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:
Oct. 19, 2010
Filed:
May. 30, 2005
Nobutaka Fujimoto, Hyogo, JP;
Koji Ueda, Hyogo, JP;
Masato Fujikake, Hyogo, JP;
Sumitomo Seika Chemicals Co., Ltd., Kako-gun, JP;
Abstract
It is an object of the invention to provide a method of producing a crosslinked poly(meth)acrylic acid compound, in particular a method of producing a crosslinked poly(meth)acrylic acid nitroxide compound, which is a radical compound excellent in solvent stability. The invention is a method of producing a crosslinked poly(meth)acrylic acid compound resulting from crosslinking of a poly(meth)acrylic acid compound represented by the general formula (1): (in the formula, n Zs represent a hydrogen atom(s) and/or an oxygen atom(s) having one unpaired electron, R represents a hydrogen atom or a methyl group and n represents an integer of 5 to 1000000), (in the formula, Zrepresents a hydrogen atom when Zis a hydrogen atom, or a hydrogen atom or an oxygen atom having one unpaired electron when Zis an oxygen atom having one unpaired electron; and R represents the same group as R in the above general formula (1)) in the presence of a crosslinking agent.