Fine-celled foam composition and method

Details Fine-celled foam composition and method Fine-celled foam composition and method

1996-07-10

1998-02-03

Marcheschi, Michael

Compositions: coating or plastic

Coating or plastic compositions

Alkali metal silicate containing

106602, 106603, 106605, 106618, 106619, 106624, 106634, 106122, 106610, 264 41, 264 42, 264 451, 264 50, 264 453, 501 80, 501 84, C04B 1204, C04B 3800, C04B 3810

Patent

active

057140006

ABSTRACT:
Disclosed is a rigid fine-celled foam composition and a method of producing it. The foam composition is nontoxic, environmentally friendly, has improved absorption/adsorption and retention of liquids, is not as hard as prior art foams, does not include polymerization by-products detrimental to flower and plant life, and is a foamed mixture of a caustic silicate solution derived from the caustic digestion of rice hull ash having diffused activated carbon particles from thermal pyrolysis of rice hulls rather than from commercial sodium silicate solutions. Valuable by-products of commodity grade are obtained including activated carbon and sodium fluoride.

REFERENCES:
patent: 3741898 (1973-06-01), Mallow et al.
patent: 3856539 (1974-12-01), Mallow et al.
patent: 4084980 (1978-04-01), Motoki
patent: 4488908 (1984-12-01), Goodwin et al.
patent: 5503931 (1996-04-01), Goodman, Sr.

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