Thioester-functional organic polymers, method for preparing and compositions thereof
AssigneeMomentive Performance Materials Inc.
InventorsVikram Kumar, Matthew Pinnow
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Abstract
An organic polymer comprising an organic polymer fragment and at least one S-alkylsilyl hydrocarbonthioate group or at least one S-alkylstannyl hydrocarbonthioate group bonded to the backbone of the organic polymer fragment through a C—Si covalent bond and their methods or production are provided. The organic polymer backbone can be derived from the anionic polymerization of monomers containing C—C unsaturation. The silicon or tin atom can be further bonded to two alkoxy groups, two hydrocarbon groups or to one alkoxy group and one hydrocarbon group.
Claims28
An organic polymer comprising an organic polymer fragment and at least one S-alkylsilyl hydrocarbonthioate group or at least one S-alkylstannyl hydrocarbonthioate group bonded to the backbone of the organic polymer fragment through a C—Si covalent bond.
A method of making an organic polymer, comprising:
- reacting a chain of C—C unsaturated carbon atom monomers with an anionic initiator to form a first living anionic polymer intermediate,
- reacting the living anionic polymer intermediate with a compound containing a 2-thia-1-sila cycloalkane ring or 2-thia-1-stanna cycloalkane ring to form a second intermediate containing at least one thiolate group;
- and
- reacting the second intermediate with an acyl reactive group having the general formula (II):
- R1C(═O)X (II)
- wherein
- R1 is a monovalent alkyl, cycloalkyl, alkenyl, aryl or aralkyl group having 1 to 24 carbon atoms and X is chloride, bromide, iodide or a —SR10,
- R10 is a monovalent alkyl, cycloalkyl, alkenyl, aryl or aralkyl group having 1 to 12 carbon atoms to form the reaction product
- and a salt.
An S-alkylsilyl hydrocarbonthioate-terminated or S-alkylstannyl hydrocarbonthioate-terminated organic polymer.
An organic polymer composition comprising:
- a S-alkylsilyl hydrocarbonthioate-terminated polymer or a S-alkylstannyl hydrocarbonthioate-terminated organic polymer or a combination thereof;
- and
- a reinforcing material;
- optionally a curative;
- optionally a plasticizer;
- and
- optionally one or more additives.
Dependencies are inferred from the claim text.