公开(公告)号：US20210070942A1

公开(公告)日：2021-03-11

申请号：US17053114

申请日：2019-05-10

申请人： ENI S.P.A. ,  CONSIGLIO NAZIONALE DELLE RICERCHE

发明人： Alberto Renato De Angelis ,  Giovanni Regattieri ,  Chiara Carrozza

IPC分类号： C08G75/14

摘要： Elastomeric terpolymer with a high sulfur content comprising:—sulfur in a quantity higher than or equal to 40% by weight, preferably ranging from 55% by weight to 90% by weight, with respect to the total weight of said elastomeric terpolymer;—a first monomer selected from aromatic vinyl compounds, preferably from styrene, divinylbenzene, vinyl toluene, tert-butylstyrene, p-methylstyrene, γ-methylstyrene, α-methylstyrene, vinylnaphthalene;—a second monomer selected from:—aromatic vinyl compounds, preferably from styrene, divinylbenzene, vinyl toluene, tert-butylstyrene, p-methylstyrene, γ-methylstyrene, α-methylstyrene, vinyl-naphthalene;—monomers having general formula (I): CH2═CH—(CH2)y—(X)n—(X)m—(CH2)x—CH═CH2, wherein:—X represents a sulfur atom, a selenium atom, a tellurium atom, preferably a sulfur atom, a selenium atom;—y and x, equal to or different from one another, are a whole number ranging from 0 to 4;—n and m, equal to or different from one another, are a whole number ranging from 0 to 3, at least one of n and m being equal to 1; said first monomer and said second monomer being present in a quantity lower than or equal to 60% by weight, preferably ranging from 10% by weight to 45% by weight, with respect to the total weight of said elastomeric terpolymer; said first monomer and said second monomer being different from one another. Said elastomeric terpolymer with a high sulfur content may be advantageously used in various applications such as, for example, thermal insulation, conveyor belts, transmission belts, flexible hoses and, in particular, in elastomeric compositions for tyres.