Modified asphaltite potting composition

Details Modified asphaltite potting composition Modified asphaltite potting composition

1975-09-17

1977-05-10

Lieberman, Allan

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

106279, 106281R, 252 635, C08K 336, C08L 9500, H01B 310, H01B 326

Patent

active

040226352

ABSTRACT:
A modified gilsonite base encapsulating system having improved sound suppression properties and rheologically controlled characteristics. In one aspect of the invention and in one form of the preferred embodiment, a potting compound is provided wherein the gilsonite is modified by thermal depolymerization. In another form of the preferred embodiment, the gilsonite is modified by the addition of a process oil having a viscosity gravity constant of 0.97 and a viscosity in SSU at 100.degree. C of 48.4 and comprises at least 21% by weight of the composition. Silica filler is added to produce a potting compound having quite unexpected sound suppression qualities.
In another aspect of the invention, a gilsonite based coil impregnant compound is provided to produce a material quite compatible with the potting compound. To approximately 75 - 80% of modified gilsonite is added about 20 - 25% by weight of ethylenediamine bisstearamide to produce a mixture having a softening point of from 125.degree. - 130.degree. C and a viscosity at 170.degree. C of from 78 to 118 centipoise.

REFERENCES:
patent: 2783162 (1957-02-01), Mollring
patent: 3747037 (1973-07-01), Earing
patent: 3851225 (1974-11-01), Luchetta

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