Titanate esters useful as polymerization initiators for macrocyl

Details Titanate esters useful as polymerization initiators for macrocyl Titanate esters useful as polymerization initiators for macrocyl

1996-08-05

1997-08-26

Acquah, Samuel A.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

528279, 528490, 528491, 528503, C08K 310, C08G 6382

Patent

active

056612141

ABSTRACT:
Macrocyclic polyester oligomer compositions are polymerized to high molecular weight polyesters by heating with a titanate ester composition comprising moieties having oxygen or nitrogen chelated with a titanium atom or having two titanium atom connected by alkylene ester units. Depending on the chemical nature of the initiator, the polymerization reaction may be extremely rapid as desired for structural reaction injection molding, or may have an induction period as desired for resin transfer molding.

REFERENCES:
patent: 5039783 (1991-08-01), Brunelle et al.
patent: 5214158 (1993-05-01), Brunelle et al.
patent: 5231161 (1993-07-01), Brunelle et al.
patent: 5321117 (1994-06-01), Brunelle
patent: 5466744 (1995-11-01), Evans et al.
patent: 5527976 (1996-06-01), Takekoshi et al.

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