Swellable phyllosilicates

Details Swellable phyllosilicates Swellable phyllosilicates

2001-08-29

2008-09-02

Lorengo, Jerry (Department: 1793)

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

C106S486000, C106S811000, C106S718000, C106S716000, C510S515000, C501S079000, C501S147000

Reexamination Certificate

active

07419540

ABSTRACT:
A swellable layer silicate is described based on smectite or sepiolite/palygorskite for use in media containing di- or polyvalent cations that reduce swellability, characterized by a swelling volume of about 5 to 50 mL, measured by addition of 2 g layer silicate (air-dried) to 100 mL water, and by a fineness of maximum 5 wt. % >40 μm and maximum 20% >20 μm, as dry sieve residue.

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“Applied Clay Science,” I(1986) pp. 273-284.

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