Process for producing styrenic polymer

Details Process for producing styrenic polymer Process for producing styrenic polymer

1996-03-07

1998-07-28

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526114, 526115, 526119, 526132, 526133, 526151, 526160, 526346, 502103, 502113, 502124, 502132, 502154, 502171, C08F 4642, C08F 1208

Patent

active

057864330

ABSTRACT:
There is disclosed a process for producing a styrenic polymer which comprises polymerizing at least one styrenic monomer by the use of a polymerization catalyst comprising in combination (A) at least one transition metal compounds, (B) an aluminoxane, (C) a coordination complex compound comprising a cation and an anion in which a plurality of radicals are bonded to a metal and (D) an organoaluminum compound. The above process is capable of producing a styrenic polymer which has high degree of syndiotactic configuration and a wide range of molecular weight distribution and is minimized in residual metallic components at a low production cast with a high efficiency.

REFERENCES:
patent: 5171919 (1992-12-01), Watanabe et al.
patent: 5225500 (1993-07-01), Elder et al.
patent: 5250629 (1993-10-01), Tani et al.
patent: 5272229 (1993-12-01), Tomotsu et al.
patent: 5329033 (1994-07-01), Spaleck
patent: 5340892 (1994-08-01), Kuramoto
patent: 5461128 (1995-10-01), Takeuchi et al.

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