Polyethylene compatible sulphonic acids as silane crosslinking catalysts

US6005055A · kind A · utility

Assignee

• Borealis A/S · DK

Inventors

• Ruth Dammert · Stenungsund, SE
• Bill Gustafsson · Stenungsund, SE
• Bernt-Ake Sultan · Lund, SE

Key dates

• Filing date: Jul 30, 1996
• Grant date: Dec 21, 1999
• Expiry date: Jul 30, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/42
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A crosslinkable polymer composition contains a crosslinkable polymer with hydrolysable silane groups and at least one silanol condensation catalyst. The polymer composition is distinguished by the silanol condensation catalyst being a compound of the formula ArSO.sub.3 H (I) or a precursor thereof, Ar being a substituted benzene or naphthalene ring, the substituent or substituents containing 4-20 carbon atoms, preferably 10-18 carbon atoms. The precursor may be an anhydride of the sulphonic acid of formula (I), or a sulphonic acid of formula (I) provided with a hydrolysable protective group, eg. an acetyl group. Specific examples of compounds of formula (I) are dodecyl benzene sulphonic acid and tetrapropyl benzene sulphonic acid.