Oxime containing compositions which crosslink in the presence of moisture to form elastomers at room temperature

US4503210A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• G/u/ nter Von Au · Campo Grande, BR
• Karl-Heinrich Wegehaupt · Burghausen, DE
• August Schiller · Neuötting, DE
• Karl Braunsperger · Burghausen, DE

Key dates

• Filing date: Jan 25, 1984
• Grant date: Mar 5, 1985
• Expiry date: Jan 25, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S528/901
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Compositions which are stable in the absence of moisture, but crosslink to form elastomers in the presence of moisture at room temperature comprising a diorganopolysiloxane having terminal condensable groups and a silicon compound having at least three oxime groups per molecule bonded to silicon via oxygen, in which a mixture containing a silane having four oxime groups bonded to a silicon atom via oxygen, and a silane having a hydrocarbon radical bonded to a silicon atom via a SiC-bonding and having three oxime groups bonded to the silicon atom via oxygen, or an oligomer of the silane mixture is substituted for at least a portion of the silicon compound having at least three oxime groups per molecule bonded to silicon via oxygen.