Aqueous polyester dispersions of stabilized viscosity, their pre

Details Aqueous polyester dispersions of stabilized viscosity, their pre Aqueous polyester dispersions of stabilized viscosity, their pre

1998-11-13

1999-12-28

Acquah, Samuel A.

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...

528272, 525437, 525438, 525440, 525446, 525449, 524 81, 524186, 524261, 524323, 524539, 524588, 524591, 524601, 524604, 524608, 524801, 524806, 428480, 428481, C08J 232

Patent

active

060082917

ABSTRACT:
Viscosity-stabilized aqueous polyester dispersions comprising an acid-functional polyester resin a, neutralizing agent b for the polyester resin a, the amount of neutralizing agent being sufficient to convert from 10 to 200% of the amount of substance of acid groups in the polyester resin a into salt groups by means of the amount of neutralizing agents added, the neutralizing agents being selected from ammonia and organic amines and also alkali metal hydroxides and alkaline earth metal hydroxides; if desired, an organic auxiliary solvent, silica in an amount such that the mass of SiO.sub.2 is from 0.1 to 50% of the mass of the polyester resin, and water. The dispersions are useful in coating compositions.

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patent: 4719146 (1988-01-01), Hohage et al.
patent: 5576397 (1996-11-01), Oberressl et al.
patent: 5698625 (1997-12-01), Billiani et al.

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