US4312798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane coating solutions or dispersions
Assignee: BASF SE
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Filing: 1979-12-10
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Granted: 1982-01-26
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Expires: 1999-12-10
Abstract
Abstract The invention relates to polyurethane coatings prepared from the reaction products of a polyester or polyether, a hydroxyl compound containing acetylenic or ethylenic unsaturation and an organic polyisocyanate.
Inventors
- 👤 Jenoe Kovacs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:57
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/07; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/6715; C08G18/6745; C08K; C08K5/00; C08K5/0008; C08K5/0016; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/302; C08J2375/00; C08J2375/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/31504; Y10T428/31551; Y10T428/31605; Y10T428/31616
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
71 words
A polyurethane solution or dispersion comprising (A) 30-80 percent by weight of a solvent or dispersion agent, and (B) 70-20 percent by weight of the reaction product consisting of (a) 80-10 percent by weight of a polyester or polyether having a hydroxyl number greater than 20 and (b) 5-60 percent by weight of at least one hydroxyl compound containing acetylenic unsaturation and (c) 10-70 percent by weight of an organic polyisocyanate.
Claim 2
Dependent Claim
71 words
A polyurethane solution or dispersion comprising (A) 30-80 percent by weight of a solvent or dispersion agent, and (B) 70-20 percent by weight of the reaction product consisting of (a) 80-10 percent by weight of a polyester or polyether having a hydroxyl number greater than 20 and (b) 5-60 percent by weight of at least one hydroxyl compound containing acetylenic unsaturation and (c) 10-70 percent by weight of an organic polyisocyanate.
Claim 3
Dependent Claim
15 words
The polyurethane solution or dispersion of claim 1 wherein component (A) is a polar solvent.
Claim 4
Dependent Claim
16 words
The polyurethane solution or dispersion of claim 1 wherein component (A) is a non-polar dispersion agent.
Claim 5
Dependent Claim
13 words
The polyurethane solution or dispersion of claim 1 wherein component (A) is water.
Claim 6
Dependent Claim
13 words
The polyurethane solution or dispersion of claim 2 wherein component (A) is water.
Claim 7
Dependent Claim
46 words
The polyurethane solution or dispersion of claim 1 wherein component (B) (a) is a polyester prepared by the reaction of a dicarboxylic acid, and a multifunctional alcohol wherein said polyester has a hydroxyl number from 50 to 600 and a mole weight from 500 to 5000.
Claim 8
Dependent Claim
23 words
The polyurethane solution or dispersion of claim 1 wherein component (B) (a) is a polyether with a hydroxyl number from 25 to 600.
Claim 9
Dependent Claim
29 words
The polyurethane solution or dispersion of claim 1 wherein the component (B) (b) is an aliphatic hydroxyl compound containing acetylenic unsaturation with a hydroxyl number from 200 to 1100.
Claim 10
Dependent Claim
23 words
The polyurethane solution or dispersion of claim 1 wherein component (B) (c) is an organic polyisocyanate having an isocyanate content of 5-60 percent.
Claim 11
Dependent Claim
59 words
A process for the manufacture of the polyurethane solution or dispersion of claim 1 wherein 70-20 percent by weight of the reaction of a mixture of component (B)a and (B)b in component (A) is reacted with component (B)c at a temperature below the boiling point of component (A) and the resulting solution is then mixed with a precipitating agent.
Claim 12
Dependent Claim
46 words
The process for the manufacture of the polyurethane dispersion of claim 1 wherein the component (B) in an inert organic solvent having a boiling point below 150° C. is mixed with water containing dispersing agents and the organic solvent is removed at temperatures below 100° C.
Claim 13
Dependent Claim
24 words
The process for the manufacture of polyurethane dispersions of claim 11 wherein the mixture is subjected to shearing forces while removing the organic solvent.
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) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |