight, based on the total weight hBbK of the components (a), (b) and (c), of N,N',N"-tris(6-isocyanatohexyl)-isocyanurate, (b) from 0 to 10% by weight, based on the total weight of the components (a), (b) and (c), of N,N'-bis(6-isocyanatohexyl)-uretodione, and (c) 40% by weight or less, based on the total weight of the components (a), (b) and (c), of poly(6-isocyanatohexyl)-isocyanurate, said polyisocyanate having a viscosity of 1600 cps or less as measured at 25° C., said polyisocyanate being employed in an amount such that the equivalent ratio of the isocyanate groups in said polyisocyanate to the hydroxyl groups in said polyol is from 1:5 to 2:1.
Claim 9
Dependent Claim
45 words
The method according to claim 6, wherein the weight proportion of N,N',N"-tris(6-isocyanatohexyl)-isocyanurate (a) relative to the components (a), (b) and (c) is from 60 to 95%, and the weight proportion of poly(6-isocyanatohexyl)-isocyanurate relative to the components (a), (b) and (c) is from 5 to 40%.
Claim 10
Dependent Claim
26 words
The metod according to claim 6 or 7, wherein said isocyanurate polyisocyanate has a viscosity of from 400 to 1500 cps as measured at 25° C.
Claim 11
Dependent Claim
26 words
The method according to claim 6 or 7, wherein said isocyanurate polyisocyanate has a viscosity of from 400 to 1400 cps as measured at 25° C.
Claim 12
Dependent Claim
26 words
The method according to claim 6 or 7, wherein said isocyanurate polyisocyanate has a viscosity of from 400 to 1300 cps as measured at 25° C.
Claim 13
Dependent Claim
45 words
The method according to claim 6 or 7, wherein said polyol is at least one member selected from the group consisting of an aliphatic hydrocarbon polyol, a polyether polyol, a polyester polyol, a polycarbonate polyol, an epoxy resin, an acrylic polyol and a fluorine-containing polyol.
Claim 14
Dependent Claim
143 words
A two-component polyurethane coating composition comprising: (A) an isocyanurate polyisocyanate comprising: (a) at least 60% by weight, based on the total weight of the components (a), (b) and (c), of N,N',N"-tris(6-isocyanatohexyl)-isocyanurate, (b) from 0 to 10% by weight, based on the total weight of the components (a), (b) and (c), of N,N'-bis(6-isocyanatohexyl)-uretodione, and (c) 40% by weight or less, based on the total weight of the components (a), (b) and (c), of poly(6-isocyanatohexyl)-isocyanurate, said polyisocyanate having a viscosity of 1600 cps or less as measured at 25° C., and (B) a polyol having at least 2 hydroxyl groups in one molecule, wherein the equivalent ratio of the isocyanate groups in the component (A) to the hydroxyl groups in the component (B) is from 1:5 to 2:1 and wherein the components (A) and (B) are separately provided and adapted to be mixed in use.
Claim 15
Dependent Claim
143 words
A two-component polyurethane coating composition comprising: (A) an isocyanurate polyisocyanate comprising: (a) at least 60% by weight, based on the total weight of the components (a), (b) and (c), of N,N',N"-tris(6-isocyanatohexyl)-isocyanurate, (b) from 0 to 10% by weight, based on the total weight of the components (a), (b) and (c), of N,N'-bis(6-isocyanatohexyl)-uretodione, and (c) 40% by weight or less, based on the total weight of the components (a), (b) and (c), of poly(6-isocyanatohexyl)-isocyanurate, said polyisocyanate having a viscosity of 1600 cps or less as measured at 25° C., and (B) a polyol having at least 2 hydroxyl groups in one molecule, wherein the equivalent ratio of the isocyanate groups in the component (A) to the hydroxyl groups in the component (B) is from 1:5 to 2:1 and wherein the components (A) and (B) are separately provided and adapted to be mixed in use.
Claim 16
Dependent Claim
48 words
The two-component polyurethane coating composition according to claim 12, wherein the weight proportion of N,N',N"-tris(6-isocyanatohexyl)-isocyanurate (a) relative to the components (a), (b) and (c) is from 60 to 95%, and the weight proportion of poly(6-isocyanatohexyl)-isocyanurate relative to the components (a), (b) and (c) is from 5 to 40%.
Claim 17
Dependent Claim
29 words
The two-component polyurethane coating composition according to claim 12 or 13, wherein said isocyanurate polyisocyanate has a viscosity of from 400 to 1500 cps as measured at 25° C.
Claim 18
Dependent Claim
29 words
The two-component polyurethane coating composition according to claim 12 or 13, wherein said isocyanurate polyisocyanate has a viscosity of from 400 to 1400 cps as measured at 25° C.
Claim 19
Dependent Claim
29 words
The two-component polyurethane coating composition according to claim 12 or 13, wherein said isocyanurate polyisocyanate has a viscosity of from 400 to 1300 cps as measured at 25° C.
Claim 20
Dependent Claim
46 words
The two-component polyurethane coating composition according to claim 12, wherein said polyol is at least one member selected from the group consisting of an aliphatic hydrocarbon polyol, a polyether polyl, a polyester polyol, a polycarbonate polyol, an epoxy resin, an acrylic polyol and a fluorine-containing polyol.
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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) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |