Polyester film comprising specific porous silica particles

Details Polyester film comprising specific porous silica particles Polyester film comprising specific porous silica particles

1992-03-25

1994-06-07

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

423339, 4283073, 428331, 428402, 428480, 428910, B32B 326

Patent

active

053188330

ABSTRACT:
A polyester film having uniform surface and excellent running property and transparency is disclosed. Said polyester film is characterized by containing 0.01-5 wt. % of porous precipitated silica particles which are coagulates of primary particles having an average particle diameter of 0.01-0.1 .mu.m and have a pore volume of 0.05-0.5 ml/g, a specific surface area of 30-150 m.sup.2 /g and an average particle diameter of 0.1-0.5 .mu.m.

REFERENCES:
patent: 4497918 (1985-02-01), Wason
patent: 4780356 (1988-10-01), Otouma et al.
patent: 4895759 (1990-01-01), Crawford
patent: 4990400 (1991-02-01), Endo et al.
patent: 5077118 (1991-12-01), Hasegawa et al.

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