US4647610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous polymer compositions containing surface-active evaporation suppressants
Assignee: Rohm and Haas Co
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Filing: 1986-03-31
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Granted: 1987-03-03
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Expires: 2006-03-31
Abstract
Abstract Low levels of surface-active, aliphatic C16 or greater hydrocarbon-type compounds are used to reduce the rate of evaporation of water from waterborne polymer products such as latex coatings. This increases the wet-edge or open time of the freshly applied coating, improves integrity and adhesion of the dried coating, and reduces skin formation in containers and on application equipment.
Inventors
- 👤 Peter R. Sperry
- 👤 Chao-Jen Chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:48
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/02; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/05; C08K5/06; C09D5/024; C09D7/00; C09D7/40; C09D7/46
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
112 words
A process for reducing the evaporation rate of water from aqueous-based polymer compositions to retard skin formation and to extend wet-edge time comprising uniformly adding to said aqueous-based polymer compositions a low level of one or more surface active, aliphatic evaporation-suppressing agents consisting of a saturated, unbranched carbon-carbon chain length of about 16 to about 24 carbon atoms and containing one or more hydrophilic groups selected from ##STR3## wherein X is --H or --CH 3 ; n is an integer from 0 to 2; y is an integer from 1 to about 4; z is an integer from 0 to 2; and the sum of n and z does not exceed 2.
Claim 2
Dependent Claim
112 words
A process for reducing the evaporation rate of water from aqueous-based polymer compositions to retard skin formation and to extend wet-edge time comprising uniformly adding to said aqueous-based polymer compositions a low level of one or more surface active, aliphatic evaporation-suppressing agents consisting of a saturated, unbranched carbon-carbon chain length of about 16 to about 24 carbon atoms and containing one or more hydrophilic groups selected from ##STR3## wherein X is --H or --CH 3 ; n is an integer from 0 to 2; y is an integer from 1 to about 4; z is an integer from 0 to 2; and the sum of n and z does not exceed 2.
Claim 3
Dependent Claim
32 words
A process of claim 1 wherein (i) n is 0, y is 2 or 3, and z is 0 or 1, or (ii) n is 1 or 2 and z is 0.
Claim 4
Dependent Claim
18 words
A process of claim 1 wherein n is 0, y is 2, and z is 0 or 1.
Claim 5
Dependent Claim
29 words
A process of claim 1 wherein the level of said evaporation-suppressing agents is about 5% by weight or less based on the total weight of the aqueous polymer composition.
Claim 6
Dependent Claim
29 words
A process of claim 1 wherein the level of said evaporation-suppressing agents is about 1% by weight or less based on the total weight of the aqueous polymer composition.
Claim 7
Dependent Claim
27 words
A process of claim 1 wherein the aqueous polymer composition is selected from the group consisting of acrylic, styrene acrylic, styrene butadiene, and vinyl acetate polymeric latexes.
Claim 8
Dependent Claim
30 words
A process of claim 1 wherein the evaporation suppressing agents are added to the aqueous polymer composition as a pre-emulsion in water or as a solution in an organic solvent.
Claim 9
Dependent Claim
11 words
A process of claim 7 wherein the pre-emulsion contains an emulsifier.
Claim 10
Dependent Claim
17 words
A process of claim 8 wherein the emulsifier is a salt of aliphatic long chain carboxylic acids.
Claim 11
Dependent Claim
104 words
A process of claim 1 wherein the evaporation-suppressing agents are selected from the group consisting of CH 3 (CH 2 ) 15 OH, CH 3 (CH 2 ) 17 OH, CH 3 (CH 2 ) 19 OH, CH 3 (CH 2 ) 21 OH, CH 3 (CH 2 ) 17 (OCH 2 CH 2 ) 2 OH, CH 3 (CH 2 ) 17 OCH 2 CH(OH)CH 2 OH, CH 3 (CH 2 ) 21 OCH 2 CH 2 OH, CH 3 (CH 2 ) 21 OCH 2 CH 2 CH 2 OH and CH 3 (CH 2 ) 21 OCH 2 CH(OH)CH 2 OH.
Claim 12
Dependent Claim
17 words
A process of claim 10 wherein the evaporation-suppressing agent is CH 3 (CH 2 ) 19 OH.
Claim 13
Dependent Claim
95 words
A composition of matter comprising a uniform mixture of an aqueous-based polymer product and a low level of one or more surface active, aliphatic evaporation-suppressing agents consisting of a saturated, unbranched carbon-carbon chain length of about 16 to about 24 carbon atoms and one or more hydrophilic groups selected from ##STR4## wherein X is --H or --CH 3 ; n is an integer from 0 to 2; y is an integer from 1 to about 4; z is an integer from 0 to 2; and the sum of n and z does not exceed 2.
Claim 14
Dependent Claim
95 words
A composition of matter comprising a uniform mixture of an aqueous-based polymer product and a low level of one or more surface active, aliphatic evaporation-suppressing agents consisting of a saturated, unbranched carbon-carbon chain length of about 16 to about 24 carbon atoms and one or more hydrophilic groups selected from ##STR4## wherein X is --H or --CH 3 ; n is an integer from 0 to 2; y is an integer from 1 to about 4; z is an integer from 0 to 2; and the sum of n and z does not exceed 2.
Claim 15
Dependent Claim
32 words
A composition of claim 12 wherein (i) n is 0, y is 2 or 3, and z is 0 or 1, or (ii) n is 1 or 2 and z is 0.
Claim 16
Dependent Claim
18 words
A composition of claim 12 wherein n is 0, y is 2, and z is 0 or 1.
Claim 17
Dependent Claim
29 words
A composition of claim 12 wherein the level of said evaporation-suppressing agents is about 5% by weight or less based on the total weight of the aqueous polymer composition.
Claim 18
Dependent Claim
29 words
A composition of claim 12 wherein the level of said evaporation-suppressing agents is about 1% by weight or less based on the total weight of the aqueous polymer composition.
Claim 19
Dependent Claim
27 words
A composition of claim 12 wherein the aqueous polymer product is selected from the group consisting of acrylic, styrene acrylic, styrene butadiene, and vinyl acetate polymeric latexes.
Claim 20
Dependent Claim
104 words
A composition of claim 12 wherein the evaporation-suppressing agents are selected from the group consisting of CH 3 (CH 2 ) 15 OH, CH 3 (CH 2 ) 17 OH, CH 3 (CH 2 ) 19 OH, CH 3 (CH 2 ) 21 OH, CH 3 (CH 2 ) 17 (OCH 2 CH 2 ) 2 OH, CH 3 (CH 2 ) 17 OCH 2 CH(OH)CH 2 OH, CH 3 (CH 2 ) 21 OCH 2 CH 2 OH, CH 3 (CH 2 ) 21 OCH 2 CH 2 CH 2 OH and CH 3 (CH 2 ) 21 OCH 2 CH(OH)CH 2 OH.
References Cited (Backward Citations)
US3553123A
Cited
US4393151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |