Cross-linkable polymers, method for the production thereof, and shaped bodies made of cross-linked polymers

US6528585B1 · kind B1 · utility

Assignee

• Degussa AG · DE

Inventors

• Burkhard Standke · Soest, DE
• Jaroslaw Monkiewicz · Rheinfelden (Baden), DE
• Albert-Johannes Frings · Rheinfelden (Baden), DE
• Ralf Laven · Niederdossenbach, DE
• Roland Edelmann · Wehr, DE
• Peter Jenkner · Rheinfelden (Baden), DE
• Helmut Mack · Ludwigshafen, DE
• Michael Horn · Rheinfelden (Baden), DE

Key dates

• Filing date: Jul 19, 2001
• Grant date: Mar 4, 2003
• Expiry date: Jul 19, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F291/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing crosslinkable polymers containing silane groups having at least one hydrolyzable radical by free-radical-initiated grafting of the base polymers with an olefinically unsaturated silane having at least one hydrolyzable radical, wherein the grafting is carried out in the presence of(a) an alkylsilane of the formula I,R1(SiR2nX3−n)m,  (I) whereR1 is a monovalent hydrocarbon radical having from 1 to 33 carbon atoms or a divalent hydrocarbon radical having from 4 to 24 carbon atoms,R2 is a hydrocarbon radical having from 1 to 10 carbon atoms,X are identical or different hydrolyzable radicals,n is 0, 1 or 2 andm is 1 or 2 and/or(b) a fluoroalkylsilane of the formulaR3xSiR4yXz,  (II) whereR3 is a fluoroalkyl radical,R4 is an alkyl radical andX is a hydrolyzable radical,x is an integer from 1 to 3,y is 0, 1 or 2 andz is an integer from 1 to 3, with the proviso that the sum x+y+z=4.