Title:
METHOD FOR PRODUCING CHLOROPRENE-BASED LATEX
Document Type and Number:
WIPO Patent Application WO/2023/153406
Kind Code:
A1
Abstract:
Provided is a method which is for producing a chloroprene-based latex and by which it is possible to obtain a chloroprene-based latex that achieves an excellent balance in average particle size, standard deviation and variance of the particle size distribution, viscosity, molecular weights of the gel fraction and the sol fraction, and the amounts of 1,2-isomers in a chloroprene-based polymer. The present invention provides a method that is for producing a chloroprene-based latex and that comprises a polymerization step for polymerizing material monomers including a chloroprene monomer. In the polymerization step, an emulsifier and a pH adjustor are added. The polymerization temperature in the polymerization step is 30°C or lower. In the polymerization step, 0.0001-0.0150 parts by mass of the polymerization inhibitor is added to 100 parts by mass of the material monomers before the start of polymerization and/or at the initial stage of the polymerization. The polymerization inhibitor is soluble to chloroprene but is insoluble to water.
Inventors:
ANDO RYOTARO (JP)
SATO TAKAHIRO (JP)
SATO TAKAHIRO (JP)
Application Number:
PCT/JP2023/004017
Publication Date:
August 17, 2023
Filing Date:
February 07, 2023
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C08F2/24; C08F36/16; C09J111/02
Foreign References:
| JP2004323849A | 2004-11-18 | |||
| JP2006124568A | 2006-05-18 | |||
| JPS62192409A | 1987-08-24 | |||
| JPS62257917A | 1987-11-10 | |||
| JPS62257918A | 1987-11-10 |
Attorney, Agent or Firm:
SK INTELLECTUAL PROPERTY LAW FIRM et al. (JP)
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