Aminosilane Initiators And Functionalized Polymers Prepared Therefrom
AssigneeBridgestone Corporation
InventorsDavid F. Lawson, Terrence E. Hogan, Christine M. 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.
Claims20
A metallated aminosilane compound for initiating an anionic polymerization comprising the reaction product of
- (1) at least one metallating agent, and
- (2) at least one alkylaminosilane compound having the formula
- where n is a whole number selected from the group consisting of 0-2, and m is a whole number selected from the group consisting of 1-3, 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 and R5 is independently a hydrocarbyl group;
- where each R6 is independently a hydrocarbylene;
- and where one or more R5 may form a bridge between two nitrogen atoms when m is greater than 1.
The metallated aminosilane compound of claim 2, where the at least one metallating agent is selected from the group consisting of hydrocarbyl lithium compounds, hydrocarbyl sodium compounds, hydrocarbyl potassium compounds, and hydrocarbyl magnesium compounds, and combinations thereof.
A polymer comprising residue from an initiator, where the initiator comprises the reaction product of
- (1) at least one metallating agent, and
- (2) at least one alkylaminosilane compound having the formula
- where n is a whole number selected from the group consisting of 0-2, and m is a whole number selected from the group consisting of 1-3, 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 and R5 is independently a hydrocarbyl group;
- where each R6 is independently a hydrocarbylene;
- and where one or more R5 may form a bridge between two nitrogen atoms when m is greater than 1.
Dependencies are inferred from the claim text.