Process for manufacturing organic fibers containing...

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion

Reexamination Certificate

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C264S465000, C425S378200, C425S17480R

Reexamination Certificate

active

08062567

ABSTRACT:
A process for manufacturing organic fibers containing an inorganic component comprising the steps of: (1) preparing an inorganic spinnable sol solution; (2) mixing the inorganic spinnable sol solution, a solvent capable of dissolving the inorganic spinnable sol solution, and an organic polymer capable of being dissolved in the solvent to prepare a spinning solution; and (3) spinning the spinning solution to form the organic fibers containing an inorganic component composed of an inorganic gel and the organic polymer, is disclosed. The inorganic spinnable sol solution preferably has a weight average molecular weight of 10,000 or more, and the inorganic spinnable sol solution is preferably prepared from a material containing a metal alkoxide having an organic substituent. According to the process of the present invention, organic fibers containing an inorganic component having an improved mechanical strength can be produced by mixing an inorganic component into an organic component, and a nonwoven fabric containing the fibers can be provided.

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European Search Report dated Jun. 22, 2011of application No. EP 09157466, the corresponding European patent application.
Song, Qiu-sheng et al., Preparation and Characterization of Continuous Fibers of PVA/Si02 Hybrid by Sol-Gel Method, Polymer Materials Science and Engineering, Nov. 2007, vol. 23, No. 6, pp. 216-219, with partial English translation.
Han, Lei, Study on Preparation and Characterization of SiO2/Silicone Hybrid Materials by Sol-Gel Process, China Doctor & Master Theses Full-Text Database (CDMD) (Master Database), Engineering Technology I, Aug. 2005, No. 4, pp. 9-15, with partial English translation.

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