Method for adding inorganic additives to finished polymer melts

Details Method for adding inorganic additives to finished polymer melts Method for adding inorganic additives to finished polymer melts

2006-03-07

2006-03-07

Thexton, Matthew A. (Department: 1714)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S210000, C523S351000, C524S098000, C524S249000, C524S275000, C524S377000

Reexamination Certificate

active

07008978

ABSTRACT:
A process is described for the modification of polymer melts by means of finely divided inorganic solid particles (melt modification process), in which a powdery additive which contains the inorganic solid particles with a maximum particle size of 1 μm embedded in finely divided form in a matrix of an organic substance, the organic substance containing one or more of the substances from the group consisting of polyols, polyglycols, polyethers, dicarboxylic acids and derivatives thereof, AH salt, caprolactam, paraffins, phosphoric acid esters, hydroxycarboxylic acid esters and cellulose, is incorporated into the polymer.

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USPTO obtained Derwent machine translation of JP 9-227768-A (Sep. 2, 1997).
USPTO obtained translation of DE 19839840-A1 (Mar. 9, 2000), Meyers et al.
Ginestar, Jose, “Pigments as Photoprotectants” issued Feb. 2003, downloaded from the internet at http://www.thecosmeticsite.com/formulating/suncare/959671.html.
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