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    • 45. 发明申请
    • METHOD FOR PRODUCING METHYL-METHACRYLATE POLYMERS IN A RECYCLE REACTOR
    • 用于生产甲基聚合物在一个周期核
    • WO1998012229A1
    • 1998-03-26
    • PCT/EP1997005125
    • 1997-09-18
    • BASF AKTIENGESELLSCHAFTHUNGENBERG, Klaus-DieterBAUMGÄRTEL, MichaelKOCH, JürgenFISCHER, WolfgangTHIELE, Reiner
    • BASF AKTIENGESELLSCHAFT
    • C08F02/02
    • B01J19/245B01J19/2435B01J2219/00094B01J2219/00164C08F2/02C08F20/14
    • The invention concerns methyl-methacrylate polymers with an heterogeneity of 1.0 to 1.2. Said polymers are obtained continuously by polymerization of monomers consisting of no less than 90 % by weight methyl-methacrylate in a recycle reactor, which has preferably at least a tubular reactor or a multitube-flow reactor, avoiding unwarranted wall deposits. Said polymers are produced in such a way that temperature during polymerization stands at 135-150 DEG C, the recycle relation is bigger than 20 when divided by the number of chargings per circulation loop, the mean effective axial circulation is faster than 5 cm/s, a polymerization initiator having a batch half change value of 3 to 10 min. is used, and the inflow concentration of the initiator is set in such a way that by a mean residence time of 1.3 to 2.5 hours a polymer rupture of 0.50 to 0.70 at the output of the reactor is achieved. Preforms having very good optical properties can be produced with the homogeneous polymers.
    • 具有1.0至1.2的多分散性的甲基丙烯酸甲酯的聚合物连续地是通过聚合在本体中的至少90重量甲基丙烯酸甲酯单体中存在的环管反应器,其优选地包括至少一个管或管束反应器中,%,而不会干扰壁沉积所以 产生,即,聚合温度为135-150℃,在循环比小于20通过每个循环环路中,平均有效轴向流动速度大于5厘米/秒的注射次数除以大。 是具有3至10分钟的半间歇时间聚合引发剂。用于与引发剂的进料浓度进行调整,使得,对于在反应器出口,聚合物级分0.50〜0.70的1.3至2.5小时的平均停留时间 实现。 将得到的均匀的聚合物,具有优异的光学特性成形均可生产。
    • 48. 发明申请
    • PROCESS FOR PRODUCING n-BUTYLALKYL ETHERS
    • 工艺生产N- BUTYLALKYLETHERN
    • WO1998012164A2
    • 1998-03-26
    • PCT/EP1997004703
    • 1997-08-29
    • BASF AKTIENGESELLSCHAFTKANAND, JürgenRÖPER, Michael
    • BASF AKTIENGESELLSCHAFT
    • C07C41/00
    • C07C41/06C07C41/20C07C41/32C07C41/54C07C43/15C07C43/04C07C43/303
    • In a process for producing n-butylalkyl ethers, (a) 1,3-butadiene or a butadiene-containing hydrocarbon mixture is reacted with an alcohol of formula ROH (I), in which the radical R is a C2-C20 alkyl or alkenyl group substituted or not with 1 to 2 C1-C10 alkoxy or hydroxy groups, a C6-C10 aryl or C7-C11 aralkyl group or a methyl group, at an increased temperature and pressure in the presence of a Brönsted acid or in the presence of a complex of an element of groups Ib, VIIb or VIIIb of the periodic table of elements with a phosphorus- or nitrogen-containing ligand, yielding a mixture of addition products of formulas (II) and (III); (b) the isomers are separated; (c) addition product III is isomerised into addition product II; (d) addition product II is hydrogenated in the presence of a homogeneous or heterogeneous transition metal element catalyst in the liquid phase or in the presence of a heterogeneous, transition metal element-containing catalyst in the gas phase, yielding n-butylalkyl ether of formula (IV).
    • 通过一种用于制备过程正Butylalkylethern:1)1,3-丁二烯或烃混合物与下式的醇含丁二烯的:ROH,其中R是未取代的或被1至2的C1〜C10烷氧基 或羟基取代的C2至C20烷基或链烯基,C6至C10芳基或C7-C11芳烷基团或甲基基团,在升高的温度和在布朗斯台德酸的或在存在升高的压力 从Ib族,VIIB或用含磷或含氮配体的元素的周期表VIIIb的元素的复合物的存在下反应得到下式的加合物(II)和混合物(III); b)分离的异构体; c)该加合物III异构化为加合物II和d)氢化所述加合物II在均相或非均相过渡金属元素催化剂的在液相中或在非均相,含过渡金属元素的催化剂的在气相存在下式的n Butylalkylether存在(IV) ,