Process of producing fibers from curable alk-1-enyl ether functional siloxane resins
US5814271A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1997 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Jul 31, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preparing a ceramic fiber wherein the method comprises (A) forming a green fiber from an alk-1-enyl ether functional siloxane resin of the general formula (R.sup.1 SiO.sub.3/2).sub.q (R.sup.2 SiO.sub.3/2).sub.r (R.sup.1.sub.w R.sup.2.sub.x RSiO.sub.(3-w-x)/2).sub.s (R.sup.1.sub.w R.sup.2.sub.x R.sup.3 SiO.sub.(3-w-x)/2).sub.t wherein R is an alk-1-enyl ether group; each R.sup.1 is selected from an aryl group having from 6 to 10 carbon atoms; each R.sup.2 is selected from an alkyl group having from 1 to 4 carbon atoms; R.sup.3 is an alkenyl group having from 2 to 10 carbon atoms; w has a value of 0, 1 or 2; x has a value of 0, 1, or 2 with the provisio that w+x.ltoreq.2; q has a value of 0 to 0.98; r has a value of 0 to 0.98; s is greater than zero; t.gtoreq.0; s+t=0.02 to 0.5 and q+r+s+t=1; (B) curing the green fiber to render it non-fusible; and (C) heating the non-fusible fiber in an inert environment to a temperature above 800.degree. C. to convert it to a ceramic fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.