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    • 1. 发明授权
    • Process for producing hydroquinone
    • 生产氢醌的方法
    • US4258219A
    • 1981-03-24
    • US86666
    • 1979-10-19
    • Nobukatsu KatoTsutomu TakaseYoshio Morimoto
    • Nobukatsu KatoTsutomu TakaseYoshio Morimoto
    • C07C37/08C07C37/50C07C37/01
    • C07C37/50C07C37/08
    • An improved process for producing hydroquinone from p-isopropenyl phenol is disclosed. Hydroquinone is obtained by oxidizing p-isopropenyl phenol with hydrogen peroxide or an organic peroxide as an oxidizing agent at a temperature of 28.degree. to 50.degree. C. in the presence of a strong acid catalyst using a slightly or hardly water-soluble high-boiling polar solvent. In the oxidation reaction, the mole ratio of the oxidizing agent to p-isopropenyl phenol is kept at less than 1. After the reaction, in order to effectively decompose or consume the undecomposed p-isopropenyl phenol hydroperoxide and the unreacted oxidizing agent remaining in the reaction mixture, the reaction mixture is aged. Alternatively, or subsequently to the aging reaction, SO.sub.2 is added to the reaction mixture to completely decompose the undecomposed or unreacted peroxide. Thus, hydroquinone of high purity is obtained.
    • 公开了一种从对异丙烯基苯酚生产氢醌的改进方法。 通过在强酸催化剂存在下,在28〜50℃的温度下,用过氧化氢或有机过氧化物氧化对异丙烯基苯酚,得到氢醌,使用轻微或几乎难溶于水的高沸点 极性溶剂。 在氧化反应中,氧化剂与对异丙烯基苯酚的摩尔比保持在小于1℃。反应后,为了有效地分解或消耗未分解的对异丙烯基苯酚氢过氧化物和残留在 反应混合物,使反应混合物老化。 或者,或随后的老化反应,将SO 2加入到反应混合物中以完全分解未分解或未反应的过氧化物。 因此,得到高纯度的氢醌。
    • 2. 发明授权
    • Process for producing modified phenolic resin
    • 改性酚醛树脂生产工艺
    • US4158650A
    • 1979-06-19
    • US927780
    • 1978-07-25
    • Nobukatsu KatoTsutomu TakaseYoshio MorimotoTakashi KataokaMinoru Hattori
    • Nobukatsu KatoTsutomu TakaseYoshio MorimotoTakashi KataokaMinoru Hattori
    • C08G8/24C08G8/32C08G8/34
    • C08G8/32C08G8/24
    • A drying oil such as isomerized linseed oil, dehydrated castor oil or the like oil which has an iodine value of more than 140 and a content of conjugated double bonds of less than 50% is reacted with isopropenylphenol and/or oligomers thereof in an amount, by weight, of 0.1-2 times as great as that of the drying oil in the presence of a small amount of an acid at a temperature of 65-150.degree. C. for 0.5-3 hours. By the reaction, isopropenylphenol and/or its oligomers are introduced to the drying oil while leaving the double bonds of the oil as they are without disappearance. The thus introduced oil is further reacted with a phenol or phenols under strongly acidic conditions to introduce the phenols thereto. The drying oil which has been introduced with the isopropenylphenol and/or its oligomers and also with the phenols is mixed with a phenol or phenols and then reacted with formaldehyde to give a modified phenolic resin. This phenolic resin is useful for making a phenolic laminate with improved flexibility, punching quality and water proof.
    • {PG,1]将碘值大于140,共轭双键含量小于50%的异构化亚麻籽油,脱水蓖麻油等干燥油与异丙烯基苯酚和/或其低聚物反应 在温度为65℃的情况下,在少量酸存在下,干燥油的浓度为0.1(重量的0.1±14倍),对于0.5 {14 3 小时。 通过反应,将异丙烯基苯酚和/或其低聚物引入干燥油中,同时留下油的双键而不消失。 如此引入的油在强酸性条件下进一步与苯酚或酚反应以将酚引入其中。 与异丙烯基苯酚和/或其低聚物以及酚类引入的干燥油与酚或酚混合,然后与甲醛反应,得到改性酚醛树脂。 该酚醛树脂可用于制备具有改进的柔性,冲压质量和防水性的酚醛层压材料。