Phosphate/epoxy stabilizer for extrudable polyester blends

Details Phosphate/epoxy stabilizer for extrudable polyester blends Phosphate/epoxy stabilizer for extrudable polyester blends

1989-08-09

1991-06-11

Morgan, Kriellion

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 95, 524100, 524114, 524145, 524291, 524342, 525403, 525404, 525438, 525452, 525453, 525455, C08K 515, C08G 6532

Patent

active

050232843

ABSTRACT:
This invention is directed to a stabilizer useful to retard transesterification in moldable polymer blends containing polyester(s) during processing of the blends at elevated temperatures, particularly at high temperatures above about 285.degree. C. More particularly, the stabilizer comprises a phosphate-epoxy adduct. The stabilizer may optionally further comprise a reactive functionality component comprising a compound having a imide or oxazoline functionality and/or a hindered phenol component. The invention is also directed to a composition comprising the stabilizer and a particularly defined polymer blend.

REFERENCES:
patent: 4722955 (1988-02-01), Dick
patent: 4760107 (1988-07-01), Nelson

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