Abstract: A composition of matter is disclosed that comprises at least one silane coupling agent for coupling an elastomer and a filler wherein said silane comprises at least one hydrolyzable group that, upon compounding said silane with said elastomer and filler, is released to yield a compound that improves downstream processability of the compounded composition or the properties of the final rubber product or both.

Abstract: Disclosed herein is a process of manufacturing a filled rubber comprising the steps of: mixing a rubber, an inorganic filler, and a blocked mercaptosilane of a structure defined herein, to produce a rubber mixture; mixing into the rubber mixture; (i) a deblocking agent to deblock the blocked mercaptosilane, and (ii) a curing agent; and allowing the rubber mixture to cure.

Abstract: Blocked mercaptosilanes are provided in which the blocking group contains and unsaturated heteroatom or carbon chemically bound directly to sulfur via a single bond. This blocking group optionally may be substituted with one or more carboxylate ester or carboxylic acid functional groups. These silanes are used in manufacture of inorganic filled rubbers, with the silanes deblocked by a deblocking agent. Synthesis of the blocked mercaptosilanes is also provided.

Abstract: A blocked mercaptosilane of the structure: G-C(?O)—S—CH2CH2CH2SiX3 is disclosed wherein each X is an independently selected RO— group or R— group wherein each R is independently selected from the group consisting of hydrogen, alkyl that may or may not contain unsaturation, alkenyl groups, aryl groups, and aralkyl groups, such moieties other than hydrogen having from 1 to 18 carbon atoms, at least one X is RO—, and G is a monovalent alkyl group.

Abstract: Disclosed herein is a blocked mercaptosilane selected from the group consisting of [[(ROC(?O))p—(G)j]k—Y—S]r—G—(SiX3)s; and??(1) [(X3Si)q—G]a—[Y—[S—G—SiX3]b]c??(2) wherein Y is a polyvalent species (Q)zA(?E) selected from the group consisting of —C(?NR)—; —SC(?NR)—; —SC(?O)—; —OC(?O)—; —S(?O)—; —S(?O)2—; —OS(?O)2—; (—NR)S(?O)2—; —SS(?O)—; —OS(?O)—; (—NR)S(?O)—; —SS(?O)2—; (—S)2P(?O)—; —(—S)P(?O)—; —P(?O)(—)2; (—S)2P(?S)—; —(—S)P(?S)—; —P(?S)(—)2; (—NR)2P(?O)—; (—NR)(—S)P(?O)—; (—O)(—NR)P(?O)—; (—O)(—S)P(?O)—; (—O)2P(?O)—; —(—O)P(?O)—; —(—NR)P(?O)—; (—NR)2P(?S)—; (—NR)(—S)P(?S)—; (—O)(—NR)P(?S)—; (—O)(—S)P(?S)—; (—O)2P(?S)—; —(—O)P(?S)—; and —(—NR)P(?S)—; wherein the atom A attached to unsaturated heteroatom E is attached to the sulfur which in turn is linked via a group G to the silicon atom; each R is chosen independently from hydrogen, straight, cyclic, or branched alkyl that may or may not contain unsaturation, alkenyl groups, aryl groups, and aralkyl groups, with each R containing from 1 to 18 c

Abstract: A blocked mercaptosilane of the structure: G-C(═O)—S—CH2CH2CH2SiX3 is disclosed wherein each X is an independently selected RO— group or R— group wherein each R is independently selected from the group consisting of hydrogen, alkyl that may or may not contain unsaturation, alkenyl groups, aryl groups, and aralkyl groups, such moieties other than hydrogen having from 1 to 18 carbon atoms, at least one X is RO—, and G is a monovalent alkyl group.

Abstract: A composition of matter is disclosed that comprises at least one silane coupling agent for coupling an elastomer and a filler wherein said silane comprises at least one hydrolysable group that, upon compounding said silane with said elastomer and filler, is released to yield a compound that improves downstream processability of the compounded composition or the properties of the final rubber product or both.

