Process for the production of epoxy resin castings

Details Process for the production of epoxy resin castings Process for the production of epoxy resin castings

1980-10-27

1982-03-23

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 92, 528110, 528112, 528115, 528361, 528365, 528281, 528297, 264281, 264297, G08G 5942

Patent

active

043213510

ABSTRACT:
The invention relates to a process in which, as essential components, liquid epoxy resins, carboxylic anhydrides, zinc fluoroborate complex compounds, water, tetrahydropyrane and compounds (X) which contain OH groups, COOH groups or both groups together, are reacted. Selective choice of the special quantity ratios results in reaction mixtures which, at low temperature (e.g. at 100.degree. C.), require only short moulding times and have a sufficiently long pot life. As the reaction is only slightly exothermic, the process can be used very advantageously for encapsulating electronic components.

REFERENCES:
patent: 3004931 (1961-10-01), Brueschweiler et al.
patent: 3072606 (1963-01-01), Zuppinger et al.
patent: 3142657 (1964-07-01), Fisch
patent: 3242104 (1966-03-01), Brueschweiler et al.
patent: 3523143 (1970-08-01), Kwong
patent: 3624180 (1971-11-01), Schmid et al.
patent: 3941725 (1976-03-01), Schmitter et al.
patent: 3954712 (1976-05-01), Lottanti et al.

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