Polyester production

Details Polyester production Polyester production

1977-06-22

1979-09-04

Danison, Walter C.

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

Synthetic resins

From carboxylic acid or derivative thereof

528304, 525444, C08G 6356

Patent

active

041668960

ABSTRACT:
I disclose thermosetting unsaturated polyesters which I produce from a mixture of glycols and oligomers. The mixture is a waste stream from a process for the production of linear polyesters from glycols and terephthalic acid. Prior to this invention, the waste stream had to be burned or buried. Now I can make useful polyester resins from them.

REFERENCES:
patent: 2793235 (1957-05-01), Jenkinson
patent: 3160679 (1964-12-01), Lew
patent: 3252941 (1966-05-01), Mayer et al.
patent: 3442868 (1969-05-01), Ogata et al.
patent: 3836574 (1974-09-01), Achsel et al.

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