Epoxidized modified acetophenone/formaldehyde resins

Details Epoxidized modified acetophenone/formaldehyde resins Epoxidized modified acetophenone/formaldehyde resins

1989-08-18

1990-10-02

Kight, III, John

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528227, 549560, 525438, 525934, C08G 230, C08G 1604

Patent

active

049608401

ABSTRACT:
Polyglycidyl ethers which are obtainable by reacting acetophenone with 0.7 to 1.4 mol of formaldehyde per mol of acetophenone, in the presence of an alkaline catalyst and in the temperature range from 50.degree. to 100.degree. C., to a carbonylated acetophenone/formaldehyde resin, hydrogenating said carbonylated resin to a modified hydroxylated acetophenone/formaldehyde resin, subsequently converting said resin with epichlorohydrin, in the presence of a phase transfer catalyst, into the corresponding polychlorohydrin ether, and dehydrochlorinating said ether with a base, are suitable for use as epoxy resins, for example for the preparation of powder coating compositions having good resistance to chemicals and good adhesion.

REFERENCES:
patent: 2380142 (1945-07-01), Ballard et al.
patent: 2462031 (1949-02-01), Wittcoff
patent: 2600764 (1952-06-01), Harvey
patent: 4542194 (1985-09-01), Dorffel et al.
Chemical Abstract, vol. 50, 611.
Abstract of EP 41200 (12/81).

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