Poly (meth) acrylamide with a high stereoregularity and...

Details Poly (meth) acrylamide with a high stereoregularity and... Poly (meth) acrylamide with a high stereoregularity and...

2005-10-18

2005-10-18

Pezzuto, Helen L. (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S090000, C526S123100, C526S304000, C526S305000, C526S307000

Reexamination Certificate

active

06956092

ABSTRACT:
The present invention provides a novel high-molecular substance having a unique function and a process for producing the same. That is, it is a poly(meth)acrylamide which has a syndiotacticity of 50% or lower and is highly isotactic or heterotactic. The poly(meth)acrylamide is obtained by radical-polymerizing an acrylamide or methacrylamide in the presence of a Lewis acid catalyst.

REFERENCES:
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patent: 5854364 (1998-12-01), Senninger et al.
patent: 6566469 (2003-05-01), Kaplan et al.
patent: 6762260 (2004-07-01), Sonnenschein et al.
patent: 10-195136 (1998-07-01), None
Stereospecific Radical Polymerization of N-Methyl Methacrylamide, Polymer Journal, vol. 32, No. 8, pp 694-699 (2000).
Asymmetric Anionic Polymerization of Alkyl-Substituted N,N-Diphenylacrylamide Derivatives, Polymer Journal, vol. 30, No. 3, pp 249-255 (1998).
Stereospecific Anionic Polymerization of N,N-Dialkylacrylamides, Macromolecules, 32, pp 6466-6477 (1999).

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