化学通报（网络版）
化學通報（網絡版）
화학통보（망락판）
Chemistry Online
2000年
1期
,共1页
阎卫东%洪瀚%周鼐%宓霞%胡友良**
閻衛東%洪瀚%週鼐%宓霞%鬍友良**
염위동%홍한%주내%복하%호우량**
b-二酮钛配合物%乙烯-苯乙烯共聚%MgCl2载体化%非茂催化剂%茂金属
b-二酮鈦配閤物%乙烯-苯乙烯共聚%MgCl2載體化%非茂催化劑%茂金屬
b-이동태배합물%을희-분을희공취%MgCl2재체화%비무최화제%무금속
b-diketonate titanium complex%Copolymerization of ethylene and styrene%MgCl2-supporting%Non-metallocene%Metallocene
乙烯与苯乙烯共聚合是以苯乙烯为“反应性基团”进行聚烯烃功能化的关键.用MgCl2负载的二(二苯甲酰甲烷)钛酸二苯氧基酯(MgCl2/(dbm)2Ti(OPh)2)催化了乙烯-苯乙烯共聚反应.该催化剂对乙烯-苯乙烯共聚的聚合活性达到3.2×105 g/(mol.h),与SiO2负载的茂金属(SiO2/MAO/rac-Et(Ind)2ZrCl2)的聚合活性在同一数量级.所得的ES共聚物中苯乙烯含量(Fs)提高到6.1%,高于SiO2/rac-Et(Ind)2ZrCl2催化所得的ES共聚物的相应值(Fs =3.5%).
乙烯與苯乙烯共聚閤是以苯乙烯為“反應性基糰”進行聚烯烴功能化的關鍵.用MgCl2負載的二(二苯甲酰甲烷)鈦痠二苯氧基酯(MgCl2/(dbm)2Ti(OPh)2)催化瞭乙烯-苯乙烯共聚反應.該催化劑對乙烯-苯乙烯共聚的聚閤活性達到3.2×105 g/(mol.h),與SiO2負載的茂金屬(SiO2/MAO/rac-Et(Ind)2ZrCl2)的聚閤活性在同一數量級.所得的ES共聚物中苯乙烯含量(Fs)提高到6.1%,高于SiO2/rac-Et(Ind)2ZrCl2催化所得的ES共聚物的相應值(Fs =3.5%).
을희여분을희공취합시이분을희위“반응성기단”진행취희경공능화적관건.용MgCl2부재적이(이분갑선갑완)태산이분양기지(MgCl2/(dbm)2Ti(OPh)2)최화료을희-분을희공취반응.해최화제대을희-분을희공취적취합활성체도3.2×105 g/(mol.h),여SiO2부재적무금속(SiO2/MAO/rac-Et(Ind)2ZrCl2)적취합활성재동일수량급.소득적ES공취물중분을희함량(Fs)제고도6.1%,고우SiO2/rac-Et(Ind)2ZrCl2최화소득적ES공취물적상응치(Fs =3.5%).
The copolymerization of ethylene and styrene is the key to the functionalization of polyolefin via styrene as"reactive group". Ethylene and styrene were coplymerized by MgCl2 supporting a kind of b-diketonate titanium complex, i.e. diphenoxyl titanium (IV) bisdibenzlmethanate, (dbm)2Ti(OPh)2, activated with aluminoxane(MAO). The polymerization activity was 3.2×105 g/(mol.h), similar to the SiO2 supporting metallocene (SiO2/MAO/Et(Ind)2ZrCl2). The styrene content in the ES copolymer (FS) was 6.1%, more than that by SiO2/MAO/Et(Ind)2ZrCl2 (Fs=3.5%). 13C NMR spectrum revealed that a random copolymer was obtained by MgCl2/(dbm)2Ti(OPh)2.
