Room temperature vulcanizable organopolysiloxane compositions and method for making

Claim 2

A stable, moisture curable room temperature vulcanizable organopolysiloxane composition substantially free of organic solvent and scavenger for hydroxy functional material which is capable of substantially maintaining the same tack-free time as when freshly mixed after and extended shelf period at ambient conditions in a moisture-resistant moisture free container, comprising by weight: (A) 100 parts of a polydiorganosiloxane having terminal polyalkoxy siloxy units, (B) 0.1 to 10 parts of a polyalkoxy silane, (C) 0.05 to 5 parts of an amine accelerator selected from the class consisting of primary amines, secondary amines, silyl-substituted alkyl guanidines and alkyl-substituted guanidines, (D) up to 700 parts of filler, and (E) an effective amount of a tin carboxylate condensation catalyst selected from the class consisting of di-n-butyltindiethylmalonate, di-n-octyltindiethylmalonate, di-n-octyltinsuccinate, di-n-octyltinoxylate, di-n-butyltinhexahydrophthalate, di-n-butyltinglutamate, di-n-butyltin(2-cyanoglutarate), and di-n-pentyltinphthalate.

Claim 3

A composition in accordance with claim 1, where the carboxylate tin catalyst is di-n-butyltindiethylmalonate.

Claim 4

A composition in accordance with claim 1, where the tin catalyst is di-n-octyltindiethylmalonate.

Claim 5

A composition in accordance with claim 1, where the tin catalyst is di-n-octyltinsuccinate.

Claim 6

A composition in accordance with claim 1, where the tin catalyst is di-n-octyltinoxylate.

Claim 7

A composition in accordance with claim 1, where the tin catalyst is di-n-butyltinhexahydrophthalate.

Claim 8

A composition in accordance with claim 1, where the tin catalyst is di-n-butyltinglutamate.

Claim 9

A composition in accordance with claim 1, where the tin catalyst is di-n-butyltin(2-cyanoglutarate).

Claim 10

A composition in accordance with claim 1, where the tin catalyst is di-n-pentyltinphthalate.

Claim 11

A stable, moisture curable room temperature vulcanizable organopolysiloxane composition useful as a construction sealant and caulking compound which is substantially free of organic solvent and scavenger for hydroxy functional material consisting essentially of by weight (A) 100 parts of a silanol terminated polydiorganosiloxane, (B) 0.1 to 10 parts of a polyalkoxy silane, (C) 0.05 to 5 parts of an amine accelerator selected from the class consisting of primary amines, secondary amines, silyl-substituted alkyl guanidines and alkyl-substituted guanidines, (D) up to 700 parts of filler, and (E) an effective amount of a tin dicarboxylate condensation catalyst selected from the class consisting of di-n-butyltindiethylmalonate, di-n-octyltindiethylmalonate, di-n-octyltinsuccinate, di-n-octyltinoxylate, di-n-butyltinhexahydrophthalate, di-n-butyltinglutamate, di-n-butyltin(2-cyanoglutarate), di-n-pentyltinphthalate, and dimethyltinadipate.

Claim 12

A stable, moisture curable room temperature vulcanizable organopolysiloxane composition useful as a construction sealant and caulking compound which is substantially free of organic solvent and scavenger for hydroxy functional material consisting essentially of by weight (A) 100 parts of a silanol terminated polydiorganosiloxane, (B) 0.1 to 10 parts of a polyalkoxy silane, (C) 0.05 to 5 parts of an amine accelerator selected from the class consisting of primary amines, secondary amines, silyl-substituted alkyl guanidines and alkyl-substituted guanidines, (D) up to 700 parts of filler, and (E) an effective amount of a tin dicarboxylate condensation catalyst selected from the class consisting of di-n-butyltindiethylmalonate, di-n-octyltindiethylmalonate, di-n-octyltinsuccinate, di-n-octyltinoxylate, di-n-butyltinhexahydrophthalate, di-n-butyltinglutamate, di-n-butyltin(2-cyanoglutarate), di-n-pentyltinphthalate, and dimethyltinadipate.

Claim 13

A composition in accordance with claim 10, where the tin catalyst is di-n-butyltindiethylmalonate.

Claim 14

A composition in accordance with claim 10, where the tin catalyst is di-n-octyltindiethylmalonate.

Claim 15

A composition in accordance with claim 10, where the tin catalyst is di-n-octyltinsuccinate.

Claim 16

A composition in accordance with claim 10, where the tin catalyst is di-n-octyltinoxylate.

Claim 17

A composition in accordance with claim 10, where the tin catalyst is di-n-butyltinhexahydrophthalate.

