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    Removing heat of reaction in copolymerization of ethylene in aqueous dispersion
    2.
    发明授权
    Removing heat of reaction in copolymerization of ethylene in aqueous dispersion 失效
    去除水分散体中乙烯共聚反应的热量

    公开(公告)号：US3891603A

    公开(公告)日：1975-06-24

    申请号：US42909073

    申请日：1973-12-28

    Applicant: BASF AG

    Inventor： HEIL EDUARD ,  KUCHNER KARL ,  SLIWKA WOLFGANG ,  SMITS HARALD

    IPC: B01J19/00 ,  C08F10/00 ,  C08F1/11 ,  C08F1/98

    CPC classification number: B01J19/0013 ,  B01J2219/00103 ,  B01J2219/00108 ,  C08F10/00 ,  C08F4/28

    Abstract: Copolymers of ethylene with 10 to 98 percent by weight of conventional comonomers are made by copolymerization in aqueous dispersion, at least a part of the heat of polymerization being removed by evaporation of the ethylene. The vapors are cooled by a cooling medium by heat exchange, in a cooling zone situated above the polymerization vessel and communicating with the latter, the hot vapors being fed to the upper end of the cooling zone, the cooled vapors returning to the polymerization vessel, so that the vapors are cooled by the cooling medium while they are flowing downward.

    Abstract translation: 通过在水分散体中共聚制备乙烯与10至98重量％的常规共聚单体的共聚物，通过乙烯蒸发除去至少一部分聚合热。 蒸汽通过热交换由冷却介质冷却，在位于聚合容器上方的冷却区中并与其连通，热蒸汽被供给到冷却区的上端，冷却的蒸气返回聚合容器， 使得蒸汽在冷却介质向下流动时被冷却。

    Microcapsules having walls made of copolymer of methylmethacrylate and acetylacetates of mono(meth) acrylates of aliphatic diols
    3.
    发明授权
    Microcapsules having walls made of copolymer of methylmethacrylate and acetylacetates of mono(meth) acrylates of aliphatic diols 失效
    微胶囊具有由甲基丙烯酸甲酯和脂肪族二醇的单（甲基）丙烯酸酯的乙酰乙酸酯的共聚物制成的壁

    公开(公告)号：US3872023A

    公开(公告)日：1975-03-18

    申请号：US24492972

    申请日：1972-04-17

    Applicant: BASF AG

    Inventor： BAUM GUENTER ,  BACHMANN RUDOLF ,  SLIWKA WOLFGANG

    IPC: B01J13/12 ,  B01J13/02

    CPC classification number: B01J13/125 ,  Y10T428/2987

    Abstract: The invention relates to microcapsules having a wall material composed of optionally crosslinked copolymers comprising olefinically unsaturated monomers containing hydrophilic groups such as an acetylacetate of a mono(meth) acrylate of an aliphatic diol, and olefinically unsaturated monomers containing hydrophobic groups, such as methyl methacrylate, and a process for the manufacture of microcapsules.

    Abstract translation: 本发明涉及具有由任选交联的共聚物组成的壁材料的微胶囊，所述共聚物包含含有亲水基团的烯属不饱和单体，例如脂族二醇的单（甲基）丙烯酸酯的乙酰乙酸酯和含有疏水基团的烯属不饱和单体如甲基丙烯酸甲酯， 以及制造微胶囊的方法。

