Waxless polyvinyl alcohol size composition
US4845140A · kind A · utility
4Cited by
13References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1988 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Mar 11, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M15/333
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An aqueous waxless size composition for textile yarn comprising in an aqueous solution PA1 (a) 100 parts polyvinyl alcohol and PA1 (b) 2-6 parts ethylene oxide-propylene oxide surfactant which has a surface tension less than 49 dynes/cm, preferably between about 40 to 48 dynes/cm, as a 0.1% aqueous solution at 25.degree. C., and desirably a foaming number less than about 20 (ml foam/g solution).degree.F. as a 7% aqueous polyvinyl alcohol solution containing 4 parts surfactant per 100 parts polyvinyl alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.