Emulsifier from condensing polyether polyol(s) and polyepoxide

Details Emulsifier from condensing polyether polyol(s) and polyepoxide Emulsifier from condensing polyether polyol(s) and polyepoxide

1996-09-26

1999-07-20

Sellers, Robert E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

523402, 523403, 525480, C08G 5914, C08L 320

Patent

active

059257253

ABSTRACT:
An emulsifier composition for water-dilutable epoxy resins comprise condensation products of an aliphatic polyol component having a weight-average molar mass (M.sub.w) of from 200 to 20,000 g/mol, where a mass fraction of at least 5%, has a weight-average molar mass (M.sub.w) of at least 4000 g/mol, and an epoxide component having of at least one epoxide compound having at least two epoxide groups per molecule and an epoxide group content of from 500 to 10,000 mmol/kg, the ratio of the number of hydroxyl groups to that of the epoxide groups (OH):(EP) being from 1:3.51 to 1:10. When the emulsifier is used for the preparation of aqueous epoxy resin systems, the end of the pot life is indicated by a sharp rise in viscosity.

REFERENCES:
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patent: 4197389 (1980-04-01), Becker et al.
patent: 4315044 (1982-02-01), Elmore et al.
patent: 4886845 (1989-12-01), Becker et al.
patent: 5236974 (1993-08-01), Dreischoff et al.
patent: 5344856 (1994-09-01), Klein
patent: 5415689 (1995-05-01), Wekenmann et al.
patent: 5459180 (1995-10-01), Pfeil et al.

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