Method of recovering fluorinated acid surfactants from adsorbent particles loaded therewith
    11.
    发明申请
    Method of recovering fluorinated acid surfactants from adsorbent particles loaded therewith 有权
    从装载有吸附剂的颗粒中回收氟化表面活性剂的方法

    公开(公告)号:US20050177000A1

    公开(公告)日:2005-08-11

    申请号:US11036432

    申请日:2005-01-14

    IPC分类号: C07C51/493 C07C53/21

    CPC分类号: C07C51/493 C07C53/21

    摘要: The present invention provides a method of recovering a fluorinated acid surfactant or salt thereof from adsorbent particles to which said fluorinated acid surfactant has been adsorbed. The method comprises mixing adsorbent particles having adsorbed fluorinated acid surfactant or salt thereof with an alcohol and optionally an acid. The mixture is generally heated to cause esterification of the fluorinated acid surfactant or salt thereof with the alcohol so as to form an ester derivative of the fluorinated acid surfactant, distilling the mixture to form a distillate comprising the ester derivative, separating the ester derivative from the distillate and optionally feeding the remainder of the distillate back into the mixture.

    摘要翻译: 本发明提供一种从吸附了氟化酸表面活性剂的吸附剂颗粒中回收氟化酸表面活性剂或其盐的方法。 该方法包括将具有吸附的氟化酸表面活性剂或其盐的吸附剂颗粒与醇和任选的酸混合。 通常加热混合物以使氟化酸表面活性剂或其盐与醇进行酯化,以形成氟化酸表面活性剂的酯衍生物,蒸馏该混合物以形成包含酯衍生物的馏出物,将酯衍生物与 馏出物和任选地将剩余的馏出物反馈回混合物中。

    Crosslinkable, fluorine-containing copolymers as binders for highly
weather-resistant surface coatings
    13.
    发明授权
    Crosslinkable, fluorine-containing copolymers as binders for highly weather-resistant surface coatings 失效
    可交联的含氟共聚物作为高耐候性表面涂料的粘合剂

    公开(公告)号:US4859755A

    公开(公告)日:1989-08-22

    申请号:US141569

    申请日:1988-01-06

    CPC分类号: C08F218/10 C08F214/267

    摘要: Crosslinkable, fluorine-containing copolymers, comprising:(a) 15 to 70 mol % of copolymerized units of a vinyl ester of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 are branched or straight-chain alkyl radicals or cycloalkyl radicals, at most one of these radicals is hydrogen and at least one of these radicals is a methyl group, and where, furthermore, the entire acyl radical of the vinyl ester contains at least 9 and at most 28 carbon atoms,(b) 5 to 50 mol % of copolymerized units of a hydroxyalkyl vinyl ether of the formulaCH.sub.2 .dbd.CH--O--R.sup.4 --OH in which R.sup.4 OH is a branched or straight-chain hydroxy-alkyl group having 1 to 6 carbon atoms, and(c) copolymerized units of tertrafluoroethylene in an amount which makes up the sum of components (a) plus (b) plus (c) to 100, but with the proviso that at least 10 mol % of copolymerized units of tetrafluoroethylene are present in the copolymer.From these, highly weather-resistant surface-coating compositions are obtained on addition of crosslinking agents, solvents and conventional additives.

    摘要翻译: 可交联的含氟共聚物,其包含:(a)15至70摩尔%的式“IMAGE”的乙烯基酯的共聚单元,其中R 1,R 2和R 3为支链或直链烷基或环烷基, 这些基团中的大多数是氢,并且这些基团中的至少一个是甲基,此外,乙烯基酯的整个酰基包含至少9个和至多28个碳原子,(b)5-50mol %CH 2 = CH-O-R 4 -OH的羟烷基乙烯基醚共聚单元的%,其中R 4 OH是具有1至6个碳原子的支链或直链羟基烷基,和(c)叔氟乙烯的共聚单元 组分(a)加(b)加(c)至100的总和的量,但条件是在共聚物中存在至少10摩尔%的共聚单元的四氟乙烯。 从这些中,通过添加交联剂,溶剂和常规添加剂获得高耐候性表面涂层组合物。

    Protective colloid-free plastics dispersion having a bimodal particle
size distribution
    15.
    发明授权
    Protective colloid-free plastics dispersion having a bimodal particle size distribution 失效
    具有双峰粒度分布的无胶态塑料分散体

    公开(公告)号:US4395500A

    公开(公告)日:1983-07-26

    申请号:US306875

    申请日:1981-09-29

    CPC分类号: C09D5/02 C08J3/03 C09D5/34

    摘要: A protective colloid-free plastics dispersion yielding after drying a polymer film which under the influence of moisture has no or little tendency to whitening contains polymer particles having a bimodal size distribution, that is, on the one hand relatively coarse particles and on the other hand relatively fine particles. The polymer component consists of at least 10 weight % of particles having an average diameter of less than 0.2 .mu.m and of 90 weight % at most of particles having an average diameter of more than 0.25 .mu.m, and the ratio of average grain size of coarse to fine polymer is at least 2:1. The plastics dispersion is suitable especially as binder dispersion in plasters and gloss paints.

    摘要翻译: 在干燥聚合物膜之后产生的无保护胶体的塑料分散体在水分的影响下没有或几乎没有或很少的白化趋势包含具有双峰尺寸分布的聚合物颗粒,即一方面是相对粗的颗粒,另一方面 比较细的颗粒。 聚合物组分由至少10重量%的平均直径小于0.2μm的颗粒和至多90重量%的平均直径大于0.25μm的颗粒组成,并且平均颗粒尺寸的比例 粗至细聚合物至少为2:1。 塑料分散体特别适用于石膏和光泽油漆中的粘合剂分散体。