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    Process for the preparation of alphaolefin polymers
    41.
    发明公开
    Process for the preparation of alphaolefin polymers 失效
    制备ALPHAOFFIN聚合物的方法

    公开(公告)号：EP0361371A3

    公开(公告)日：1990-06-20

    申请号：EP89117696.8

    申请日：1989-09-25

    申请人： UNION CARBIDE CHEMICALS AND PLASTICS COMPANY INC. (a New York corporation)

    发明人： Mialki, William Stanley ,  Noshay, Allen

    IPC分类号： C08F10/06 ,  C08F2/34 ,  C08F4/646

    CPC分类号： C08F10/06 ,  C08F4/6465

    摘要： A process for homopolymerization or copolymerization comprising contacting propylene or a mixture of alpha-olefins having 2 to 8 carbon atoms containing a major proportion of propylene in the gas phase in at least one reaction zone, under polymerization conditions, with a catalyst system comprising (i) a solid catalyst precursor, which includes magnesium, titanium, a halogen which is chlorine, bromine, or iodine, and a polycarboxylic acid ester containing two ester groups attached to two adjacent carbon atoms wherein the two adjacent carbon atoms and the two carbonyl carbon atoms are coplanar; (ii) a hydrocarbylaluminum cocatalyst; and (iii) a silicon compound having the following formula:
    R a Si(OR′) b
    wherein
    R = a branched chain alkyl having 3 to 20 carbon atoms
    R′ = a hydrocarbyl group having 1 to 20 carbon atoms
    each R and R′ is alike or different
    a = an integer from 1 to 3
    b = an integer from 1 to 3
    a + b = 4
    with the proviso that the atomic ratio of aluminum to silicon is in the range of about 0.5:1 to about 100:1 and the atomic ratio of aluminum to titanium is in the range of about 5:1 to about 300:1.

    Process for the in situ blending of polymers
    42.
    发明公开
    Process for the in situ blending of polymers 失效
    原位混合物。

    公开(公告)号：EP0369436A2

    公开(公告)日：1990-05-23

    申请号：EP89121160.9

    申请日：1989-11-15

    申请人： UNION CARBIDE CHEMICALS AND PLASTICS COMPANY INC. (a New York corporation)

    发明人： Lee, Kiu Hee ,  Samuels, Sari Beth ,  Karol, Frederick John,

    IPC分类号： C08L23/04 ,  C08F297/08

    CPC分类号： C08F297/08 ,  C08F210/16 ,  C08F2/001

    摘要： A process for the in situ blending of polymers comprising continuously contacting, under polymerization conditions, a mixture of ethylene and at least one alpha-olefin having at least 3 carbon atoms with a catalyst in at least two fluidized bed reactors connected in series, said catalyst comprising:

    (i) a complex consisting essentially of magnesium,titanium, a halogen, and an electron donor;
    (ii) at least one activator compound for the complex having the formula AlR˝ e X′ f H g wherein X′ is Cl or OR‴; R˝ and R‴ are saturated aliphatic hydrocarbon radicals having 1 to 14 carbon atoms and are alike or different; f is 0 to 1.5; g is 0 or 1; and e + f + g = 3; and
    (iii) a hydrocarbyl aluminum cocatalyst, the polymerization conditions being such that ethylene copolymer having a high melt index in the range of about 0.1 to about 1000 grams per 10 minutes is formed in at least one reactor and ethylene copolymer having a low melt index in the range of about 0.001 to about 1.0 gram per 10 minutes is formed in at least one other reactor, each copolymer having a density of about 0.860 to about 0.965 gram per cubic centimeter and a melt flow ratio in the range of about 20 to about 70, and being admixed with active catalyst, with the proviso that:

    (a) the misture of copolymer of ethylene and active catalyst formed in one reactor in the series is transferred to the immediately succeeding reactor in the series;
    (b) in the reactor in which the low melt index copolymer is made:
    (1) the alpha-olefin is present in a ratio of about 0.02 to about 3.5 mole of alpha-olefin per mole of ethylene; and
    (2) hydrogen is optionally present in a ratio of about 0.001 to about 0.5 mole of hydrogen per mole of combined ethylene and alpha-olefin;
    (c) in the reactor in which the high melt index copolymer is made:
    (1) the alpha-olefin is present in a ratio of about 0.02 to about 3.5 mole of alpha-olefin per mole of ethylene; and
    (2) hydrogen is present in a ratio of about 0.05 to about 3 moles of hydrogen per mole of combined ethylene and alpha-olefin; and
    (d) additional hydrocarbyl aluminum cocatalyst is introduced into each reactor in the series following the first reactor in an amount sufficient to restore the level of the activity of the catalyst transferred from the preceding reactor in the series to about the initial level of activity in the first reactor.

