Process for making self-curing or curable materials from coal hy

Details Process for making self-curing or curable materials from coal hy Process for making self-curing or curable materials from coal hy

1980-01-15

1981-03-31

Schain, Howard E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528137, 528139, 528143, 528144, 528147, 528153, 528238, 528241, 528247, C08G 810, C08G 820, C08G 822, C08G 1002

Patent

active

042594731

ABSTRACT:
Self-curing or curable materials are obtained from the distillation residues of coal hydrogenation by condensing a residue of this type having a softening point of 30.degree. to 54.degree. C. in a first stage with a mono- or dihydroxybenzene and/or a methylhydroxybenzene and/or an ethylene substituted benzene. These reactants are used at a ratio of residue to benzene derivative between 1:1 and 2:1 and the reaction is carried out in the presence of acid at a pH of 1 to 2 and at a temperature of 90.degree. to 100.degree. C. In a second stage the thus obtained reaction product is then further reacted at about the same temperature with an aldehyde. As a result a novolak-type resin is obtained. The invention permits the making of inexpensive self-curing or curable materials with properties similar to those of phenolic acids. Besides, the invention also provides an outlet for the high boiling residue of the extractive coal hydrogenation which otherwise had little use.

REFERENCES:
patent: 2289478 (1942-07-01), Brown
patent: 2460724 (1949-02-01), Allen et al.
patent: 2487309 (1949-11-01), Champagnati et al.
patent: 3188301 (1965-06-01), Roberts et al.
patent: 4187369 (1980-02-01), Pavlikov et al.

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