Process for preparing silica pigment
First Claim
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1. A process for preparing a silica pigment comprising the following steps:
- (a) mixing sea water with an aqueous solution of sodium silicate. in which no acidulating agent is used in a weight ratio of sea water to sodium silicate ranging from 50 to 600 so that a precipitate is formed, in which the aqueous solution of sodium silicate has a concentration of sodium silicate higher than 10 wt %; and
(b) removing the precipitate from the resulting mixture.
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Abstract
A process for preparation of silica pigment by mixing sea water and an aqueous solution of sodium silicate is disclosed, in which no acidulating agent is used and the amount of sea water is 50-500 times of the sodium silicate by weight.
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Citations
6 Claims
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1. A process for preparing a silica pigment comprising the following steps:
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(a) mixing sea water with an aqueous solution of sodium silicate. in which no acidulating agent is used in a weight ratio of sea water to sodium silicate ranging from 50 to 600 so that a precipitate is formed, in which the aqueous solution of sodium silicate has a concentration of sodium silicate higher than 10 wt %; and (b) removing the precipitate from the resulting mixture. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification
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Current AssigneeJu Chen Liang
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Original AssigneeJu Chen Liang
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InventorsLiang, Ju Chen
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Primary Examiner(s)MARCHESCHI, MICHAEL A
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Application NumberUS09/008,291Time in Patent Office641 DaysField of Search106/482, 106/481, 423/335, 423/339US Class Current106/482CPC Class CodesC01B 33/12 Silica; Hydrates thereof, e...
