Multi-stage opacifying polymer particles containing non-polymeric acid
absorbed therein
    14.
    发明授权
    Multi-stage opacifying polymer particles containing non-polymeric acid absorbed therein 失效
    含有非聚合酸的多级不透明聚合物颗粒被吸收

    公开(公告)号:US4970241A

    公开(公告)日:1990-11-13

    申请号:US382612

    申请日:1989-07-19

    IPC分类号: C08F285/00 C08J9/28 C09D7/12

    摘要: Multi-stage polymer particles containing one or more void space(s) therein are produced by sequential emulsion polymerization of an essentially low-acid earlier polymer stage, encapsulation of said low-acid polymer stage with at least a final polymer stage, contacting said polymer particles with a non-polymeric carboxylic acid or anhydride to permit the acid or anhydride to be absorbed into said low-acid polymer stage and swelling the polymer particles by contacting the particles with an aqueous base. The low-acid polymer stage is formed by emulsion polymerizing a monomer system comprising ethylenically unsaturated monomer(s) and containing less than 5% by weight of monomer(s) containing acid functionality. The low-acid polymer stage is swubsequently encapsulated by one or more polymer stages by emulsion polymerizing ethylenically unsaturated monomer(s) in the presence of the low-acid polymer stage. The final stage has a glass transition temperature (Tg) of about 50.degree. C. or greater, and the total polymer stages having a Tg of about 50.degree. C. or greater comprise about 60% or more by weight of the polymer particles. A non-polymeric carboxylic acid or anhydride is absorbed into the polymer particles and the resultant particles are contacted with base at a pH sufficient to swell the particles with water at a temperature near or above the Tg of the neat polymer or plasticized polymer of the final polymer stage. When dried the particles contain void space(s) therein which produce(s) opacity in compositions in which the particles are contained.

    摘要翻译: 在其中含有一个或多个空隙空间的多级聚合物颗粒通过基本上低酸的较早聚合物阶段的顺序乳液聚合制备,所述低酸聚合物阶段至少包含最终聚合物阶段,使所述聚合物接触 具有非聚合羧酸或酸酐的颗粒,以允许酸或酸酐被吸收到所述低酸聚合物阶段中,并通过使颗粒与碱水溶液接触来使聚合物颗粒膨胀。 通过乳液聚合包含烯属不饱和单体并且含有少于5重量%的含有酸官能团的单体的单体体系形成低酸聚合物阶段。 低酸聚合物阶段通过在低酸聚合物阶段的存在下通过乳液聚合烯键式不饱和单体而被一个或多个聚合物阶段封装。 最终阶段具有约50℃或更高的玻璃化转变温度(Tg),并且具有约50℃或更高Tg的总聚合物阶段包含约60重量%或更多的聚合物颗粒。 非聚合的羧酸或酸酐被吸收到聚合物颗粒中,并且所得颗粒在足以在最终纯净聚合物或增塑聚合物的Tg附近或更高的温度下用水溶胀颗粒的pH与碱接触 聚合物阶段。 当干燥时,颗粒中含有空隙空间,其中含有颗粒的组合物中产生不透明度。

    Process and composition for insulation of surfaces, and product thereby
obtained
    15.
    发明授权
    Process and composition for insulation of surfaces, and product thereby obtained 失效
    由此得到表面绝缘的工艺和组成

    公开(公告)号:US4442242A

    公开(公告)日:1984-04-10

    申请号:US246446

    申请日:1981-03-23

    摘要: The invention relates to a process for insulating surfaces for the purpose of preventing or reducing occurrence of condensation on the surface, comprising applying to the surface a layer of a coating composition containing a binder and, distributed therein, granules of an expanded inorganic material having a bulk density of at least 150 kgs/m.sup.3. The invention also provides for a composition suitable for carrying out such process, comprising a binder and granules of an expanded inorganic material of the nature indicated.

    摘要翻译: 本发明涉及一种为了防止或减少在表面上发生冷凝的目的而使表面绝缘的方法,包括向表面施涂一层包含粘结剂的涂料组合物,并在其中分布有一种具有 堆积密度至少为150 kgs / m3。 本发明还提供了适用于进行该方法的组合物,其包含所述性质的膨胀无机材料的粘合剂和颗粒。

    UV photoactivatable curable paint formulations and cured coatings thereof
    18.
    发明授权
    UV photoactivatable curable paint formulations and cured coatings thereof 有权
    UV可光活化固化涂料配方及其固化涂料

    公开(公告)号:US09163152B2

    公开(公告)日:2015-10-20

    申请号:US13381828

    申请日:2010-06-29

    摘要: A UV photoactivatable curable paint formation for providing a cured paint coating of a desired appearance on a substrate by UV irradiation, comprises a UV curable film-forming compound; a UV photoinitiator; a particulate UV reflective material in an effective rate of curing enhancing amount without affecting the resultant desired appearance of the cured paint coating.

    摘要翻译: 通过紫外线照射在基材上提供所需外观的固化涂料的UV可光活化固化涂料组合物包括UV固化成膜化合物; UV光引发剂; 以有效的固化速率提高量的微粒UV反射材料,而不影响固化涂料涂层的所需外观。