Title:
尿素基を有するモノマーを少なくとも一種類含有するラジカル共重合性モノマーの安定配合物の調製
Document Type and Number:
Japanese Patent JP4819291
Kind Code:
B2
Abstract:
Disclosed is a method of preparing a stable composition of radically copolymerizable monomers, said composition containing firstly at least one monomer which has at least one urea function in its formula and secondly at least one monomer which does not have an isocyanate function in its formula, said method comprising preparing said monomer(s) having urea function(s) by reaction of two types of reagent: at least one radically copolymerizable monomer which has at least one isocyanate function in its formula with at least one amine selected from primary and secondary amines, and incorporating said monomer(s) which does(do) not have an isocyanate function in its(their) formula, prior to said reaction, together with one of said reagents, before adding the other of said reagents, and/or during the addition of said reagents, and/or after said reaction. Characteristically, within the context of said method, said reaction for preparing said monomer(s) having urea function(s) is carried out in the absence of non-radically polymerizable solvent, with said reagents, monomer(s) having isocyanate function(s) and amine(s), being incorporated in relative proportions such that the isocyanate equivalent/amine equivalent ratio be between 0.98 and 1.02, and advantageously equal to 1, and said monomer(s) having urea function(s) obtained at the end of said reaction is(are) maintained diluted in the solvent which is constituted of said monomer(s) which does(do) not have an isocyanate function in its(their) formula, in the presence of dissolved oxygen.
Inventors:
Bear, Marie-Mo
Lafoss, Xavier
Lafoss, Xavier
Application Number:
JP2002500975A
Publication Date:
November 24, 2011
Filing Date:
May 29, 2001
Export Citation:
Assignee:
Corning Society Anonymous
International Classes:
C08F220/36; C08F212/08; C08F212/14; C08F212/36; C08F220/06; C08F220/16; C08F220/20; C08F220/26; C08F226/02; C08G18/50; C08G18/81
Domestic Patent References:
| JPH0217166A | 1990-01-22 | |||
| JP2002516623A | 2002-06-04 |
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Go Sakuma