Claim 18

A composition in accordance with claim 10, where the tin catalyst is di-n-butyltinglutamate.

Claim 19

A composition in accordance with claim 10, where the tin catalyst is di-n-butyltin(2-cyanoglutarate).

Claim 20

A composition in accordance with claim 10, where the tin catalyst is di-n-pentyltinphthalate.

Claim 21

A composition in accordance with claim 10, where the tin catalyst is dimethyltinadipate.

Claim 22

A stable, moisture curable room temperature vulcanizable organopolysiloxane composition substantially free of organic solvent and scavenger for hydroxy functional material which is capable of substantially maintaining the same tack-free time as when freshly mixed after an extended shelf period at ambient conditions in a moisture-resistant moisture free container, comprising by weight: (A) 100 parts of a polydiorganosiloxane having terminal polyalkoxy siloxy units, (B) 0.1 to 10 parts of a polyalkoxy silane, (C) 0.05 to 5 parts of an amine accelerator selected from the class consisting of primary amines secondary amines, silyl-substituted alkyl guanidines and alkyl-substituted guanidines, (D) up to 700 parts of filler, and (E) an effective amount of a tin dicarboxylate condensation catalyst having the formula (R).sub.2 Sn[Y], where Y is a dicarboxylate group having the formula, ##STR7## R is selected from C.sub.(1-18) monovalent hydrocarbon radicals and substituted C.sub.(1-18) monovalent hydrocarbon radicals, R 1 is a C.sub.(3-9) dialkyl substituted methylene, and a is a whole number having a value of 0 or 1.

Claim 23

A stable, moisture curable room temperature vulcanizable organopolysiloxane composition substantially free of organic solvent and scavenger for hydroxy functional material which is capable of substantially maintaining the same tack-free time as when freshly mixed after an extended shelf period at ambient conditions in a moisture-resistant moisture free container, comprising by weight: (A) 100 parts of a polydiorganosiloxane having terminal polyalkoxy siloxy units, (B) 0.1 to 10 parts of a polyalkoxy silane, (C) 0.05 to 5 parts of an amine accelerator selected from the class consisting of primary amines secondary amines, silyl-substituted alkyl guanidines and alkyl-substituted guanidines, (D) up to 700 parts of filler, and (E) an effective amount of a tin dicarboxylate condensation catalyst having the formula (R).sub.2 Sn[Y], where Y is a dicarboxylate group having the formula, ##STR7## R is selected from C.sub.(1-18) monovalent hydrocarbon radicals and substituted C.sub.(1-18) monovalent hydrocarbon radicals, R 1 is a C.sub.(3-9) dialkyl substituted methylene, and a is a whole number having a value of 0 or 1.

Claim 24

A stable, moisture curable room temperature vulcanizable organopolysiloxane composition useful as a construction sealant and caulking compound which is substantially free of organic solvent and scavenger for hydroxy functional material consisting essentially of by weight (A) 100 parts of a silanol terminated polydiorganosiloxane, (B) 0.1 to 10 parts of a polyalkoxy silane, (C) 0.05 to 5 parts of an amine accelerator selected from the class consisting of primary amines, secondary amines, silyl-substituted alkyl guanidines and alkyl-substituted guanidines, (D) up to 700 parts of filler, and (E) an effective amount of a tin dicarboxylate condensation catalyst having the formula (R).sub.2 Sn[Y], where Y is a dicarboxylate group having the formula, ##STR8## R is selected from C.sub.(1-18) monovalent hydrocarbon radicals and substituted C.sub.(1-18) monovalent hydrocarbon radicals, R 1 is a C.sub.(3-9) dialkyl substituted methylene, and a is a whole number having a value of 0 or 1.

Claim 25

A stable, moisture curable room temperature vulcanizable organopolysiloxane composition useful as a construction sealant and caulking compound which is substantially free of organic solvent and scavenger for hydroxy functional material consisting essentially of by weight (A) 100 parts of a silanol terminated polydiorganosiloxane, (B) 0.1 to 10 parts of a polyalkoxy silane, (C) 0.05 to 5 parts of an amine accelerator selected from the class consisting of primary amines, secondary amines, silyl-substituted alkyl guanidines and alkyl-substituted guanidines, (D) up to 700 parts of filler, and (E) an effective amount of a tin dicarboxylate condensation catalyst having the formula (R).sub.2 Sn[Y], where Y is a dicarboxylate group having the formula, ##STR8## R is selected from C.sub.(1-18) monovalent hydrocarbon radicals and substituted C.sub.(1-18) monovalent hydrocarbon radicals, R 1 is a C.sub.(3-9) dialkyl substituted methylene, and a is a whole number having a value of 0 or 1.