Compositions: coating or plastic – Coating or plastic compositions – Carbohydrate or derivative containing
Patent
1984-10-30
1987-08-18
Clingman, A. Lionel
Compositions: coating or plastic
Coating or plastic compositions
Carbohydrate or derivative containing
106288B, 106309, 106DIG3, C04B 1420
Patent
active
046875212
ABSTRACT:
Randomly interstratified clay in synthesized by:
(i) saturating (replacing all the exchangeable cations of) a first clay with alkali metal ions (preferably Na.sup.+ or Li.sup.+), removing any excess alkali metal ions, and forming the saturated clay into a suspension containing no suspended particles exceeding 10.sup.-7 m equivalent spherical diameter,
(ii) saturating a second clay with alkali metal ions (preferably Na.sup.+ or Li.sup.+), removing any excess alkali metal ions, and forming the saturated clay into a suspension containing no suspended particles exceeding 10.sup.-7 m equivalent spherical diameter,
(iii) mixing the suspensions from (i) and (ii) to form a mixed suspension, and
(iv) sedimenting and optionally drying the mixed suspension, the sediment being the synthetic randomly interstratified clay.
A wider range of synthetic clay compositions is thereby made available for use as catalysts, sorbents etc.
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patent: 4094698 (1978-06-01), Thompson
G. F. Walker et al., Chemical Exfoliation of Vermiculite and the Production of Colloidal Dispersions, Science, vol. 156, Apr. 1967, pp. 385-387.
B. S. Neumann, Behavious of a Synthetic Clay in Pigment Dispersions, 1965, pp. 251-255.
Clingman A. Lionel
National Research Development Corporation
Thompson Willie J.
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