Back to results
US 7,119,146 B2Granted
Polymer blend compatibilization using isobutylene-based block copolymers II
AssigneeExxonMobil Chemical Patents Inc.
InventorsMun Fu Tse, Hsien Chang Wang, Ramanan Krishnamoorti, Andy H. Tsou
Life of this patent
Estimating the term…
Abstract
Compatibilized blends of an isoolefin polymer and an unsaturated diene polymer are prepared by utilizing a compatibilizing agent comprising a block/graft copolymer containing poly- or copoly-isoolefin segments and C4 to C6 alkyl-substituted styrene polymer segments, such as poly(t-butylstyrene) segments.
Claims22
A compatibilized polymer blend comprising:
- (a) an isoolefin polymer component selected from:
- (i) homopolymers of C4–C8 isoolefins;
- (ii) random copolymers comprising C4–C8 isoolefins with 0–10 wt % conjugated diene;
- (iii) halogenated random copolymers comprising C4–C8 isoolefins with 0–10 wt % conjugated diene;
- (iv) random copolymers comprising C4–C8 isoolefins with 0–20 wt % of a para-alkylstyrene;
- (v) halogenated random copolymers comprising C4–C8 isoolefins with 0–20 wt % of a para-alkylstyrene;
- (vi) random compolymers comprising 70–99.8 wt % isoolefin, 0.1 to 10 wt % conjugated diene, and 0.1–20 wt % para-alkylstyrene;
- (vii) halogenated random compolymers comprising 70–99.8 wt % isoolefin, 0.1 to 10 wt % conjugated diene, and 0.1–20 wt % para-alkylstyrene;
- (viii) random compolymers comprising 80–99 wt % isoolefin, 0.5–5 wt % conjugated diene, and 0.5–15 wt % para-alkylstyrene;
- (ix) halogenated random compolymers comprising 80–99 wt % isoolefin, 0.5–5 wt % conjugated diene, and 0.5–15 wt % para-alkylstyrene;
- and
- (x) their mixtures;
- (b) at least one olefinically unsaturated diene polymer;
- and
- (c) a compatibilizer for components (a) and (b) that is a block or graft copolymer comprising:
- (i) a recurring isoolefin-type moiety (iB) wherein the isoolefin-type moiety is selected from:
- I homopolymers of C4–C8 isoolefins;
- II random copolymers comprising C4–C8 isoolefins with 0–10 wt % conjugated diene;
- III random copolymers comprising C4–C8 isoolefins with 0–20 wt % of a para-alkylstyrene;
- IV random compolymers comprising 70–99.8 wt % isoolefin, 0.1 to 10 wt % conjugated diene, and 0.1–20 wt % para-alkylstyrene;
- and
- V random compolymers comprising 80–99 wt % isoolefin, 0.5–5 wt % conjugated diene, and 0.5–15 wt % para-alkylstyrene;
- and
- (ii) a recurring styrene-type moiety (S) wherein S is a para-t-butylstyrene segment (tbS).
21 more elements
A method of forming a compatibilized polymer blend by combining:
- a) an isoolefin polymer component selected from:
- (i) homopolymers of C4–C8 isoolefins;
- (ii) random copolymers comprising C4–C8 isoolefins with up to about 10 wt % conjugated diene;
- (iii) halogenated random copolymers comprising C4–C8 isoolefins with up to about 10 wt % conjugated diene;
- (iv) random copolymers comprising C4–C8 isoolefins with up to 20 wt % of a para-alkylstyrene;
- (v) halogenated random copolymers comprising C4–C8 isoolefins and up to 20 wt % of a para-alkylstyrene;
- (vi) random copolymers comprising 70–99.8 wt % isoolefin, 0.1 to 10 wt % conjugated diene, and 0.1–20 wt % para-alkylstyrene;
- (vii) halogenated random copolymers comprising 70–99.8 wt % isoolefin, 0.1 to 10 wt % conjugated diene, and 0.1–20 wt % para-alkylstyrene;
- (viii) random copolymers comprising 80–99 wt % isoolefin, 0.5–5 wt % conjugated diene, and 0.5–15 wt % para-alkylstyrene;
- (ix) halogenated random copolymers comprising 80–99 wt % isoolefin, 0.5–5 wt % conjugated diene, and 0.5–15 wt % para-alkylstyrene;
- and
- (x) mixtures thereof;
- b) at least one olefinically unsaturated diene polymer;
- and
- c) a compatibilizer for components (a) and (b) that is a block or graft copolymer comprising:
- (i) a recurring isoolefin-type moiety (iB) wherein the isoolefin-type moiety is selected from
- I homopolymers of C4–C8 isoolefins;
- II random copolymers comprising C4–C8 isoolefins with 0–10 wt % conjugated diene;
- III random copolymers comprising C4–C8 isoolefins with 0–20 wt % of a para-alkylstyrene;
- IV random copolymers comprising 70–99.8 wt % isoolefin, 0.1 to 10 wt % conjugated diene, and 0.1–20 wt % para-alkylstyrene;
- and
- V random copolymers comprising 80–99 wt % isoolefin, 0.5–5 wt % conjugated diene, and 0.5–15 wt % para-alkylstyrene;
- and
- (ii) a recurring styrene-type moiety (S) wherein S is a para-t-butylstyrene segment (tbS).
21 more elements
Dependencies are inferred from the claim text.