Title:
置換スチレンのホモポリマー、コポリマーおよびターポリマーの調製
Document Type and Number:
Japanese Patent JP4343707
Kind Code:
B2
Abstract:
A novel one-pot cost efficient process for the preparation of homo-, co- and terpolymers of p-hydroxystyrene or substituted p-hydroxystyrene and alkyl acrylates. The process involves polymerization of esters of p-hydroxystyrene (or its substituted analogs), alkyl acrylate monomers and/or one or more of ethylenically unsaturated monomers in an alcohol solvent in the presence of a free radical initiator. The reaction mixture containing the so formed polymer is subjected to transesterification conditions using a catalytic amount of catalyst to result in co- and/or terpolymers of p-hydroxystyrene without cleavage of the alkyl ester in the acrylate repeat unit, and then removing the catalyst from the system. Preferred embodiments include homopolymers of p-hydroxystyrene, copolymer of p-hydroxystyrene and tert-butyl acrylate and terpolymer of p-hydroxystyrene, tert-butyl acrylate and styrene. These polymers have a wide variety of applications including as photoresists in microelectronics industry.
Inventors:
Sheehan, Michael Tea
Sonic, James Earl
Sonic, James Earl
Application Number:
JP2003586201A
Publication Date:
October 14, 2009
Filing Date:
April 10, 2003
Export Citation:
Assignee:
DuPont Electronic Technologies LP
International Classes:
C08F212/14; G03F7/039; C08F6/00; C08F6/02; C08F6/04; C08F8/00; C08F8/12; C08F8/14; C08F220/18; G03F7/004
Domestic Patent References:
| JP6266112A | ||||
| JP2000056460A | ||||
| JP2001318467A |
Foreign References:
| WO2002006895A1 |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Hiroaki Noya
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Hiroaki Noya