Title:
乳化重合により共役ジエンをベースとしたラテツクスを製造する方法
Document Type and Number:
Japanese Patent JP4478217
Kind Code:
B2
Abstract:
In the production of latices based on butadiene, isoprene and/or chloroprene and optionally vinyl comonomers by emulsion polymerisation, the monomers are dosed into a seed latex with a particle size of 10-80 nm, based on the monomers used or on inorganic pigments, in the presence of a free radical activator and emulsifier, so that the ratio of the rate of polymerisation to the rate of addition of the monomers is (0.05-0.7):1. Polymerisation is carried out to ≥ 95% monomer conversion at 10-95 degrees C. Dosing of the emulsifier is regulated so that the final particle size (TGL) of the latex satisfies the equation; in which DL = the density, mL = the mass and TGL = the size of the particles in the latex to be produced; Dss = the density, ms = the mass and TGs = the size of the particles in the seed. The amounts used are 0.1-10 wt.% emulsifier, ≥ 15 wt.% conjugated diene(s), ≤ 85 wt.% vinyl comonomer(s) and 0.01-15 wt.% seed, all with respect to the total amount of monomers used.
Inventors:
Hans-Guiunter Huocto
Heinrich Grafwe
Hermann-Joseph Bros
Martin Martiner
Heinrich Grafwe
Hermann-Joseph Bros
Martin Martiner
Application Number:
JP5424797A
Publication Date:
June 09, 2010
Filing Date:
February 24, 1997
Export Citation:
Assignee:
PolymerLatex GmbH
International Classes:
C08F2/22; C08F2/24; C08F36/00; C08F36/04; C08F236/12; C08F291/00; C08F292/00
Domestic Patent References:
| JP570509A | ||||
| JP2232204A |
Attorney, Agent or Firm:
Patent Service Corporation Patent Office Sykes