General Electric Company

Thomas P Lockhart

Jeffrey H Wengrovius

John E Hallgren

Mary A White

Room temperature vulcanizable organopolysiloxane compositions are provided based on the use of a silanol or alkoxy terminated organopolysiloxane and an effective amount of a diorganotin dicarboxylate and an amine accelerator.

Room temperature vulcanizable organopolysiloxane compositions and method

Room temperature vulcanizable organopolysiloxane compositions are provided based on the use of a silanol or alkoxy terminated organopolysiloxane and an effective amount of a diorganotinbis(chelate) catalyst.

Stable, substantially acid-free, one-package moisture curable alkoxy terminated organopolysiloxane compositions are provided. These room temperature vulcanizable alkoxy terminated organopolysiloxane compositions use a condensation catalyst, a stabilizer, or scavenger for materials having chemically combined hydroxy radicals and diorganosulfoxide, such as dimethylsulfoxide which functions as a cure rate accelerator.

One package, stable, moisture curable, alkoxy-terminated

Stable, substantially acid-free, one package moisture curable alkoxy-terminated organopolysiloxane compositions are provided having a condensation catalyst and a stabilizer or scavenger for materials having chemically combined hydroxy radicals in the form of a molecular sieve.

Stable, substantially acid-free, one package moisture curable alkoxy-terminated organopolysiloxane compositions are provided having a condensation catalyst such as a tin compound, a silicon containing or silicon free organic scavenger for materials having chemically combined hydroxy radicals and certain organo nitrogen accelerators to effect a substantial enhancement in cure rate.

A method is provided for making a room temperature vulcanizable organopolysiloxane composition which is stabilized with an enoxy containing scavenger for hydroxy radicals which is used in combination with certain cure accelerators. The room temperature vulcanizable organopolysiloxane compositions can be allowed to age over an extended period of time under ambient conditions without any significant change in color occurring in the resulting room temperature vulcanizable composition.

Method for making an enoxy stabilized room temperature vulcanizable

Stable, substantially acid-free, one package moisture curable alkoxy-terminated organopolysiloxane compositions are provided having a condensation catalyst such as a tin compound and a silicon-free scavenger, such as an organic scavenger, for materials having chemically combined hydroxy radicals.

Stable, substantially acid-free, one package moisture curable alkoxy-terminated organopolysiloxane compositions are provided having a condensation catalyst and a stabilizer or scavenger for materials having chemically combined hydroxy radicals in the form of an N-silyl-substituted imidazole.

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Schenectady, NY, United States of America

Thomas P Lockhart