Aqueous silicone dispersion cross-linkable into adhesive elastomer using condensation reaction mechanism

• Main Authors: C. FISCHER, D. CARDINAUD, M. FEDER
• Format: Patent
• Language: English
• Published: 24.09.1997
• Edition: 6
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

PCT No. PCT/FR95/01182 Sec. 371 Date May 2, 1997 Sec. 102(e) Date May 2, 1997 PCT Filed Sep. 14, 1995 PCT Pub. No. WO96/08529 PCT Pub. Date Mar. 21, 1996The present invention relates to an aqueous silicone dispersion, capable of being cross-linked into an elastomer by removing water and optionally alcohol and/or carboxylic acid, said dispersion being based on at least one polyorganosiloxane (A) having at least two condensable or hydrolysable ORa groups per molecule wherein Ra=H or alkyl, as well as at least one surficant (B). The technical problem consisting of perfecting a stable dispersion capable of being cross-linked into an elastomer that is highly adhesive on any support and that has suitable and economic mechanical properties is solved since this dispersion includes an amino-functionalised polyorganosiloxane (C) of the DTT(N)(OMe) resin type redistributed with aminoethylaminopropyltrimethoxysilane, optionally at least one hydroxylated and/or alkoxylated silicone resin (D), optionally at least on alkoxysilane (E) donating the -ORa terminals of the polydiorganosiloxane (A), optionally at least on condensation catalyst (F) and optionally at least one optionally siliceous filler (G).