Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
URETHANE RESIN USING POLYROTAXANE, AND PAD FOR POLISHING
Document Type and Number:
WIPO Patent Application WO/2019/198675
Kind Code:
A1
Abstract:
The present invention is a urethane resin that is obtained by reacting (C1) a bifunctional active hydrogen-containing compound that has two active hydrogen-bearing groups per molecule with a polymerizable composition that comprises at least: (B2) a urethane prepolymer having an iso(thio)cyanate group at the molecule terminal, obtained by reacting (B1) a bifunctional iso(thio)cyanate group-containing compound having two iso(thio)cyanate groups per molecule; (A) a polyrotaxane that has a complex molecular structure comprising an axial molecule and a plurality of cyclic molecules enclosing the axial molecule, and that has a side chain having an active hydrogen-bearing group introduced into at least some of the cyclic molecules; and (C2) a multifunctional active hydrogen-containing compound other than the polyrotaxane (A), that has three or more active hydrogen-bearing groups per molecule. The present invention makes it possible to provide a urethane resin that is for highly wear-resistant sliding members, and that is suitable for use as a pad for polishing.

Inventors:
SHIMIZU YASUTOMO (JP)
KAWASAKI TAKAYOSHI (JP)
TOCHI MITSUKI (JP)
Application Number:
PCT/JP2019/015355
Publication Date:
October 17, 2019
Filing Date:
April 08, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOKUYAMA CORP (JP)
International Classes:
C08G18/64; B24B37/24; C08G18/10; C08J5/14
Domestic Patent References:
WO2015159875A12015-10-22
WO2017038865A12017-03-09
WO2018092826A12018-05-24
WO2019069694A12019-04-11
WO2006115255A12006-11-02
WO2016114243A12016-07-21
WO2015159875A12015-10-22
WO2015174187A12015-11-19
WO2017130998A12017-08-03
WO2015068798A12015-05-14
Foreign References:
JP2017105959A2017-06-15
JP2011241401A2011-12-01
JP2014066857A2014-04-17
JP2007077207A2007-03-29
JP2015178558A2015-10-08
JP2017048305A2017-03-09
JP2017075301A2017-04-20
Other References:
See also references of EP 3778688A4
Attorney, Agent or Firm:
TAGUCHI, Masahiro et al. (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: CELL CULTURE METHOD, METHOD FOR PRODUCING CELL SUPPORT COMPLEX, CULTURED CELL AND CELL SUPPORT COMPL...

Next Patent: ANTIFOULING COATING COMPOSITION