Claims
- 1. A process for preparing a modified diene polymer which comprises reacting an alkali metal-containing conjugated diene polymer with (a) a silicon or tin compound of the formula: R.sub.a MX.sub.b wherein R is an alkyl group having 1 to 4 carton atoms, M is a silicon atom or a tin atom, X is a halogen atom, a is 0, 1 or 2 and b is 2, 3 or 4, and
- an acrylamide compound of the formula (3): ##STR13## wherein R.sup.10 is a hydrogen atom or a methyl group, R.sup.11 and R.sup.12 are each an alkly group having 1 to 4 carbon atoms, and m is an integer;
- said alkali metal-containing conjugated diene polymer being a living polymer having an alkali metal end prepared by a polymerization of a conjugated diene monomer or a mixture of a conjugated diene monomer and an aromatic vinyl monomer in a hydrocarbon solvent in the presence of an alkali metal-based catalyst, or a diene polymer to which an alkali metal is introduced by an addition reaction of a diene polymer having conjugated diene units in the polymer chain and an alkali metal-based catalyst in a hydrocarbon solvent.
- 2. The process of claim 1, wherein said compound (a) is at least one member selected from the group consisting of silicon tetrachloride, silicon tetrabromide, trichloromethylsilane, trichlorobutylsilane, dichlorodimethylsilane, 1,2-bis(trichlorosilyl)ethane, tin tetrachloride, tin tetrabromide, methyltin trichloride, butyltin trichloride, tin dichloride, and bistrichlorosilyltin.
- 3. The process of claim 1, wherein said alkali metal-containing conjugated diene polymer is first reacted with said compound (a) and then with said compound (b).
- 4. The process of claim 1, wherein said alkali metal-based catalyst is a member selected from the group consisting of an alkali metal, an alkali metal hydrocarbon compound and a complex of an alkali metal with a polar compound.
- 5. The process of claim 1, wherein said alkali metal-containing conjugated diene polymer is in the form of a solution in a hydrocarbon solvent.
- 6. A rubber composition comprising a rubber component containing at least 10% by weight of a modified diene polymer and rubber additives, said modified diene polymer being a conjugated diene polymer modified by reacting an alkali metal-containing conjugated diene polymer selected from the group consisting of a conjugated diene polymer having an active metal end and an alkali metal addition product of a conjugated diene polymer with (a) a silicon or tin compound of the formula: R.sub.a MX.sub.b wherein R is an alkyl group having 1 to 4 carbon atoms, M is a silicon atom or a tin atom, X is a halogen atom, a is 0, 1 or 2 and b is 2, 3 or 4, and (b)
- an acrylamide compound of the formula (3): ##STR14## wherein R.sup.10 is a hydrogen atom or a methyl group, R.sup.11 and R.sup.12 are each an alkly group having 1 to 4 carbon atoms, and m is an integer;
Priority Claims (5)
Number |
Date |
Country |
Kind |
63-109454 |
May 1988 |
JPX |
|
63-114468 |
May 1988 |
JPX |
|
63-114469 |
May 1988 |
JPX |
|
63-115372 |
May 1988 |
JPX |
|
63-115373 |
May 1988 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 343,558 filed Apr. 27, 1989, now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0252992 |
Jan 1988 |
EPX |
0270071 |
Jun 1988 |
EPX |
Non-Patent Literature Citations (2)
Entry |
Patent Abstracts of Japan, vol. 11, No. 322 (C-453) (2769), Oct. 20, 1987 and JP-A-62 109 801 (Japan Synthetic Rubber Co. Ltd.) May 21, 1987. |
Jones, G. D. et al. "Water-Soluble Photocurable Elastomer." Journal of Applied Polymer Science, vol. 23 (1979) pp. 115-122. |
Continuations (1)
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Number |
Date |
Country |
Parent |
343558 |
Apr 1989 |
|