Polymer scale deposition preventive agent and process of produci

Details Polymer scale deposition preventive agent and process of produci Polymer scale deposition preventive agent and process of produci

1995-10-11

1997-02-11

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymerizing in reactor of specified material, or in reactor...

526 74, C08F 200, C08F 4615

Patent

active

056022158

ABSTRACT:
A polymer scale deposition preventive agent for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising an aluminum fluoride.
According to the present invention, deposition of polymer scale in a polymerization vessel can be effectively prevented, not only on the areas in the liquid-phase region but also on the areas around the interface between the gas phase and the liquid phase. In addition, the polymer obtained can be formed into products which have very few fish eyes.
The application of the present invention to polymerization makes it unnecessary to remove polymer scale for every polymerization run, thereby improving productivity.

REFERENCES:
patent: 5142003 (1992-08-01), Usuki et al.
patent: 5201945 (1993-04-01), Shimizu et al.
patent: 5401815 (1995-03-01), Shimizu et al.
patent: 5416174 (1995-05-01), Shimizu et al.

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