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公开(公告)号：US4371675A
公开(公告)日：1983-02-01
申请号：US256136
申请日：1981-04-21
摘要： A modified aromatic hydrocarbon resin is prepared by reacting an aromatic hydrocarbon-formaldehyde resin with an unsaturated polybasic acid or an anhydride thereof, if desired, together with a saturated polybasic acid or an anhydride thereof, while making water or water and an aliphatic alcohol present in the reaction system and removing the formaldehyde formed by the reaction. The cured product has a good mechanical strength and a high resistance to water and alkalis.
摘要翻译： 如果需要，通过使芳族烃 - 甲醛树脂与不饱和多元酸或其酸酐与饱和多元酸或其酸酐反应制备改性芳族烃树脂，同时使水或水和脂族醇存在于 反应体系和去除由反应形成的甲醛。 固化产物具有良好的机械强度和高耐水碱性。
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2.发明授权Highly reactive aromatic hydrocarbon-formaldehyde resin and process for preparing the same 失效高反应性芳烃 - 甲醛树脂及其制备方法
公开(公告)号：US4689392A
公开(公告)日：1987-08-25
申请号：US844437
申请日：1986-03-26
摘要： A highly reactive aromatic hydrocarbon-formaldehyde resin having a diarlymethane content of not more than 5% by weight, essentially containing reactive groups of any one of CH.sub.2 OH, CH.sub.2 OCH.sub.3 and CH.sub.2 OCH.sub.2 OCH.sub.3 at both molecular terminals and having a xylenol value of at least 15 mol/kg as an index of reactivity with a compound having active hydrogen atoms is prepared by reacting an aromatic hydrocarbon such as xylene, mesitylene or naphthalene with formaldehyde at a molar ratio of the formaldehyde to the aromatic hydrocarbon of 2.0 to 5.0, a sulfuric acid concentration of 15 to 35% by weight in an aqueous layer and a reaction temperature of 80.degree. to 110.degree. C. while controlling a formaldehyde conversion within a range of 50 to 70% by mole over the range 4 to 8 hours. By reaction of the aromatic hydrocarbon-formaldehyde resin with the compound having reactive hydrogen atoms such as phenols and carboxylic acids, a modified aromatic hydrocarbon resin capable of giving a cured resin having a high mechanical strength and a high heat resistance can be obtained.
摘要翻译： 二甲苯含量为5重量％以下的高反应性芳烃 - 甲醛树脂，基本上含有两个分子末端的CH 2 OH，CH 2 OCH 3和CH 2 OCH 2 CH 3中的任何一种的反应性基团，二甲苯酚值至少为15mol / kg 作为与具有活性氢原子的化合物的反应性的指标，是通过使二甲苯，均三甲苯，萘等芳香族烃与甲醛与芳香族烃的摩尔比为2.0〜5.0，硫酸浓度15 至35重量％，反应温度为80℃至110℃，同时在4-80小时的范围内控制甲醛转化率为50至70摩尔％。 通过芳族烃 - 甲醛树脂与具有反应性氢原子的化合物如酚和羧酸的反应，可以获得能够得到具有高机械强度和高耐热性的固化树脂的改性芳族烃树脂。
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公开(公告)号：US4410690A
公开(公告)日：1983-10-18
申请号：US373693
申请日：1982-04-30
IPC分类号： C08G10/00 , C08G10/04 , C08G63/547 , C08G2/28
CPC分类号： C08G63/547
摘要： A process for the preparation of a modified aromatic hydrocarbon resin which comprises reacting an aromatic hydrocarbon-formaldehyde resin with an unsaturated polybasic acid or an anhydride thereof, together with a saturated polybasic acid or an anhydride thereof if necessary, in the presence or absence of water, while introducing steam into the reaction system to remove by-produced formaldehyde out of the reaction system, and reacting the formed reaction product with at least one dihydroxy compound selected from the group consisting of (A) a glycol and (B) a hydroxy-terminated oligomer obtained by reacting a glycol with an unsaturated polybasic acid or an anhydride thereof; the cured product of the modified aromatic hydrocarbon resin being excellent in mechanical strength and resistance to water and alkalis.
摘要翻译： 一种制备改性芳族烃树脂的方法，其包括在有或没有水的情况下使芳族烃 - 甲醛树脂与不饱和多元酸或其酸酐以及必要时的饱和多元酸或其酸酐反应 同时将蒸汽引入反应体系以除去反应体系中的副产甲醛，并使形成的反应产物与至少一种选自（A）二醇和（B）羟基 - 通过使二醇与不饱和多元酸或其酸酐反应得到的封端低聚物; 改性芳族烃树脂的固化产物具有优异的机械强度和耐水和耐碱性。
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