Rapidly crystallizing polyester materials and a process for thei

Details Rapidly crystallizing polyester materials and a process for thei Rapidly crystallizing polyester materials and a process for thei

1986-09-05

1987-11-10

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528274, 528281, 5283083, 5283088, C08G 6304

Patent

active

047058447

ABSTRACT:
The invention relates to rapidly crystallizing polyester materials and a process for their preparation, in which, in a first stage, the polyester is prepared in the presence of an (alkaline earth) alkali metal or of an (alkaline earth) alkali metal compound, and then, in a second stage, further non-nucleated polyesters and a crystallization accelerator in a adequate amount are, if required, added to this polyester.
The polyesters according to the invention are distinguished in particular by reduced molecular weight degradation.

REFERENCES:
patent: 4086212 (1978-04-01), Bier et al.
patent: 4115371 (1978-09-01), Bier et al.
patent: 4327007 (1982-04-01), Vanderkooi et al.
patent: 4380621 (1983-04-01), Nield et al.
patent: 4451606 (1984-05-01), Campbell
patent: 4654413 (1987-03-01), Takahashi

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