Development research of the new ewstorative resin tith expandable monomers

1)合成了两种螺单体（CMA: 2-氧-5-甲基氧基甲基-1 - 1,3 -二恶烷，VBECC: 2-氧-5-乙基-5-（对乙烯基苯氧基）甲基-1 - 1,3 -二恶烷），并通过JR、NMR和元素分析对其进行了鉴定。2)以AIBN为引发剂，在苯溶液中聚合了三种不同的CMA和MMA共聚单体。合成了3种侧链上含有s - nechionine氧化剂的聚甲基丙烯酸甲酯，并对其在MMA溶液中的溶解度进行了研究。合成了3种侧链上含有s - nechionine氧化剂的聚甲基丙烯酸甲酯，分别为35/65（Mn=47000, Mw/Mn=3.14）、44/56（Mn=40400, Mw/Mn=1.99）和55/45（Mn= 47000, Mw/Mn=1.88）。结果表明，含氧化剂的聚甲基丙烯酸甲酯衍生物对甲基丙烯酸甲酯具有良好的溶解度，且不抑制甲基丙烯酸甲酯的聚合。4)a型甲基丙烯酸螺酯，CMA对甲基丙烯酸酯单体（二甲基丙烯酸乙二醇（1G）、二甲基丙烯酸三乙二醇（3G）和甲基丙烯酸正丁酯）具有良好的溶解度，并证实了这些单体的热聚合加速。验证了CMA中乙烯基的聚合和螺环基的开环聚合，其聚合物不溶于丙酮溶液。

1) Two spiromonomers (CMA : 2-oxo-5-metbacryloxymechy1-1, 3-dioxane, VBECC : 2-oxo-5-etbyl-5-(p-vinylbenzyloxy)methy1-1, 3-dioxane) were synthesized and identified by JR and NMR spectra, and elemental analysis.2) Three kinds of comonomers of CMA with MMA that differs were polymerized in the benzene solution with AIBN as initiator. The chemical ratio and characterization of the cornonomers which is obtained were as follows CMAIMMA=35/65(Mn=47000, Mw/Mn=3.14), 44/56(Mn=40400, Mw/Mn=1.99) and 55/45(Mn= 47000, Mw/Mn=1.88)Three kinds of polymethylmethacrylates that have S-rnechionine oxidant in the side chain were synthesized and examined its solubility into MMA solution. As results a polymethylmethacrylate derivative with Soxidant have an excellent solubility into MMA and does not inhibited the polymerization of MMA.4) A spirocarbonate methacrylate, CMA with excellent solubility into the methacrylate monomers(ethyleneglycol dimethacrylate(1G), triethyleneglycol dimethacrylate(3G) and n-butylmethacrylate), in addition, it was confirmed that the heat-polymerization of those monomers is accelerated. Also the polymerization of vinyl group and ring-opening polymerization of spirocyclic group in CMA were verified and its polymers were insoluble into acetone solution.