Aqueous dispersions of polyurethane resins and aqueous...

Details Aqueous dispersions of polyurethane resins and aqueous... Aqueous dispersions of polyurethane resins and aqueous...

2005-04-05

2005-04-05

Niland, Patrick D. (Department: 1714)

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...

C524S839000, C524S840000

Reexamination Certificate

active

06875810

ABSTRACT:
An aqueous dispersion of a polyurethane resin obtainable from compounds including: (A) an organic polyisocyanate; (B) a polyester polyol containing an aromatic metal sulfonate group; (C) an aliphatic polyol being free from aromatic metal sulfonate and having a hydroxyl value of from 10 to 350; and (D) at least one of a polyamine and a polyol each having a molecular weight of 300 or lower, wherein the content of said aliphatic polyol unit (C) amounts to at least 55% by weight based on the solid content of said polyurethane resin. Also disclosed is an aqueous adhesive comprising the polyurethane resin aqueous dispersion.

REFERENCES:
patent: 3036998 (1962-05-01), Rudner et al.
patent: 3756992 (1973-09-01), Dieterich et al.
patent: 5703158 (1997-12-01), Duan et al.
patent: 59-30186 (1984-07-01), None
patent: 2894494 (1999-03-01), None

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