Search International and National Patent Collections

1. (WO2017153050) PROCESS FOR THE PREPARATION OF NOVOLAC ALKYLPHENOL RESINS

Pub. No.:    WO/2017/153050    International Application No.:    PCT/EP2017/000315
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri Mar 10 00:59:59 CET 2017
IPC: B60C 1/00
C08G 8/00
C08L 9/00
C08L 61/00
Applicants: SUMITOMO BAKELITE EUROPE N.V.
Inventors: VANORMELINGEN, Wouter
SCHOOFS, Bart
DE SMEDT, Tom
Title: PROCESS FOR THE PREPARATION OF NOVOLAC ALKYLPHENOL RESINS
Abstract:
Process for the preparation of a novolac alkylphenol resin using a defined mixture of mono- and dialkylphenols, an aldehyde, and an acid catalyst. The mixture of mono- and dialkylphenols comprises 20 to 70 mol% mono- alkylphenols having an alkyl group of 1 to 18 carbon atoms, and 30 to 80 mol% of dialkylphenols having alkyl groups of 1 to 18 carbon atoms. The molar ratio of aldehyde in comparison to the mono- and dialkylphenol mixture is greater than or equal to 1. Novolac alkylphenol resins prepared according to this invention contain, of each individual starting material phenolic monomer component, less than 0.5 mass%, and in the best case, less than 0.1 mass% in comparison to the total obtained alkylphenol resin.