[1] Qi Zhengjian, Luo Zhenyang, Li Xiangxin, Sun Yueming Feng Weidong, et al. Study on ternary polymerization of toluene diisocyanate [J]. Journal of Southeast University (English Edition), 2006, 22 (2): 265-269. [doi:10.3969/j.issn.1003-7985.2006.02.025]
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Study on ternary polymerization of toluene diisocyanate(
)
甲苯二异氰酸酯三元聚合反应的研究
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 22
- Issue:
- 2006 2
- Page:
- 265-269
- Research Field:
- Chemistry and Chemical Engineering
- Publishing date:
- 2006-06-30
Info
- Title:
- Study on ternary polymerization of toluene diisocyanate
- 甲苯二异氰酸酯三元聚合反应的研究
- Author(s):
- Qi Zhengjian1; Luo Zhenyang2; Li Xiangxin3; Sun Yueming1 Feng Weidong1; Wang Hualin1; Yan Dazhi1
-
1Department of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, China
2 College of Information Science and Technology, Nanjing Forestry University, Nanjing 210037, China
3Shandong Light Industry Engineering School, Qingdao 266112, China
- 祁争健1; 罗振扬2; 李祥新3; 孙岳明1; 冯卫东1; 王华林1; 颜大志1
- 1东南大学化学化工系, 南京 210096; 2南京林业大学信息科学技术学院, 南京210037; 3山东省轻工工程学校, 青岛 266112
- Keywords:
- 2; 4-diisocyanate toluene; terpolymer; gel permeation chromatography; curing agent; storage stability
- PACS:
- O63;TQ43;TQ31
- DOI:
- 10.3969/j.issn.1003-7985.2006.02.025
- Abstract:
- For the production of reactive polyurethane cross-linkinger and curing agents, 2, 4-diisocyanate toluene(TDI)terpolymer, which possesses the rigid structures of hexatomic ring and three reactive functional groups, was synthesized and characterized by the Fourier transform infrared(FTIR), the gel permeation chromatography(GPC)and the chemical analysis methods.The reaction conditions were studied and optimized.A tracking research on the polymerization process of TDI was taken by using the GPC.The formation processes of the terpolymer, oligomers and higher-polymers were also dealt with.Results show that the TDI terpolymer can be prepared in the presence of Cat-3 catalyst and at the reaction temperature of(60±2)℃.The reaction time is short, its outcomes have narrow molecular weights distribution, namely molecular weights from 530 to 550, Mw/Mn=1.10, and the mass fraction of NCO is(25.0±0.5)%.With the reaction time prolonging, however, TDI can be further higher-polymerized to form higher-polymers.Benzoyl chloride(0.4%, mass fraction), as the stabilizing agent, can effectively inhibit the occurrence of higher-polymerization.The obtained TDI terpolymer can be stable for more than half a year.
- 为了制备高活性聚氨酯交联固化剂, 用2, 4-二异氰酸基甲苯(TDI)三元聚合反应合成了具有3个活性异氰酸根的六元环结构异氰脲酸酯.用红外光谱、凝胶色谱(GPC)及化学分析法对反应条件进行了优化研究, 并对产物进行了表征.利用凝胶色谱法对TDI三聚体及多聚体的形成过程进行过程跟踪, 并对TDI三聚体的稳定性进行了研究.结果表明:采用Cat-3作催化剂, 在(60±2)℃下反应, 可制得分子量为530~550, Mw/Mn=1.10, NCO质量分数为(25.0 ±0.5)%窄分子量分布的TDI三聚体;随着反应时间延长, TDI会进一步多元聚合生成多聚结构;而加入质量分数为0.4%的苯甲酰氯作为稳定剂, 可有效抑制多元聚合的发生, 所制备的TDI三聚体稳定性可在半年以上.
References:
[1] Bock M, Pedain J, Uerdingen W.Process for the preparation of polyisocyanates containing isocyanurate groups and the use thereof [P].USA Patent, 4324879.1982.
[2] Ewald M, Windmueller M, Poersch W, et al.Catalysts for preparing polyisocyanates containing isocyanurate groups and their use[P].USA Patent, 6875243.2005.
[3] Slack W E, Kemp H T.Freeze-stable allophanate modified toluene diisocyanate terpolymers [P].USA Patent, 6028158.2000.
[4] Pavlova M, Draganova M.Heterocyclic oligomers based on toluene diisocyanate[J].Polymer Communications, 1991, 32(14):446-448.
[5] Li Haihong.Terpolymerization of 2, 4-tolylene diisocyanate[J].China Synthetic Resin and Plastics, 2004, 21(3):26-28.(in Chinese)
[6] Yu Weimin.Polyurethane elastomer notebook [M].Beijing:Chemical Industry Press, 2001.(in Chinese)
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Memo
- Memo:
- Biographies: Qi Zhengjian(1964—), female, associate professor, qizhengjian@sohu.com;Sun Yueming(1965—), male, doctor, professor, sun@seu.edu.cn.