Acrylic acid-based polymer and method of producing the same

Details Acrylic acid-based polymer and method of producing the same Acrylic acid-based polymer and method of producing the same

2006-06-13

2010-12-07

Bernshteyn, Michael M (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S317100, C526S319000, C528S354000

Reexamination Certificate

active

07847045

ABSTRACT:
Disclosed are an acrylic acid-based polymer which is a star polymer containing a repeating unit derived from an (α-lower alkyl)acrylic ester represented by formula (I):(wherein R1represents a hydrogen atom or a lower alkyl group, and R2represents an organic group having a polar group) in an arm portion; an acrylic acid-based polymer containing a repeating unit derived from an poly(α-lower alkyl)acrylic ester and a repeating unit derived from an (α-lower alkyl)acrylic ester represented by formula (I), and a method for producing a polymer through living polymerization, comprising forming an oligomer having a polymerization active end, which is an oligomer higher than an average 1.0-mer and lower than an average 4.0-mer or an average 4.0-mer, and polymerizing using the oligomer having a polymerization active end as an initiating species.

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