Titanium dioxide—containing polymers and films with...

Details Titanium dioxide—containing polymers and films with... Titanium dioxide—containing polymers and films with...

2004-03-06

2008-03-04

Wyrozebski, Katarzyna (Department: 1796)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S212000, C524S261000

Reexamination Certificate

active

07338995

ABSTRACT:
Pigmented polymer compositions and processes for preparing melt-processible polymer compositions contain a melt-processible polymer, surface treated organic pigment, typically titanium dioxide, and a polymer processing aid are described. The pigment is surface treated by contact with a silicon-containing compound, such as octyltriethoxysilane followed by contact with an organic compound such as isostearic acid or ethoxylated silicone. The pigmented polymer composition containing a polymer processing aid facilitates production of shaped articles with low melt fracture.

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