Reversible shear thinning gel forming coating composition for glass fibers
US4065417A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1975 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Jul 7, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C25/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved method of coating fibers and particularly glass fibers with a solution of materials containing a reversible shear thinning gel producing agent which causes the coating to be transformed into a shear thinning gel under predetermined conditions. The predetermined conditions may be brought about after the coated fibers are brought together into touching engagement in a package, or may be caused to occur before the coated fibers are brought together in touching engagement in the package. The fibers can be removed from the package and still retain a coating on the fibers, since the shearing action of the fibers through the gel converts the gel to a liquid which adheres to the fibers as they are being pulled through the gel. The predetermined conditions may involve a change in temperature, or a change in concentration of solids. The change in temperature will usually be a cooling of the coating materials to a temperature below the gelation point, and the change in concentration will usually be an evaporation of solvent to form at least a skin of gel on the surface of the coating materials. The change in temperature technique can be used to increase the amount of solids that i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.