Phenolic resins from bisphenol a residual resins and mixtures of chloro-substituted hydrocarbons, and the use of specific phenolic resins as homogenizers for rubber vulcanizates

US5314986A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Pieter Ooms · Krefeld, DE
• Heinrich Schrage · Krefeld, DE
• Hans-Josef Buysch · Krefeld, DE
• Rene Loix · Leimen, DE
• Hans-Joachim Graf · Manheim, DE

Key dates

• Filing date: Dec 14, 1992
• Grant date: May 24, 1994
• Expiry date: Dec 14, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L21/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Rubber components of a vulcanizable rubber composition are homogenized by adding to the composition, prior to vulcanization, a phenolic resin formed by reacting a bisphenol A residual resin with chlorinated C.sub.4 to C.sub.8 hydrocarbons in the presence of a Friedel-Crafts alkylation catalyst.