Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From sulfur-containing reactant
Patent
1981-03-30
1982-12-28
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From sulfur-containing reactant
568 44, 568 45, 568 46, C08G 7500
Patent
active
043663079
ABSTRACT:
A non-crystallizing, water, solvent, fuel and temperature resistant liquid polythioether having two to four terminating radicals which do not substantially reduce the water, solvent, fuel and temperature resistance and a water, solvent, fuel and temperature resistant polymeric backbone having repeating units of the formula: ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower alkyl providing that a sufficient number of R.sub.1, R.sub.2, R.sub.3 and/or R.sub.4 are lower alkyl in said polymeric backbone to render said backbone non-crystallizing; X is a divalent organic radical selected from --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --S--CH.sub.2 --CH.sub.2 -- or --CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CH.sub.2 --; n is 8 to 200; and p is 0 or 1.
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Hutt Jack W.
Singh Hakam
Williams Morris E.
Marquis Melvyn I.
Products Research & Chemical Corp.
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