Obtaining process of additivated sodic bentonite for use in...

Details Obtaining process of additivated sodic bentonite for use in... Obtaining process of additivated sodic bentonite for use in...

2007-10-19

2011-12-27

Green, Anthony (Department: 1731)

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

C106S038200, C106S038220, C106S483000, C106S484000, C106S487000, C106S807000, C106S811000, C106SDIG002

Reexamination Certificate

active

08083845

ABSTRACT:
Composition and process of a composition of additivated sodic bentonite through the addition of dextrin and sugar (saccharose), preferably refined sugar, or starch and sugar (saccharose), preferably refined sugar, in specific quantities during the process of calcic bentonite activation by means of incorporation of sodium carbonate into the in natura ore, belonging to the field of chemical industry for use in the composition of green sand for cast molding, offering a wide range of advantages in comparison with the existing formulas.

REFERENCES:
patent: 4203771 (1980-05-01), Matsui
patent: 4867228 (1989-09-01), Novelli et al.
patent: 61037345 (1986-02-01), None
Office Action issued by Canadian Patent Office on Apr. 6, 2011 regarding Application No. 2,657,799 in the name of Coque Do Sul Do Brasil Ltda.

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