Process for inhibiting corrosion of polyurethane coating

Details Process for inhibiting corrosion of polyurethane coating Process for inhibiting corrosion of polyurethane coating

1985-02-06

1986-04-15

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528905, C08G 1836

Patent

active

045828911

ABSTRACT:
An anti-corrosive polyurethane coating composition which has excellent metal corrosion inhibiting property, water resistance, adhesion property to metals, impact resistance and other properties required for anti-corrosive paints, and can be coated thick with one coating operation, containing as an essential component a polyurethane resin having a density of crosslinking of 1.10 to 2.00 per 1,000 atomic weight of the resin and produced by reaction of (A) a polyol component having a hydroxyl value of 160 to 350 mgKOH/g and being composed of a castor oil polyol alone or a mixture of a castor oil polyol and a low molecular polyol having a functionality of at least 2, preferably at least 3, and (B) a polyisocyanate component in an NCO/active hydrogen ratio of 0.85-1.151 by equivalent.

REFERENCES:
patent: 3546148 (1970-12-01), Diamond et al.

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