Preparation and use of reactive and processable fluoropolymers

US5698635A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Ralf Kruger · Bensberg, DE
• David Harrison · Leverkusen, DE
• Dieter Wrobel · Leverkusen, DE

Key dates

• Filing date: Nov 2, 1995
• Grant date: Dec 16, 1997
• Expiry date: Nov 2, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2810/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A reactive and processable fluoropolymer, obtainable by mechanical shearing of PA1 a fluoropolymer A) comprising polymerized monomer units of at least one fluorinated, optionally substituted, alkene with 2 to 8 carbon atoms and PA1 optionally at least one member selected from the group consisting of a perfluorinated vinyl ether, non-fluorinated olefin and non-fluorinated vinyl ester, and PA1 0.3 to 7% of a compound B) which possesses PA1 a double bond (I) capable of adding to polymeric radical fragments and PA1 a II-electron system which is either conjugated with double bond (I) or has readily transferrable hydrogen atoms in the allyl or benzyl position and PA1 optionally further double bonds or reactive groups and PA1 optionally further auxiliary agents (C). The fluoropolymer is especially useful in radical addition or nucleophilic or electrophilic substitution or addition, e.g. cross-linking or grafting.