Impregnation of yarns
US4276328A · kind A · utility
2Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1979 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | Oct 29, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2947
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for the treatment of glass yarn in which the yarn is impregnated with a low viscosity solution of a thermosetting binder in an organic solvent, the viscosity of said solution being not greater than 50 centipoise (=0.05 Pascal seconds) at 25.degree. C.; solvent is then evaporated from the impregnated yarn; the yarn is further impregnated with a high viscosity solution of a thermosetting binder in an organic solvent; and solvent is again evaporated from the impregnated yarn. The process improves the properties of the glass yarn when used in the manufacture of glass reinforced composites.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.