Sizing of glass fibers using aqueous dispersions of film-forming copolymer of 90 percent by weight vinyl acetate with quaternary ammonium salt derivative of acrylic acid comonomer
US3969299A · kind A · utility
14Cited by
10References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1972 |
| Grant date | Jul 13, 1976 |
| Priority date | — |
| Expiry date | Jul 13, 1992 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C25/28
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention is concerned with coating Glass Fibers with size and is also concerned with the provision of an improved size composition for use in carrying out the coating step. We provide an aqueous size composition including a polymer dispersion of cationic character, at least 90% of the polymer being formed from units derived from vinyl acetate. The cationic character of the polymer dispersion is formed during preparation of the polymer dispersion by emulsion polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.