Aminosilane initiators and functionalized polymers prepared therefrom
AssigneeBridgestone Corporation
InventorsDavid F. Lawson, Terrence E. Hogan, Christine Rademacher, David M. Roggeman, Fuminori Ota
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Abstract
Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
Claims21
An aminosilane functionalized polymer comprising at least one aminosilane group at its head only, where the at least one aminosilane group at the head comprises residue from the reaction product of
- (a) at least one metallating agent, and
- (b) at least one alkylaminosilane compound selected from either bis-(dialkylamino)phenylmethylsilane, bis-(hexamethyleneimino)phenylmethylsilane, tris-(dialkylamino)allylsilane, tris-(dialkylamino)alkylsilane wherein the alkyl on the silane is selected from methyl, ethyl, or propyl and combinations thereof
- or from
- where n is a whole number selected from the group consisting of 0 and 1, and m is a whole number selected from the group consisting of 2-3, with the proviso that the sum of m and n equals 3;
- where T is a methyl, ethyl, propyl, or allylic group;
- where each R4 is independently a hydrocarbyl group;
- where each R6 is independently a hydrocarbylene and
- where the aminosilane functionalized polymer is polymerized from at least one anionically polymerizable monomer comprising 1,3-butadiene with a metalating agent to monomer molar ratio of 1:10 to 1:20,000;
- where the aminosilane functionalized polymer does not have two or more living polymer chains coupled together with a coupling agent selected from formula (1) R*nM1Y(4-n) where each R* is independently a monovalent organic group having 1 to 20 carbon atoms, M1 is a tin, silicon or germanium atom, Y is a halogen atom and n of formula (1) is an integer of 0-3;
- and
- where the aminosilane functionalized polymer has a Mn of greater than 25 kg/mole to about 200 kg/mole.
An aminosilane functionalized polymer comprising at least one aminosilane group at its head only, where the at least one aminosilane group at the head comprises residue from the reaction product of
- (a) at least one metallating agent, and
- (b) at least one alkylaminosilane compound selected from bis-(dialkylamino)phenylmethylsilane, bis-(hexamethyleneimino)phenylmethylsilane, tris-(dialkylamino)allylsilane, tris-(dialkylamino)alkylsilane wherein the alkyl on the silane is selected from methyl, ethyl, or propyl and combinations thereof, and
- where the aminosilane functionalized polymer is polymerized from at least one anionically polymerizable monomer comprising 1,3-butadiene with a metalating agent to monomer molar ratio of 1:10 to 1:20,000;
- where the aminosilane functionalized polymer does not have two or more living polymer chains coupled together with a coupling agent selected from formula (1) R*nM1Y(4-n) where each R* is independently a monovalent organic group having 1 to 20 carbon atoms, M1 is a tin, silicon or germanium atom, Y is a halogen atom and n of formula (1) is an integer of 0-3;
- and
- where the aminosilane functionalized polymer has a Mn of greater than 25 kg/mole to about 200 kg/mole.
An aminosilane functionalized polymer comprising at least one aminosilane group at its head only, where the at least one aminosilane group at the head comprises residue from the reaction product of
- (a) at least one metallating agent, and
- (b) at least one alkylaminosilane compound having the formula
- where n is a whole number selected from the group consisting of 0 and 1, and m is a whole number selected from the group consisting of 2-3, with the proviso that the sum of m and n equals 3;
- where T is a methyl, ethyl, propyl, or allylic group;
- where each R4 is independently a hydrocarbyl group;
- where each R6 is independently a hydrocarbylene, and
- where the aminosilane functionalized polymer is polymerized from at least one anionically polymerizable monomer comprising 1,3-butadiene with a metalating agent to monomer molar ratio of 1:10 to 1:20,000;
- where the aminosilane functionalized polymer does not have two or more living polymer chains coupled together with a coupling agent selected from formula (1) R*nM1Y(4-n) where each R* is independently a monovalent organic group having 1 to 20 carbon atoms, M1 is a tin, silicon or germanium atom, Y is a halogen atom and n of formula (1) is an integer of 0-3;
- and
- where the aminosilane functionalized polymer has a Mn of greater than 25 kg/mole to about 200 kg/mole.
Dependencies are inferred from the claim text.