Curable compositions comprising unsaturated polyolefins
AssigneeDow Global Technologies LLC
InventorsJeffrey C. Munro, Colin Li Pi Shan, Johnathan E. DeLorbe, Juan C. Tuberquia, Lixin Sun, Endre Szuromi, Edmund M. Carnahan
Life of this patent
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Abstract
The present disclosure relates to unsaturated polyolefins and processes for preparing the same. The present disclosure further relates to curable formulations comprising the unsaturated polyolefins that show improved crosslinking.
Claims15
A curable composition comprising (A) a polyolefin component and (B) a curing component comprising a cross-linking agent, wherein the (A) polyolefin component comprises an unsaturated polyolefin of the formula A1L1, and wherein:
- L1 is a polyolefin;
- A1 is selected from the group consisting of a vinyl group, a vinylidene group of the formula CH2═C(Y1)—, a vinylene group of the formula Y1CH═CH—, a mixture of a vinyl group and a vinylene group of the formula Y1CH═CH—, a mixture of a vinyl group and a vinylidene group of the formula CH2═C(Y1)—, a mixture of a vinylidene group of the formula CH2═C(Y1)— and a vinylene group of the formula Y1CH═CH—, and a mixture of a vinyl group, a vinylidene group of the formula CH2═C(Y1)—, and a vinylene group of the formula Y1CH═CH—;
- and
- Y1 at each occurrence independently is a C1 to C30 hydrocarbyl group.
The composition of any of the preceding claims, wherein the formulation comprises from 80 wt % to 99.99 wt % of the (A) polyolefin component and from 0.01 wt % to 20 wt % of the (B) curing component comprising the cross-linking agent.
The composition of any of the preceding claims, wherein L1 is an ethylene/alpha-olefin copolymer comprising units derived from ethylene and a C3 to C30 alpha-olefin.
The composition of any of the preceding claims, wherein the C3 to C30 alpha-olefin is selected from the group consisting of propylene, 1-butene, 1-hexene, and 1-octene.
The composition of any of the preceding claims, wherein the hindered double bond is selected from the group consisting of the double bond of a vinylidene group, the double bond of a vinylene group, the double bond of a trisubstituted alkene, and the double bond of a vinyl group attached to a branched alpha carbon.
The composition of any of the preceding claims, wherein A2 a C3 to C30 cyclic hydrocarbyl group or a C3 to C30 acyclic hydrocarbyl group.
The composition of any of the preceding claims, wherein A2 is selected from the group consisting of an unsubstituted cycloalkene, an alkyl-substituted cycloalkene, and an acyclic alkyl group.
The composition of any of the preceding claims, wherein A2 is selected from the group consisting of:
- wherein the endocyclic double bond in (AC) and (AF) may be between any two adjacent carbon atoms that are ring members, and wherein the pendant methyl group of (AF) may be connected to any carbon atom that is a ring member.
The composition of any of the preceding claims, wherein each of the unsaturated polyolefin of the formula A1L1 and the telechelic polyolefin of the formula A1L1L2A2 in the (A) polyolefin component comprises a weight average molecular weight (Mw) range from 1,000 to 1,000,000 g/mol.
The curable composition of any of preceding claims, wherein L1 of the unsaturated polyolefin of the formula A1L1 is covalently bonded to A1 through a carbon-carbon single bond.
The composition of any of the preceding claims, wherein the (b) curing component further comprises a co-agent.
The composition of any of the preceding claims further comprising from 0 to 10 wt % of (C) an additive component.
The composition of any of the preceding claims, wherein the (C) additive component comprises zinc oxide and/or stearic acid.
Dependencies are inferred from the claim text.