Abstract: The present invention relates to a manufacturing process of a coated granular sodium percarbonate, wherein the surface of said sodium percarbonate establishes a multiple coating layer by being internally coated with a specific composition containing alkali metal silicate while externally coated with a specific composition containing alkali metal sulfate on upper part of said internally coated layer thus providing said sodium percarbonate an excellent dissolving rate in water as well as a good storage stability, preventing it from caking during delivery or storage, and being ultimately utilized as an effective detergent bleach containing zeolite as its detergent builder.
Type:
Grant
Filed:
January 9, 2002
Date of Patent:
November 4, 2003
Assignee:
Oriental Chemical Industries Co., Ltd.
Inventors:
Sang Hwa Lee, Yong Il Kim, Sun Ki Shur, Jong Pill Lee
Abstract: The present invention relates to a coated granular sodium percarbonate for detergent and its manufacturing process, and more particularly to a coated granular sodium percarbonate and its manufacturing process, wherein the surface of said sodium percarbonate establishes a multiple coating layer by being internally coated with a specific composition containing alkali metal silicate while externally coated with a specific composition containing alkali metal sulfate on upper part of said internally coated layer thus providing said sodium percarbonate an excellent dissolving rate in water as well as a good storage stability, preventing it from caking during delivery or storage, and being ultimately utilized as an effective detergent bleach containing zeolite as its detergent builder.
Type:
Grant
Filed:
May 24, 2000
Date of Patent:
October 15, 2002
Assignee:
Oriental Chemical Industries Co., Ltd.
Inventors:
Sang Hwa Lee, Yong Il Kim, Sun Ki Shur, Jong Pill Lee
Abstract: The present invention relates to a coated granular sodium percarbonate for detergent and its manufacturing process, and more particularly to a coated granular sodium percarbonate and its manufacturing process, wherein the surface of said sodium percarbonate establishes a multiple coating layer by being internally coated with a specific composition containing alkali metal silicate while externally coated with a specific composition containing alkali metal sulfate on upper part of said internally coated layer thus providing said sodium percarbonate an excellent dissolving rate in water as well as a good storage stability, preventing it from caking during delivery or storage, and being ultimately utilized as an effective detergent bleach containing zeolite as its detergent builder.
Type:
Application
Filed:
January 9, 2002
Publication date:
July 4, 2002
Applicant:
Oriental Chemical Industries Co., Ltd.
Inventors:
Sang Hwa Lee, Yong Il Kim, Sun Ki Shur, Jong Pill Lee