Paper products containing a biodegradable chemical softening composition
US5312522A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1993 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Jan 14, 2013 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/22
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Fibrous cellulose materials useful in the manufacture of soft, absorbent paper products such as paper towels, facial tissues, and toilet tissue are disclosed. The paper products contain a biodegradable chemical softening composition comprising a mixture of a biodegradable quaternized ester-amine compound and a polyhydroxy compound. Preferred biodegradable quaternized ester-amine compounds include diester dialkyldimethylammonium salts such as the diester ditallow dimethyl ammonium chloride, diester di(touch hydrogenated) tallow dimethyl ammonium chloride and diester di(hydrogenated) tallow dimethyl ammonium chloride. Preferred polyhydroxy compounds are selected from the group consisting of glycerol, and polyethylene glycols and polypropylene glycols having a weight average molecular weight from about 200 to 4000. The biodegradable chemical softening compositions are prepared by first mixing the biodegradable quaternized ester-amine compound into the polyhydroxy compound at a specific temperature range wherein the polyhydroxy compound is miscible with the biodegradable quaternized ester-amine compound and then diluting the mixture with water at an specific temperature and pH range to…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.