Method for producing free-flowing, water-soluble polymer gels
US4904715A · kind A · utility
5Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Aug 11, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/916
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The instant invention is directed to a method for preparing free-flowing, water-soluble polymer gels comprising: PA0 (a) reducing the size of water-soluble polymer gels by a size-reduction means, so as to produce polymer gel particles which are less than 1/2 inch in their longest dimension; and PA0 (b) adding to the size-reduced polymer gels of Step (a) 0.001 to 20 percent, by weight, of an amphipathic compound, thereby reducing the adhesion of said gel particles to themselves and other substances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.