Patent US5584178A successfully refreshed from Google Patents.
Patent US5281654A successfully refreshed from Google Patents.
US5281654A
Expired / Lapsed
US
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Polyurethane mixture
Assignee: Rohm and Haas Co
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Filing: 1993-01-14
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Granted: 1994-01-25
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Expires: 2013-01-14
Abstract
Abstract This invention is directed to a polyurethane mixture. More particularly, there is provided a mixture polyurethanes comprising a first polyurethane with at least two end groups, where each end group comprises a terminal isocyanate and a polyether; a second polyurethane with at least two end groups, where each end group comprises a terminal isocyanate group and a non-functional group; and a third polyurethane with at least two end groups, where one end group comprises a terminal isocyanate and a polyether and one other end group comprises a terminal isocyanate and a non-functional group. A method for improving the sag resistance of an aqueous composition is also provided. This method permits the formulation of aqueous compositions which resist the tendency to sag. The polyurethane mixture of this invention is useful for thickening aqueous compositions such as paints, coatings, cosmetics, personal care items, hair shampoos and conditioners, cleaners, and the like.
Inventors
- 👤 Eric K. Eisenhart
- 👤 Paul R. Howard
- 👤 Rodney L. Randow
- 👤 Rafael G. Aviles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:33
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/87; A61Q; A61Q1/00; A61Q1/02; A61Q15/00; A61Q17/00; A61Q17/04; A61Q19/00; A61Q19/10; A61Q5/00; A61Q5/02; A61Q9/00; A61Q9/04; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C09; C09D; C09D7/00; C09D7/40; C09D7/43; A61K2800/00; A61K2800/40; A61K2800/59; A61K2800/594; A61Q5/006; A61Q5/12
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
81 words
A mixture of polyurethanes comprising a first polyurethane with at least two end groups, where each end group comprises a terminal isocyanate and a polyether; a second polyurethane with at least two end groups, where each end group comprises a terminal isocyanate group and a non-functional group; and a third polyurethane with at least two end groups, where one end group comprises a terminal isocyanate and a polyether and one other end group comprises a terminal isocyanate and a nonfunctional group.
Claim 2
Dependent Claim
81 words
A mixture of polyurethanes comprising a first polyurethane with at least two end groups, where each end group comprises a terminal isocyanate and a polyether; a second polyurethane with at least two end groups, where each end group comprises a terminal isocyanate group and a non-functional group; and a third polyurethane with at least two end groups, where one end group comprises a terminal isocyanate and a polyether and one other end group comprises a terminal isocyanate and a nonfunctional group.
Claim 3
Dependent Claim
18 words
An aqueous composition comprising from 0.005 to 20 percent by weight of the polyurethane mixture of claim 1.
Claim 4
Dependent Claim
38 words
A method of improving the sag resistance of an aqueous composition by adding the polurethane mixture of claim 1 to an aqueous composition at a concentration of from 0.005 to 20 percent by weight of the aqueous composition.
Claim 5
Dependent Claim
37 words
A method of increasing the viscosity of an aqueous composition by adding the polyurethane mixture of claim 1 to the aqueous composition at a concentration of from 0.005 to 20 percent by weight of the aqueous composition.
Claim 6
Dependent Claim
16 words
The polyurethane mixture of claim 1 where the polyether is an alkyl or aryl polyether alcohol.
Claim 7
Dependent Claim
19 words
The polyurethane mixture of claim 1 where the polyether is polyethylene glycol methyl ether or polypropylene glycol methyl ether.
Claim 8
Dependent Claim
14 words
The polyurethane mixture of claim 6 where the non-functional group is derived from 1-octadecanol.
Claim 9
Dependent Claim
24 words
The polyurethane mixture of claim 1 where each polyurethane in the mixture is present in an amount ranging from 5 to 90 mole percent.
Claim 10
Dependent Claim
68 words
The polyurethane mixture of claim 1 where the first polyurethane is present in the mixture in an amount ranging from about 8.3 to about 25 mole percent, the second polyurethane is present in the mixture in an amount ranging from about 25 to about 75 mole percent, and the third polyurethane is present in the mixture in an amount ranging from about 16.7 to about 50 mole percent.
Claim 11
Dependent Claim
68 words
The polyurethane mixture of claim 1 where the first polyurethane is present in the mixture in an amount ranging from about 12.5 to about 25 mole percent, the second polyurethane is present in the mixture in an amount ranging from about 25 to about 62.5 mole percent, and the third polyurethane is present in the mixture in an amount ranging from about 25 to about 50 mole percent.
Claim 12
Dependent Claim
8 words
A paint comprising the composition of claim 1.
Claim 13
Dependent Claim
9 words
A hair conditioner comprising the composition of claim 1.
Claim 14
Dependent Claim
9 words
A hair shampoo comprising the composition of claim 1.
Claim 15
Dependent Claim
8 words
An astringent comprising the composition of claim 1.
Claim 16
Dependent Claim
8 words
A depilatory comprising the composition of claim 1.
Claim 17
Dependent Claim
8 words
A sunscreen comprising the composition of claim 1.
Claim 18
Dependent Claim
9 words
A facial make-up comprising the composition of claim 1.
Claim 19
Dependent Claim
13 words
A hand cream or a hand lotion comprising the composition of claim 1.
Claim 20
Dependent Claim
8 words
A cleaner comprising the composition of claim 1.
Claim 21
Dependent Claim
30 words
A polyurethane comprising two end groups, where one end group comprises a terminal isocyanate and a polyether and one other end group comprises a terminal isocyanate and a non-functional group.
Claim 22
Dependent Claim
30 words
A polyurethane comprising two end groups, where one end group comprises a terminal isocyanate and a polyether and one other end group comprises a terminal isocyanate and a non-functional group.
Claim 23
Dependent Claim
15 words
The polyurethane of claim 19 where the polyether is an alkyl or aryl polyether alcohol.
Claim 24
Dependent Claim
18 words
The polyurethane of claim 19 where the polyether is polyethylene glycol methyl ether or polypropylene glycol methyl ether.
Claim 25
Dependent Claim
13 words
The polyurethane of claim 19 where the non-functional group is derived from 1-octadecanol.
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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) | 1997-01-24 | 1997-07-26 | 1998-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-24 | 2001-07-26 | 2002-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-24 | 2005-07-26 | 2006-01-25 | $7700.00 | Window Closed / Lapsed |