	US 12,071,378 B2
	High temperature fiber and method of making
Paul Sheedy, Bolton, CT (US); Wayde R. Schmidt, Pomfret Center, CT (US); and Neal Magdefrau, Tolland, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX Corporation, Farmington, CT (US)
Filed on Aug. 9, 2019, as Appl. No. 16/536,742.
Prior Publication US 2021/0039998 A1, Feb. 11, 2021
Int. Cl. C04B 35/628 (2006.01); C04B 35/622 (2006.01); C04B 35/80 (2006.01); D01F 11/10 (2006.01); D06M 11/83 (2006.01)

CPC C04B 35/6286 (2013.01) [C04B 35/62231 (2013.01); C04B 35/62272 (2013.01); C04B 35/62884 (2013.01); C04B 35/80 (2013.01); D06M 11/83 (2013.01); C04B 2235/5212 (2013.01); C04B 2235/522 (2013.01); C04B 2235/5224 (2013.01); C04B 2235/5228 (2013.01); C04B 2235/5236 (2013.01); C04B 2235/524 (2013.01); C04B 2235/5244 (2013.01); C04B 2235/5248 (2013.01); C04B 2235/9669 (2013.01); D01F 11/10 (2013.01)]

8 Claims

1. A method of making high temperature fiber comprising incorporating an inorganic species into a polymer precursor fiber to form a modified polymer precursor fiber and converting the modified polymer precursor fiber to a high temperature fiber having a bonded inorganic atom,

wherein the polymer precursor fiber comprises polycarbosilanes.