Non-inflammable filaments comprising acrylonitrile/vinylidene chloride copolymers
US3963790A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1974 |
| Grant date | Jun 15, 1976 |
| Priority date | — |
| Expiry date | Sep 3, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S260/24
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Non-inflammable filaments having good physical characteristics are disclosed, wherein the filaments have a chlorine content of 25-40% by weight and a sticking temperature of at least 215.degree.C, and a shrinkage of less than 32% when subjected to steam at 130.degree.C in the free or unrestrained state. The filaments are formed by spinning a mixture of incompatible polymers, one polymer, used in an amount of 50-99% by weight, containing 79.5 to 58 weight percent of acrylonitrile units, 20-40 weight percent of vinylidene chloride units and 0.5 to 2 weight percent of a comonomer which enhances dyeability, and the other copolymer, used in an amount of from 1-50 weight percent, containing from 20-50 percent by weight of acrylonitrile units and 50-80 percent of vinylidene chloride units. The filaments may be used in textile applications, such as for clothing, furniture upholstery, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.