Abstract:
There are provided novel triene hydrocarbons, having at least two conjugated double bonds, and being of the general formula IN WHICH A is a radical consisting of a ring containing an endomethylene group; B may be both a linear alkadiene radical and a substituted and unsubstituted alkene or cycloalkene radical; Ro may be hydrogen, an aryl or an alkyl radical, n is a number ranging from 0 to 3; and m is 0 or 1. If n is not 0, m is 0; if n is 0, m is 0 or 1.
Abstract:
Triene hydrocarbons containing two conjugated double bonds, represented by the formula: WHEREIN R1, R2, R3, R4, R and R'' may be hydrogen, alkyl or aryl radicals, and which may be prepared through a Diels-Alder reaction between a cyclopentadiene and (a) a dihalide-alkenyl compound, followed by dehydrohalogenation with basic agents, or (b) esters of fumaric or maleic acid, followed by reaction with a Grignard''s reagent and then by dehydration of the alcohol, are disclosed.
Abstract:
Vulcanizable olefin tetrapolymers are described which are comprised of ethylene, an alpha-olefin having at least three carbon atoms, at least one conventional terpolymer such as endoand exo-dicyclopentadiene, and a minor amount of a polycyclic polyene represented by the formula A-(CH2)n-B, wherein A is a radical consisting of or containing at least one cyclohexane ring with or without an endomethylene bridge, B is a cyclodiene radical and n is a number ranging from 0 to 5.
Abstract:
A method is described whereby olefin terpolymers, consisting of ethylene, an alpha olefin and a polyene having in the molecule, in addition to the double bond participating in the formation of the macromolecule, at least one conjugated double bond system, are stabilied against oxidative aging without destroying their characteristic high vulcanization rate by reacting them with a dienophilic agent represented by one of the following formulae:
WHEREIN R and R6 may be an alkyl, alkenyl, cycloalkyl, aryl or aralkyl radical having up to 8 carbon atoms, R1, R2, R3, R4 and R5 may be hydrogen or alkyl, aryl, cycloalkyl or aralkyl radicals having up to 8 carbon atoms, the R1-R2 and R-R pairs may be divalent radicals forming condensed rings.