Title:
【発明の名称】光重合による(共)重合体
Document Type and Number:
Japanese Patent JP2001512512
Kind Code:
A
Abstract:
A Process for the selective preparation acrylate- or methacrylate-homo- or acrylate- or methacrylate-co-oligomers with a weight average molecular weight (Mw) from 1000 to 20000, a polydispersity<=3 and a conversion of the monomers to polymers greater than or equal to 70%, or for the selective preparation of polyvinylacetate and its hydrolysis product polyvinylalcohol with a weight average molecular weight (Mw) from 1000 to 25000, a polydispersity<=3 and a conversion of the monomers to polymers greater than or equal to 70%, is characterized in that a mixture of the corresponding monomers is irradiated in the presence of a specific photoinitiator or photoinitiator mixture at a temperature from -20 to 70° C. in an inert solvent or inert solvent mixture, with light of a wavelength from 305 to 450 nm, wherein the contents of monomers in the reaction mixture is up to 70%.
Inventors:
Desoburi, Vincent
Application Number:
JP53621498A
Publication Date:
August 21, 2001
Filing Date:
February 09, 1998
Export Citation:
Assignee:
Ciba Specialty Chemicals Holding Incorporated
International Classes:
C08F2/48; C08F2/50; C08F4/00; C08F20/12; C09D129/04; C09D131/04; C09D133/04; (IPC1-7): C08F2/48; C09D129/04; C09D131/04; C09D133/04
Attorney, Agent or Firm:
Hajime Tsukuni (1 person outside)