Method for producing crosslinked poly(meth)acrylate compound

Details Method for producing crosslinked poly(meth)acrylate compound Method for producing crosslinked poly(meth)acrylate compound

2005-05-30

2010-10-19

Choi, Ling-Siu (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S328200, C525S326700, C525S330200, C526S072000, C526S210000, C526S265000

Reexamination Certificate

active

07816457

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 Z1s 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),which method is characterized by comprising a polymerization step of polymerizing a (meth)acrylic acid compound represented by the general formula (2):(in the formula, Z2represents a hydrogen atom when Z1is a hydrogen atom, or a hydrogen atom or an oxygen atom having one unpaired electron when Z1is 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.

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