3747037 is referenced by 33 patents and cites 3 patents.

A urethane composition potting compound having improved vibration damping properties and rheologically controlled characteristics is obtained by means of an extender oil which is a petroleum oil of high aromaticity to lower the cost of the product and improve the physical and functional properties of the potting material; the extender oil has a viscosity gravity constant greater than 0.95 and comprises greater than 55 percent by weight of the composition.Prior to polymerization the oil extended isocyanate prepolymer and polyol is blended with silica so that the composition as a whole exhibits a quite unexpected combination of properties which make the product especially adapted for potting electrical components.

Title
Petroleum based oil modified castor oil-urethane composition for electrical potting
Application Number
05/198,811
Publication Number
3747037
Application Date
November 15, 1971
Publication Date
July 17, 1973
Inventor
Earing Mason H
Assignee
General Electric Company
IPC
C08g 22/08
C08G 18/10
C08G 18/36
C08K 05/01
C08K 05/00
C08K 03/36
C08K 03/00
C08G 18/00
H01B 03/30
H01F 27/02
H01F 27/33
H01F 41/00
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