Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Patent
1993-03-02
1994-08-23
Lesmes, George F.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
423598, 428297, 428379, 428412, 428398, 428457, 501 95, B32B 502, C04B 3502
Patent
active
053406451
ABSTRACT:
Potassium hexatitanate fibers having a tunnel structure and a free potassium content of 5 ppm or less can be produced by mixing together a titanium containing compound and a potassium containing compound in a ratio represented by the formula K.sub.2 O.nTiO.sub.2 (wherein n=from 2 to 4); firing the mixture at 900.degree. to 1,200.degree. C. to produce mass of potassium titanate fibers; dipping the mass of product in either cold or hot water to disintegrate the mass of potassium titanate fibers into individual single fibers; adding an acid to the slurry to adjust the pH value to 9.3-9.7, thereby changing the composition of the potassium titanate fibers so that the molar ratio of TiO.sub.2 /K.sub.2 O is in the range of from 5.95 to 6.00; heating the fibers at 950.degree. to 1,150.degree. C. for 1 hour or more; and washing the fibers with an acid. The potassium hexatitanate fibers, which have a minimal free potassium content, i.e., 5 ppm or less, can be suitably used as a reinforcing material for polyester thermoplastic resins, polyphenylene sulfide resins, liquid crystal polymers, aluminum alloys, magnesium alloys and so forth, all of which are easily affected by free potassium.
REFERENCES:
patent: 3760068 (1973-09-01), Winter et al.
patent: 3956006 (1976-05-01), Winter et al.
patent: 4626564 (1986-12-01), Saito et al.
patent: 4699944 (1987-10-01), Saito et al.
patent: 4752536 (1988-06-01), Shimizu et al.
patent: 4810439 (1989-03-01), Fujiki et al.
Chem. Abstract-JP53028100 (1978), "Potassium Hexatitanate Fibers", Yanagida et al.
Harada Hidefumi
Inoue Yasuo
Brown Christopher
Lesmes George F.
Titan Kogyo Kabushiki Kaisha
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