US4311622A
Expired / Lapsed
US
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Thixotropic coating composition
Assignee: Akzo NV
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Filing: 1980-01-31
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Granted: 1982-01-19
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Expires: 2000-01-31
Abstract
Abstract A thixotropic coating composition is prepared from a binder and a sag control agent which is the reaction product of a diisocyanate and a monamine or hydroxy monoamine having 1 to 5 aliphatic carbon atoms, the coating composition containing 0.1 to 30 percent by weight of the sag control agent.
Inventors
- 👤 Roelof Buter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:06
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/24; H01R4/2416; H01R4/2445; C; C09; C09D; C09D5/00; C09D5/04; H01R11/00; H01R11/03; H01R11/05; H01R11/09
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
28 words
A thixotropic coating composition containing a binder and 0.1 to 30% by weight of a reaction product of an organic diisocyanate and benzylamine as a sag control agent.
Claim 2
Dependent Claim
28 words
A thixotropic coating composition containing a binder and 0.1 to 30% by weight of a reaction product of an organic diisocyanate and benzylamine as a sag control agent.
Claim 3
Dependent Claim
26 words
The coating composition of claim 1, characterized in that the diisocyanate from which the sag control agent is prepared is a symmetrical aliphatic or cycloaliphatic diisocyanate.
Claim 4
Dependent Claim
13 words
The coating composition of claim 1, characterized in that the diisocyanate is hexamethylene-1,6-diisocyanate.
Claim 5
Dependent Claim
24 words
The coating composition of claim 1, characterized in that the diisocyanate used in the preparation of the sag control agent is an aromatic diisocyanate.
Claim 6
Dependent Claim
14 words
The coating composition of claim 4, characterized in that the diisocyanate is toluene diisocyanate.
Claim 7
Dependent Claim
49 words
The coating composition of claim 1, characterized in that in the reaction mixture for the preparation of the sag control agent the ratio of the number of amino groups of the benzylamine to the number of isocyanate groups of the diisocyanate is in the range of 0.7 to 1.5.
Claim 8
Dependent Claim
52 words
A process for the preparation of a sag control agent for a coating which comprises reacting an organic diisocyanate and benzylamine in the presence of a binder in such a manner that the resulting mixture consists of 30-70% by weight of the sag control agent and 70-30% by weight of a binder.
Claim 9
Dependent Claim
52 words
A process for the preparation of a sag control agent for a coating which comprises reacting an organic diisocyanate and benzylamine in the presence of a binder in such a manner that the resulting mixture consists of 30-70% by weight of the sag control agent and 70-30% by weight of a binder.
Claim 10
Dependent Claim
28 words
The process of claim 7 wherein a mixture made up of 40-60% by weight of the sag control agent and 60-40% by weight of the binder is prepared.
Claim 11
Dependent Claim
9 words
A mixture obtained by the process of claim 7.
Claim 12
Independent Claim
78 words
A method for preventing sagging of a thixotropic coating composition having a solids content of at least 70% by weight without substantially decreasing the gloss of the coating which comprises mixing with the said coating composition from 0.1 to 20 percent by weight based on the weight of said composition of a reaction product of and benzylamine an organic diisocyanate, with the ratio of amino groups to isocyanate groups being 0.7 to 1.5 amine groups per isocyanate group.
Claim 13
Independent Claim
78 words
A method for preventing sagging of a thixotropic coating composition having a solids content of at least 70% by weight without substantially decreasing the gloss of the coating which comprises mixing with the said coating composition from 0.1 to 20 percent by weight based on the weight of said composition of a reaction product of and benzylamine an organic diisocyanate, with the ratio of amino groups to isocyanate groups being 0.7 to 1.5 amine groups per isocyanate group.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-18 | 1985-07-20 | 1986-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-18 | 1989-07-20 | 1990-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-18 | 1993-07-20 | 1994-01-19 | $7700.00 | Window Closed / Lapsed |