Accession Number : AD0164139

Title :   Method of Rehardening Encapsulating Compositions.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Augl,Joseph M. ; Bailey,William J. ; Erickson,Porter W.

Report Date : 18 JUL 1972

Pagination or Media Count : 5

Abstract : The patent describes a method of hardening encapsulating (potting) compositions containing a linkage that is susceptible to hydrolytic cleavage i.e., polyamides, polyester and polyester base type polyurethanes, which are either in the virgin state or which have deteriorated due to exposure to a hot, moist environment. It prescribes contact with a chemical hardening agent selected from the group consisting of multifunctional isocyanates, multifunctional epoxides, multifunctional isothiocyanates, carbodiimides and mixtures thereof which may also contain a constituent selected from the group consisting of monoisocyanates, monoepoxides, monoisothiocyanates and mixture thereof.

Descriptors :   (*Patents, Hardening), (*Hardening, *Potting compounds), Isocyanates, Epoxy compounds, Imides, Encapsulation, Plastics, Hydrolysis, Polyamide plastics, Polyurethane resins, Polyester plastics

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE