Oriented polyester film containing calcium carbonate and kaolini

Details Oriented polyester film containing calcium carbonate and kaolini Oriented polyester film containing calcium carbonate and kaolini

1984-09-07

1986-06-17

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523220, 524425, 524447, 524605, 528272, 528275, 5283081, 5283083, 428338, 428480, G11B 562, C08K 326

Patent

active

045957150

ABSTRACT:
An oriented polyester film comprising ethylene terephthalate as the major repeating unit, which comprises particles of kaolinite and calcium carbonate uniformly dispersed therein, said kaolinite and said calcium carbonate having each an average particle size of 0.05 to 0.8 micron and being contained in such amounts as satisfying the following equations:

REFERENCES:
patent: 3669931 (1972-06-01), Annis et al.
patent: 3821156 (1974-06-01), Farrar
patent: 4052356 (1977-10-01), Breitenfellner et al.
patent: 4138386 (1979-02-01), Motegi et al.
patent: 4264372 (1981-04-01), Graves
patent: 4454312 (1984-06-01), Kuze et al.

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