    摘要翻译： 一种用于原位共混聚合物的方法，包括在聚合条件下将至少一种具有至少3个碳原子的至少一种α-烯烃与至少两个串联连接的流化床反应器中的催化剂的混合物连续接触，所述催化剂 包括：（i）基本上由镁，钛，卤素和电子给体组成的络合物; （ii）具有式AlR sec eX min fHg的复合物的至少一种活化剂化合物，其中X min为Cl或OR“'; R sec和R“是具有1至14个碳原子的饱和脂族烃基，并且是相同或不同的; f为0〜1.5; g为0或1; 和e + f + g = 3; 和（iii）烃基铝助催化剂，聚合条件使得在至少一个反应器和具有低熔体指数的乙烯共聚物中形成具有约0.1至约1000克/ 10分钟范围内的高熔体指数的乙烯共聚物 在至少一个其它反应器中形成约0.001至约1.0克/ 10分钟的范围，每个共聚物的密度为约0.860至约0.965克/立方厘米，熔体流动比在约20至约 70，并与活性催化剂混合，条件是：（a）在该系列中的一个反应器中形成的乙烯和活性催化剂的共聚物的混合物被转移到串联的紧随其后的反应器中; （b）在其中制备低熔体指数共聚物的反应器中：（1）α-烯烃以每摩尔乙烯约0.02至约3.5摩尔α-烯烃的比例存在; 和（2）任选以每摩尔组合的乙烯和α-烯烃约0.001至约0.5摩尔氢的比率存在氢; （c）在其中制备高熔体指数共聚物的反应器中：（1）α-烯烃以每摩尔乙烯约0.02至约3.5摩尔α-烯烃的比例存在; 和（2）氢以每摩尔组合乙烯和α-烯烃约0.05至约3摩尔氢的比例存在; 并且（d）另外的烃基铝助催化剂被引入到第一反应器之后的序列中的每个反应器中，其量足以恢复从该系列中的前述反应器转移到约初始活性水平的催化剂的活性水平 第一反应堆。 F

    Anhydrous diluents for the isobutylene oxidation reaction to methacrolein and methacrolein oxidation to methacrylic acid
    43.
    发明公开
    Anhydrous diluents for the isobutylene oxidation reaction to methacrolein and methacrolein oxidation to methacrylic acid 失效
    无水稀释剂异丁烯氧化成甲基丙烯醛和甲基丙烯醛与甲基丙烯酸的氧化。

    公开(公告)号：EP0361372A1

    公开(公告)日：1990-04-04

    申请号：EP89117697.6

    申请日：1989-09-25

    申请人： UNION CARBIDE CHEMICALS AND PLASTICS COMPANY INC. (a New York corporation)

    发明人： Etzkorn, William George ,  Harkreader, Gordon Gene

    IPC分类号： C07C57/05 ,  C07C51/21

    CPC分类号： C07C45/35 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

    摘要： The processes for oxidation of isobutylene to methacrolein and the oxidation of isobutylene to methacrylic avoid in two stages with methacrolein as an intermediate are improved by use of anhydrous diluent gases to reduce or replace steam in the reaction streams. In particular, the use of anhydrous diluents which raise the composite flowing heat capacity of the diluent gas mixture to at least about 6.5 calories/gram-mole (°C) will improve selectivity to desired products and will reduce the water load on the system.

    摘要翻译： 对于异丁烯的氧化处理成甲基丙烯醛和异丁烯氧化成甲基丙烯酸避免在两个阶段与异丁烯醛作为中间体通过使用无水稀释气体的改进，以减少或反应流替换蒸汽。 特别地，提高稀释气体的混合物的复合流动热容至少大约6.5卡/克 - 摩尔（℃）将提高选择性对所需产物，并希望使用无水稀释剂，以减少系统上的水负荷。

    PROPOXYLATED ALKALI-SOLUBLE THICKENERS
    46.
    发明授权
    PROPOXYLATED ALKALI-SOLUBLE THICKENERS 失效
    丙氧基化碱溶性增稠剂。

    公开(公告)号：EP0452399B1

    公开(公告)日：1995-05-24

    申请号：EP90901994.5

    申请日：1989-12-13

    申请人： UNION CARBIDE CHEMICALS AND PLASTICS COMPANY INC. (a New York corporation)

    发明人： SHAY, Gregory, D. ,  KRAVITZ, Fran, K.

    IPC分类号： C08F220/34

    CPC分类号： C08F220/16 ,  C08F220/04 ,  C08L33/02 ,  C08L33/08 ,  C09D7/43

    摘要： There is disclosed an aqueous emulsion copolymer which provides an alkali-soluble anionic copolymer providing antisettling and antisag thickening characteristics especially useful in textured latex paints. The copolymers comprise an aqueous emulsion copolymer of: (A) about 10-60 weight percent of an alpha, beta-monoethylenically unsaturated carboxylic acid; (B) about 20-80 weight percent of a non-reactive monoethylenically unsaturated monomer which provides a water-insoluble copolymer; (C) about 0.5-40 weight percent of a monoethylenically unsaturated, hydrophobic nonionic monomer which is the reaction product of a monohydric or monoamine-terminated polypropoxylated or polybutoxylated hydrophobe with a monoethylenically unsaturated monomer having a single group which is reactive under the conditions employed; and (D) from 0 up to about 2 weight percent of a polyethylenically unsaturated monomer.