Modified polymethylhydrosiloxane, terminal modified conjugated diene-vinyl aromatic hydrocarbon copolymer and synthesis method for which, rubber composition and tire

1. A modified polymethylhydrosiloxane, comprising a compound represented by a formula (1),

wherein, E is a moiety containing an epoxide group,

T is a moiety containing an alkoxysilylalkyl group,

A is selected from the group consisting of hydrogen, a moiety containing an alkyl group, and a moiety containing an amino group,

B is a moiety containing an aryl group,

G is a moiety containing an ethyleneoxy group and an alkoxy group,

J is a moiety containing an ethyleneoxy group and a hydroxyl group,

e=5-45, t=1-4, a+b+g+j is equal to 1 to 595, and the moieties E are identical or different, the moieties T are identical or different, the moieties A are identical or different, the moieties B are identical or different, the moieties G are identical or different, the moieties J are identical or different.

2. The modified polymethylhydrosiloxane according to claim 1 , wherein a=170-400, b=0-45, g=1-30, j=0-75.

3. The modified polymethylhydrosiloxane according to claim 2 , wherein e=19-24.

4. The modified polymethylhydrosiloxane according to claim 2 , wherein g=1-5, the moiety G is —(C 3 H 6 )—(O—C 2 H 4 ) m —OR, R is a substituted or un-substituted C 1 -C 3 alkyl group, m=3-10.

5. The modified polymethylhydrosiloxane according to claim 2 , wherein t=3-4.

6. The modified polymethylhydrosiloxane according to claim 2 , wherein the moieties A are hydrogen, or a substituted or un-substituted C 2 -C 4 alkylene group, and/or a substituted or un-substituted C 1 -C 3 alkyl group.

7. The modified polymethylhydrosiloxane according to claim 2 , wherein the moiety B is a substituted or un-substituted C 6 -C 16 hydrocarbyl group containing an aryl group.

8. The modified polymethylhydrosiloxane according to claim 2 , wherein j=1-5, the moiety J is —(C 3 H 6 )—(O—C 2 H 4 ) n —OH, n=8-12.

9. The modified polymethylhydrosiloxane according to claim 1 , wherein, the moiety E is a 3-epoxidepropoxypropyl group, the moiety T is a trimethoxysilylethyl group, the moieties A of different repeat units are a methyl group and hydrogen respectively, the moiety B is a 4-phenethyl group, the moiety G is —(C 3 H 6 )—(O—C 2 H 4 ) m —OCH 3 , the moiety J is —(C 3 H 6 )—(O—C 2 H 4 ) n —OH, m=3-10, n=8-12.

10. A synthesis method for a terminal modified conjugated diene-vinyl aromatic hydrocarbon copolymer, comprising:

performing a polymerization step reacting conjugated diene monomer units with vinyl aromatic hydrocarbon monomer units to yield a conjugated diene-vinyl aromatic hydrocarbon copolymer having an active end; and

reacting the conjugated diene-vinyl aromatic hydrocarbon copolymer having the active end with a modifier to yield the terminal modified conjugated diene-vinyl aromatic hydrocarbon copolymer, wherein the modifier comprises the modified polymethylhydrosiloxane according to claim 1 .

11. A terminal modified conjugated diene-vinyl aromatic hydrocarbon copolymer, comprising:

a modified conjugated diene-vinyl aromatic hydrocarbon copolymer with a terminal having at least one residue of a modifier;

wherein the modifier comprises the modified polymethylhydrosiloxane according to claim 1 .

12. A rubber composition, comprising:

a carbon black;

a white carbon; and

the terminal modified conjugated diene-vinyl aromatic hydrocarbon copolymer according to claim 11 .

13. A tire, comprising the rubber composition according to claim 12 .