Claims
- 1. 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.sub.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.
- 2. 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.
- 3. A process of claim 1 wherein n is 0, y is 2, and z is 0 or 1.
- 4. 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.
- 5. 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.
- 6. 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.
- 7. 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.
- 8. A process of claim 7 wherein the pre-emulsion contains an emulsifier.
- 9. A process of claim 8 wherein the emulsifier is a salt of aliphatic long chain carboxylic acids.
- 10. A process of claim 1 wherein the evaporation-suppressing agents are selected from the group consisting of CH.sub.3 (CH.sub.2).sub.15 OH, CH.sub.3 (CH.sub.2).sub.17 OH, CH.sub.3 (CH.sub.2).sub.19 OH, CH.sub.3 (CH.sub.2).sub.21 OH, CH.sub.3 (CH.sub.2).sub.17 (OCH.sub.2 CH.sub.2).sub.2 OH, CH.sub.3 (CH.sub.2).sub.17 OCH.sub.2 CH(OH)CH.sub.2 OH, CH.sub.3 (CH.sub.2).sub.21 OCH.sub.2 CH.sub.2 OH, CH.sub.3 (CH.sub.2).sub.21 OCH.sub.2 CH.sub.2 CH.sub.2 OH and CH.sub.3 (CH.sub.2).sub.21 OCH.sub.2 CH(OH)CH.sub.2 OH.
- 11. A process of claim 10 wherein the evaporation-suppressing agent is CH.sub.3 (CH.sub.2).sub.19 OH.
- 12. 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.sub.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.
- 13. 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.
- 14. A composition of claim 12 wherein n is 0, y is 2, and z is 0 or 1.
- 15. 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.
- 16. 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.
- 17. 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.
- 18. A composition of claim 12 wherein the evaporation-suppressing agents are selected from the group consisting of CH.sub.3 (CH.sub.2).sub.15 OH, CH.sub.3 (CH.sub.2).sub.17 OH, CH.sub.3 (CH.sub.2).sub.19 OH, CH.sub.3 (CH.sub.2).sub.21 OH, CH.sub.3 (CH.sub.2).sub.17 (OCH.sub.2 CH.sub.2).sub.2 OH, CH.sub.3 (CH.sub.2).sub.17 OCH.sub.2 CH(OH)CH.sub.2 OH, CH.sub.3 (CH.sub.2).sub.21 OCH.sub.2 CH.sub.2 OH, CH.sub.3 (CH.sub.2).sub.21 OCH.sub.2 CH.sub.2 CH.sub.2 OH and CH.sub.3 (CH.sub.2).sub.21 OCH.sub.2 CH(OH)CH.sub.2 OH.
CROSS REFERENCE TO RELATED APPLICATIONS
This is a continuation-in-part of application Ser. No. 750,716, filed June 28, 1985, now abandoned.
US Referenced Citations (2)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
750716 |
Jun 1985 |
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