METHOD FOR PREPARING PHOSPHORUS-CONTAINING POLYPHENYLENE OXIDE RESIN WITH LOW MOLECULAR WEIGHT
申请人:Shengyi Technology Co., Ltd
公开号:EP2799466A1
公开(公告)日:2014-11-05
Disclosed is a method for preparing a phosphorus-containing polyphenylene oxide resin with a low molecular weight, comprising the steps of: step 1: providing a phosphorus-containing phenolic compound and a raw polyphenylene oxide resin having a number-average molecular weight of more than 10000; step 2: dissolving the raw polyphenylene oxide resin into a solvent to make a solution of the raw polyphenylene oxide resin; step 3: adding the phosphorus-containing phenolic compound into the solution of the raw polyphenylene oxide resin; step 4: introducing an initiator, and carrying out a re-dispersing reaction at a reaction temperature of above 60°C under the effect of the initiator; and step 5: after the reaction is finished, the product obtained being phosphorus-containing polyphenylene oxide resin with a low molecular weight, the number-average molecular weight thereof being 1000 - 6000. By dispersing the phosphorus-containing phenolic compound into the solution of polyphenylene oxide resin, and carrying out the re-dispersing reaction in the presence of the initiator to prepare the phosphorus-containing polyphenylene oxide resin with a low molecular weight, the obtained phosphorus-containing polyphenylene oxide resin with a low molecular weight is convenient to process, and suitable for use as the matrix resin of composite materials for high-frequency circuit boards or as an additive component for other polymeric materials.
本发明公开了一种低分子量含磷聚苯醚树脂的制备方法,包括以下步骤: 步骤 1:提供含磷酚类化合物和数均分子量大于 10000 的聚苯醚树脂原料; 步骤 2:将聚苯醚树脂原料溶解到溶剂中,制成聚苯醚树脂原料溶液; 步骤 3:将含磷酚类化合物加入到聚苯醚树脂原料溶液中; 步骤 4:引入引发剂,在反应温度高于 60℃的条件下进行再分散反应; 步骤 5:将聚苯醚树脂原料溶液加入到含磷酚类化合物中; 步骤 6:将聚苯醚树脂原料溶液加入到含磷酚类化合物中; 步骤 7:将聚苯醚树脂原料溶液加入到含磷酚类化合物中:步骤 4:引入引发剂,在引发剂的作用下,在 60°C 以上的反应温度下进行再分散反应;以及 步骤 5:反应结束后,得到的产品为低分子量的含磷聚苯醚树脂,其平均分子量为 1000 - 6000。将含磷酚类化合物分散到聚苯醚树脂溶液中,在引发剂存在下进行再分散反应,制备出低分子量的含磷聚苯醚树脂,得到的低分子量的含磷聚苯醚树脂加工方便,适合用作高频电路板复合材料的基体树脂或其他高分子材料的添加组分。