Transparent cover for transparent substrates

Details Transparent cover for transparent substrates Transparent cover for transparent substrates

1987-10-06

1989-05-02

Marquis, Melvyn I.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

528 27, 528 28, C08K 524

Patent

active

048269140

ABSTRACT:
A transparent cover layer of a soft elastic polyurethane for windshields or other transparent glass or plastic substrates. In order to give the cover layer an anti-fogging effect, the polyol component of the reaction mixture for the manufacture of the cover layer contains a difunctional sulfonated polyether polyol or a difunctional polyether polyol containing sulfonate groups having 0.5 to 13.2 percent by weight of OH groups and an average molecular weight of about 250 to 6500 g/mol, a trifunctional polyol having 5.1 to 12.8 percent by weight of OH groups and an average molecular weight of from 400 to about 1000 g/mol, as well as a non-ionic polyetherpolysiloxane having an average molecular weight of from 500 to 2000 g/mol.

REFERENCES:
patent: 3846462 (1974-11-01), Prokai et al.
patent: 4452962 (1984-06-01), Ginnings et al.
patent: 4684538 (1987-08-01), Klemarczyk

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