Abstract: Disclosed herein is a rubber composition comprising: a) a blocked mercaptosilane of a defined structure, wherein the blocking group contains an unsaturated heteroatom or carbon chemically bound directly to sulfur via a single bond and, optionally, may be substituted with one or more carboxylate ester or carboxylic acid functional groups; b) an organic polymer; c) a filler; and d) a deblocking agent.

Abstract: Disclosed herein is a rubber composition comprising:

Abstract: Disclosed herein are blocked mercaptosilane condensates that are useful as coupling agents in mineral filled elastomer compositions. Among the advantages in the use of these blocked mercaptosilane condensates over the use of previously described blocked mercaptosilanes are the release of less volatile organic compounds during the elastomer compounding process and lower coupling agent loading requirements.

Abstract: A composition of matter is disclosed wherein the composition comprises: A) at least one latent mercaptosilane coupling agent; and B) at least one additional mercaptan. Preferably, the composition comprises: A) at least one sulfur vulcanizable rubber; B) at least one latent mercaptosilane coupling agent; C) at least one latent mercaptosilane activator; D) at least one filler; and, optionally, E) at least one additional mercaptosilane. A two pass process for preparing cured articles, such as tires and/or tire treads, which employs the composition is also disclosed.

Abstract: A blocked mercaptosilane of the structure: G—C(═O)—S—CH2CH2CH2SiX3 is disclosed wherein each X is an independently selected RO— group wherein each R is independently selected from the group consisting of hydrogen, alkyl that may or may not contain unsaturation, alkenyl groups, aryl groups, and aralkyl groups, such moieties other than hydrogen having from 1 to 18 carbon atoms, and G is a monovalent alkyl of from 2 to 12 carbon atoms.

Abstract: A composition is disclosed that comprises a blend of:

Abstract: This invention describes novel chemical compounds whose structures are hybrids between sulfur-containing and non-sulfur-containing silanes wherein the two types of silanes are linked by siloxane bonds. The invention includes methods of preparation for the hybrid silanes as well as their use in filled rubbers as coupling agents. The hybrid silanes described are unique in that a certain amount of water in their preparation leads to superior performance in their intended application, and that they can thus be produced more efficiently and safely than coupling agents currently used in the art, from readily available hydrated raw materials.

Abstract: Disclosed herein is a process for the manufacture of a blocked mercaptosilane wherein the process is selected from the group consisting of: (1) reacting a mercaptosilane and a monoacid anhydride corresponding to a thioester group present in the desired product; (2) reacting an alkali salt of a mercaptosilane with the appropriate acid anhydride or acid halide; (3) transesterifying a mercaptosilane and an ester in the presence of an alkali metal of an acid corresponding to the ester; (4) transesterifying a thioester silane and another ester; (5) transesterifying a 1-sila-2-thiacyclopentane or a 1-sila-2-thiacyclohexane and an ester; and (6) reacting an alkali metal salt of a thioacid with a haloalkylsilane.

Abstract: An improvement on existing methods to desulfurize oligosulfide silanes generates no added raw materials or waste streams in addition to the sodium chloride which is generated as a byproduct in the current manufacturing process for polyusulfide silanes. This is accomplished by using mercaptosilane salts as desulfurizing agents, which yield more product in addition to that already obtained from the desulfurized silane of higher sulfur rank. The process simply entails reacting an oligosulfide silane with a mercaptosilane salt to thereby obtain an oligosulfide silane whose average sulfur rank is less than the starting oligosulfide silane. Coproduct sulfide salts can be recycled back to the oligosulfide manufacturing process. The mercaptosilane salts are novel materials as well.

Abstract: A composition of matter is disclosed wherein the composition comprises:

Abstract: Disclosed herein is a rubber composition comprising:

Abstract: This invention describes novel blocked mercaptosilanes wherein the hydrogen atom of the mercaptan functionality has been substituted. The invention includes methods of preparation for the blocked mercaptosilicon compounds as well as their use in filled rubbers. The blocked mercaptosilanes described are unique in that they allow the mixing of fillers with organic polymers to proceed while remaining inert toward coupling to the polymer. The coupling reactions of these blocked mercaptosilicon compounds are triggered by addition of an appropriate deblocking agent.

Abstract: Disclosed herein is a blocked mercaptosilane selected from the group consisting of