Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2005-01-18
2005-01-18
Zucker, Paul A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
Reexamination Certificate
active
06844465
ABSTRACT:
Disclosed in the present application are a method for preparing highly-stable A-type crystals by controlling and maintaining the product temperature of B-type N-(3,3-dimethylbutyl)-APM crystals at 25 to 80° C. under an absolute humidity of 0.203 kg/kg or less environment, thereby effecting crystal transition; and a method for preparing A-type crystals by controlling and maintaining the product temperature of D-type crystals of N-(3,3-dimethylbutyl)-APM at 25 to 80° C. under an absolute humidity of 0.0550 kg/kg or less environment, thereby effecting crystal transition. According to these crystal transition methods, highly stable crystals can be prepared stably and at a low cost.
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Kawahara Shigeru
Kishishita Akihiro
Nagashima Kazutaka
Takemoto Tadashi
Ajinomoto Co. Inc.
Zucker Paul A.
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