Title:
METHOD FOR REGULATING SIZE OF RUBBER-LIKE COMPOSITE PARTICLE DISPERSED IN CONTINUOUS RESIN PHASE
Document Type and Number:
Japanese Patent JP3468852
Kind Code:
B2
Abstract:
PURPOSE: To reduce the volume-mean diameter of rubber-like composite particles dispersed in a continuous resin phase and to thereby obtain a well-balanced impact-resistant modified thermoplastic material by subjecting a syrup of the rubber-like composite particles to uniform shearing.
CONSTITUTION: 1-20 wt.% rubber-like composite particles having a volume-mean particle diameter of about 6-15 μm are dispersed in a continuous resin phase (e.g. styrene/acrylonitrile copolymer). Next, this syrup is subjected to a field of a relatively uniform controlled shear to reduce the volume-mean particle diameter of the rubber-like composite particles in the syrup by 20% or above, desirably, to about 0.05-5 μm. Here, the rubber-like composite particles are suitably made of a polybutadiene. The field of controlled shear is suitably realized by a process comprising feeding the syrup into a chamber provided with a cylinder and relatively rotating the chamber and the cylinder.
Inventors:
James E. Cantril
Thomas Earl Doyle
Thomas Earl Doyle
Application Number:
JP16529994A
Publication Date:
November 17, 2003
Filing Date:
July 18, 1994
Export Citation:
Assignee:
Novacore Chemicals (International) Society Anonym
International Classes:
C08J3/20; C08F2/02; C08F279/02; C08F287/00; (IPC1-7): C08J3/20
Domestic Patent References:
| JP4234415A |
Other References:
【文献】欧州特許出願公開429986(EP,A2)
【文献】欧州特許出願公開376232(EP,A2)
【文献】欧州特許出願公開376232(EP,A2)
Attorney, Agent or Firm:
Akira Asamura (3 outside)