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公开(公告)号：EP3426502A1
公开(公告)日：2019-01-16
申请号：EP17712026.8
申请日：2017-03-09
摘要： 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.
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公开(公告)号：EP3426502B1
公开(公告)日：2019-12-11
申请号：EP17712026.8
申请日：2017-03-09
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