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公开(公告)号：EP0041128B1
公开(公告)日：1984-03-14
申请号：EP81103143.4
申请日：1981-04-27
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公开(公告)号：EP0064866A1
公开(公告)日：1982-11-17
申请号：EP82302315.5
申请日：1982-05-06
CPC分类号： C08G63/547
摘要： 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.
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公开(公告)号：EP0041128A2
公开(公告)日：1981-12-09
申请号：EP81103143.4
申请日：1981-04-27
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,togetherwith 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 for- maidehyde formed by the reaction. The cured product has a good mechanical strength and a high resistance to water and alkalis.
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公开(公告)号：EP0041128A3
公开(公告)日：1981-12-16
申请号：EP81103143
申请日：1981-04-27
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,togetherwith 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 for- maidehyde formed by the reaction. The cured product has a good mechanical strength and a high resistance to water and alkalis.
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