Pressurization of ethylenically unsaturated monomers
    4.
    发明授权
    Pressurization of ethylenically unsaturated monomers 失效
    烯属不饱和单体的加压

    公开(公告)号:US06350827B1

    公开(公告)日:2002-02-26

    申请号:US09452451

    申请日:1999-12-02

    IPC分类号: C08F240

    摘要: Disclosed is a process for pressurizing ethylenically unsaturated monomers to 200-5000 bar in the absence of a polymerization initiator, which comprises effecting said pressurizing in the presence of nitroxyl compounds of the formula I where R1 and R2 are singly C1-C4-alkyl or combine with the joining carbon atom to form a 5- or 6-membered saturated hydrocarbon ring, R3 is C1-C4-alkyl, and R4 is hydrogen or C1-C12-alkyl. Also disclosed are a process for preparing copolymers by such pressurization and subsequent polymerization and copolymers obtainable thereby.

    摘要翻译: 公开了一种在不存在聚合引发剂的情况下将烯属不饱和单体加压至200-5000巴的方法,其包括在式I的硝酰基化合物存在下进行所述加压,其中R 1和R 2是单C1-C4烷基或与 连接碳原子以形成5-或6-元饱和烃环,R 3为C 1 -C 4 - 烷基,R 4为氢或C 1 -C 12 - 烷基。还公开了通过这种加压和随后的聚合和共聚物制备共聚物的方法 从而获得。

    Substance mixtures containing stabilizers and compounds containing vinyl groups
    6.
    发明授权
    Substance mixtures containing stabilizers and compounds containing vinyl groups 失效
    含有稳定剂的物质混合物和含有乙烯基的化合物

    公开(公告)号:US06200460B1

    公开(公告)日:2001-03-13

    申请号:US09147394

    申请日:1998-12-16

    IPC分类号: C07C720

    摘要: Substance mixtures comprising (A) vinyl-containing compounds, (B) an active amount of a mixture inhibiting the premature polymerization of the vinyl-containing compounds, comprising (i) at least one N-oxyl compound of a secondary amine which carries no hydrogen atoms on the &agr;-C atoms, and (ii) at least one iron compound, (C) if appropriate nitro compounds, and (D) if appropriate costabilizers, a process for inhibiting the premature polymerization of vinyl-containing compounds (A) and the use of mixture (B), if appropriate as a mixture with nitro compounds (C) and/or costabilizers (D), for inhibiting the premature polymerization of free radical polymerizable compounds and for stabilizing organic materials against the damaging action of free radicals.

    摘要翻译: 包含(A)含乙烯基化合物的物质混合物,(B)抑制含乙烯基化合物过早聚合的活性量的混合物,其包含(i)至少一种不携带氢的仲胺的N-氧基化合物 原子在α-C原子上,和(ii)至少一种铁化合物,(C)如果合适的硝基化合物,和(D)如果适当的稳定剂,一种抑制含乙烯基化合物(A)和 如果合适,使用混合物(B)作为与硝基化合物(C)和/或稳定剂(D)的混合物,用于抑制自由基可聚合化合物的过早聚合和稳定有机材料以抵抗自由基的破坏作用。

    Mixtures containing monomers and stabilizers
    7.
    发明授权
    Mixtures containing monomers and stabilizers 有权
    含有单体和稳定剂的混合物

    公开(公告)号:US6143205A

    公开(公告)日:2000-11-07

    申请号:US117178

    申请日:1998-08-03

    CPC分类号: C07B63/04 C07C7/20

    摘要: Mixtures contain(A) vinyl-containing monomers, and(B) an effective amount of a mixture inhibiting the premature polymerization of the vinyl-containing monomers during the purification or distillation and containing(i) from 0.05 to 4.5% by weight, based on the total mixture (B), of at least one N-oxyl compound of a secondary amine which carries no hydrogen atoms on the .alpha.-carbon atoms and(ii)from 99.95 to 95.5% by weight, based on the total mixture (B), of at least one nitro compound,and a mixture (B) is used for inhibiting the premature polymerization of monomers.

    摘要翻译: PCT No.PCT / EP97 / 02758 Sec。 371日期1998年8月3日 102(e)日期1998年8月3日PCT提交1997年5月28日PCT公布。 第WO97 / 46504号公报 日期1997年12月11日混合物含有(A)含乙烯基单体,和(B)有效量的混合物,其在纯化或蒸馏期间抑制含乙烯基单体的过早聚合,并含有(i)0.05至4.5% 基于总混合物(B),至少一种在α-碳原子上不含氢原子的仲胺的至少一种N-氧基化合物,和(ii)基于所述α-烯烃的99.95至95.5重量% 使用至少一种硝基化合物的总混合物(B)和(B)混合物来抑制单体的过早聚合。