Solid melt blended phosphite composites

Details Solid melt blended phosphite composites Solid melt blended phosphite composites

2007-02-13

2007-02-13

Szekely, Peter (Department: 1714)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S151000, C524S153000, C252S400240

Reexamination Certificate

active

10778492

ABSTRACT:
A solid phosphite composite, having at least a portion in amorphous form, which includes at least one, preferably two or more phosphite antioxidants or alternatively at least one phosphite and at least one other polymer additive. The phosphites, at least one of which can initially be a liquid, are generally uniformly distributed since they are melt blended. A desired class of phosphites are the bis(arylalkylphenyl)pentaerythritol diphosphites, at least a portion of which is in amorphous form.

REFERENCES:
patent: 4957956 (1990-09-01), Neri et al.
patent: 5438086 (1995-08-01), Stevenson et al.
patent: 5844042 (1998-12-01), Neri et al.
patent: 6075158 (2000-06-01), Hill
patent: 03 05371 (2003-12-01), None

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