The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2013
Filed:
Jan. 03, 2007
Shintaro Kikuchi, Ibaraki, JP;
Fumiaki Nakashima, Ibaraki, JP;
Hisakazu Arima, Ibaraki, JP;
Shigeru Sakurai, Tokyo, JP;
Takako Hirano, Chiba, JP;
Hachirou Hirano, Ichihara, JP;
Shintaro Kikuchi, Ibaraki, JP;
Fumiaki Nakashima, Ibaraki, JP;
Hisakazu Arima, Ibaraki, JP;
Shigeru Sakurai, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A method for evaluating the caking property of sodium hydrogencarbonate crystal particles, characterized in that sodium hydrogencarbonate crystal particles are hermetically sealed in a packaging material having a water vapor transmission rate of at least 3 g/(m·24 h) (at 40° C. with a relative humidity difference of 90%) as stipulated in JIS K7129 and left at rest at a temperature of from 17 to 35° C. at a carbon dioxide gas concentration of from 0.03 to 0.05 vol % at a relative humidity of from 40 to 95% for from 2 weeks to 3 months, and the proportion of agglomerated sodium hydrogencarbonate crystal particles is determined to evaluate the caking tendency. A novel test method for evaluating the caking property of sodium hydrogencarbonate crystal particles, capable of providing results of the caking property test with high reproducibility, quantitatively with high versatility, can be provided.