    8.
    发明专利
    未知

    公开(公告)号：FI66764C

    公开(公告)日：1984-12-10

    申请号：FI803190

    申请日：1980-10-08

    Applicant: BASF AG

    Inventor： SLIWKA WOLFGANG

    IPC: B01J13/02 ,  B01J13/18 ,  B41M5/165 ,  B41M5/00

    Abstract: In a process for the preparation of microcapsules based on a melamine-formaldehyde resin, in which the microcapsules are obtained by condensing a melamine-formaldehyde precondensate, its C1-C4-alkyl ethers, or mixtures thereof, in water in which the material forming the capsule core is dispersed, at a pH of from 3 to 6.5 and at from 20 DEG to 100 DEG C., the improvement that the water contains a homopolymer or copolymer which possesses sulfonic acid groups but is devoid of phenyl or sulfophenyl groups and has a K value of from 100 to 170 or a viscosity of from 200 to 5,000 mPa.s (shearing gradient 489 s-1; 20% strength solution at 25 DEG C.), and that the melamine-formaldehyde precondensate is added continuously, or in portions, in step with the rate of condensation. The process gives individual capsules which are highly impermeable. The capsules are exceptionally useful for the production of pressure-sensitive recording materials.

    PROCESS FOR PREPARATION OF MICROCAPSULES BY CONDENSING MELAMINE-FORMALDEHYDE PRECONDENSATE IN PRESENCE OF POLYMER POSSESSING SULFONIC ACID GROUPS
    9.
    发明专利
    PROCESS FOR PREPARATION OF MICROCAPSULES BY CONDENSING MELAMINE-FORMALDEHYDE PRECONDENSATE IN PRESENCE OF POLYMER POSSESSING SULFONIC ACID GROUPS 未知

    公开(公告)号：CA1149239A

    公开(公告)日：1983-07-05

    申请号：CA361716

    申请日：1980-10-07

    Applicant: BASF AG

    Inventor： SLIWKA WOLFGANG

    IPC: B01J13/02 ,  B01J13/18 ,  B41M5/165 ,  C08K9/10

    Abstract: O.Z. 0050/034077 In a process for the preparation of microcapsules based on a melamine-formaldehyde resin, in which the microcapsules are obtained by condensing a melamine-formaldehyde precondensate, its C1-C4-alkyl ethers, or mixtures thereof, in water in which the material forming the capsule core is dispersed, at a pH of from 3 to 6.5 and at from 20 to 100.degree.C, the improvement that the water contains a homopolymer or copolymer which possesses sulfonic acid groups but is devoid of phenyl or sulfophenyl groups and has a K value of from 100 to 170 or a viscosity of from 200 to 5,000 mPa.s (shearing gradient 489 s-1; 20% strength solution at 25.degree.C), and that the melamine-formaldehyde precondensate is added continuously, or in portions, in step with the rate of condensation. The process gives individual capsules which are highly impermeable. The capsules are exceptionally useful for the production of pressure-sensitive recording materials.

    MICROCAPSULE DISPERSIONS
    10.
    发明专利
    MICROCAPSULE DISPERSIONS 未知

    公开(公告)号：CA1017479A

    公开(公告)日：1977-09-13

    申请号：CA168137

    申请日：1973-04-04

    Applicant: BASF AG

    Inventor： SLIWKA WOLFGANG ,  BACHMANN RUDOLF ,  BAUM GUNTER ,  LUDSTECK DIETER

    IPC: C09J7/02 ,  B01J13/02 ,  B01J13/20 ,  B41M5/165 ,  C09K23/52 ,  C11B9/00

    Abstract: 1418151 Colloidal dispersions BADISCHE ANILIN- & SODA-FABRIK AG 12 April 1973 [13 April 1972] 17556/73 Heading B1V Stable aqueous dispersions of microcapsules contain dissolved in the aqueous phase 0.01 to 3% by weight based on the weight of the dispersion of a partly cross-linked polymer containing carboxyl groups which are at least partly neutralised. The partially cross-linked polymer may be an alpha-beta unsaturated homopolymer or copolymer of a mono- or dicarboxylic acid cross-linked by irradiation or by incorporation of 0.01 to 5% by weight of a polyfunctional monomer, and may contain from 0 to 90% by weight of other copolymerizable olefinically unsaturated compounds. The polymer is preferably added in unneutralized form and neutralized in the dispersion. The dispersion may contain from 19 to 50% by weight of microcapsules of particle sizes from 2 to 5 microns. The microcapsules may comprise encapsulated reactive dye in organic liquid.

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