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
Abstract: This invention relates to a composite composition comprising granular sodium percarbonate with better stability in storage and fast solubility in water for the purpose of the sole use thereof or as a composition of a bleaching agent.
Type:
Grant
Filed:
March 9, 1999
Date of Patent:
April 17, 2001
Assignee:
Oriental Chemical Industries
Inventors:
Sang Hwa Lee, Chong Yun Kwag, Jong Pill Lee, Han Seog Cho
Abstract: This invention relates to a process of manufacturing granular sodium percarbonate and more particularly, to a process of a stable granular sodium percarbonate detergent composition having an excellent solution velocity when added to water, comprising the following steps: hydrogen peroxide solution is directly sprayed to unpurified anhydrous sodium carbonate to produce granular sodium percarbonate followed by the addition of a stabilizer having a new composition in a reactor or fluidized bed dryer, then recycling sodium percarbonate particles which are of nonuniform particle size back into the process for continuous manufacturing.
Type:
Grant
Filed:
March 1, 1996
Date of Patent:
December 22, 1998
Assignee:
Oriental Chemical Industries
Inventors:
Sang Ryul Kim, Chong Yun Kwag, Hwan Kee Heo, Jong-Pill Lee