Method of sizing hydrophobic yarn
US4448839A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1981 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Oct 20, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2402
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of sizing a hydrophobic yarn for weaving comprising the steps of applying thereto an acid pH latex of a free radical initiated vinyl polymer and drying the yarn. The polymer has a weight average molecular weight of from about 300,000 to about 2,500,000, and in dried film form is hydrophobic, not redispersible in a solution at a low pH and redispersible in an alkaline aqueous medium. The polymer is prepared from monomers comprising about 8% to about 14%, by weight ethylenically unsaturated acid. The average solubility parameter of the monomers in the polymer is between about 9.0 and about 9.5; the calculated polymer T.sub.g is between about -20.degree. C. and 20.degree. C. Preferred yarns are nylon and polyester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.