Titanium (III) bases and .beta.-diketonate coordinated catalyst

Details Titanium (III) bases and .beta.-diketonate coordinated catalyst Titanium (III) bases and .beta.-diketonate coordinated catalyst

1997-01-10

1998-05-26

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526126, 526131, 526132, 526133, 526134, 526153, 526159, 526161, 526346, 556 9, 556 12, 556 40, 556 41, 502103, 502104, 502158, 502171, C08F 416, C07F 728

Patent

active

057566100

ABSTRACT:
A novel titanium (III)-based .beta.-diketonate-coordinated compound is disclosed for catalyzing the polymerization reaction of syndiotactic polystyrenes. The titanium (III)-based compound is represented by the following formula 1: ##STR1## wherein X is a C.sub.1 .about.C.sub.12 alkoxy or amine group, or a halogen atom; R is a C.sub.1 .about.C.sub.12 alkyl, aryl, or alkylsilane group. Preferably, X is N(SiMe.sub.3).sub.2 -- or OMe--, and R is phenyl, methyl, or t-butyl. The titanium (III)-based compounds are prepared by reacting titanium trichloride with diketone and tetrahydrofuran to form an intermediate product, then reacting the intermediate product Ti(AcAc)Cl.sub.2 (THF).sub.2 with either aminosilane or alcohol.

REFERENCES:
patent: 3505369 (1970-04-01), Deffiner
patent: 3946057 (1976-03-01), Reedy
patent: 4438039 (1984-03-01), Beers et al.

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