Über p‐Cymol und seine Derivate. XI. Umsetzungen von Thymol mit Ketonen

Strubell, W.

doi:10.1002/prac.19590090317

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1959

1985

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“…Crotonaldehyde, in combination with other aldehydes, has been condensed with alkylphenols (Bauer, 1942;Epshtein et al 1956;Tsukahara 1976;Jordan, 1967;Sebenik et al 1981;Starkov and Glushkova, 1969;Stather and Nebe, 1951;Strubell, 1959;Tallis, 1955;Winguist, 1966) and polyhydric phenols (Alles, 1951;Farbenfabriken Bayer AG, 1956;Froelich, 1962;Platt et al, 1953) by using both acid and base catalysts. The resins have found use as tanning agents and as tackifiers.…”

Section: Introductionmentioning

confidence: 97%

Phenol-crotonaldehyde resins. 1. Synthesis and characterization of acid-catalyzed resins

Dongre¹,

Ponrathnam²,

Nadkarni³

1985

Ind. Eng. Chem. Prod. Res. Dev.

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A new class of novolak type phenolic resins have been synthesized by acid-catalyzed condensation of phenol and crotonaldehyde. The thermoplastic powder resins have been characterized for their solubility, softening point, number-average molecular weight (MJ, and curing behavior. The resins were fractionated by thin-layer chromatography (TLC) and column chromatography. Infrared spectroscopic analysis indicates the inherent complexities in the structural features of the resins.

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Section: Introductionmentioning

confidence: 97%