Chemically treated glass fibers for reinforcing polymers
US4927869A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1988 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Sep 15, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C25/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Chemically treated glass fibers of the present invention provide good processing properties in reinforcing thermosetting polymers while resulting in fiber reinforced thermosetting materials having good strength properties. The chemically treated glass fibers have a dried residue of an aqueous chemical treating composition having: two film forming polymers, at least an acryloxy alkyl trialkoxysilane, a fiber lubricant and polyester curing agent and water. One film forming polymer is a polyvinylacetate copolymer having a low solubility in acetone and the other film forming polymer is unsaturated, curable, essentially linear polyester polymer. The fiber lubricant is a nonionic polyethylene-containing polymer or a cationic lubricant like polyalkylene polyamine polyamino amide, and partially amidated polyalkylenimines and mixtures thereof present in an effective lubricating amount. The nonionic lubricant may be used and the cationic lubricant is used in conjunction with a fuzz reducing agent such as silylated polyazamide. Additional components which may be present include: an amino organofunctional silane coupling agent, and a polyoxyethylene polymer having a molecular weight in the ran…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.