Method for preparing poly(vinyl trifluoroacetate) and poly(vinyl
trifluoroacetate/vinyl ester) in the absence of chlorofluorocarbon
solvent
    1.
    发明授权
    Method for preparing poly(vinyl trifluoroacetate) and poly(vinyl trifluoroacetate/vinyl ester) in the absence of chlorofluorocarbon solvent 失效
    在不存在氯氟烃溶剂的情况下制备聚(乙烯基三氟乙酸酯)和聚(乙烯基三氟乙酸酯/乙烯基酯)的方法

    公开(公告)号:US5336740A

    公开(公告)日:1994-08-09

    申请号:US152393

    申请日:1993-11-12

    申请人: Gilbert L. Eian

    发明人: Gilbert L. Eian

    CPC分类号: C08F18/04 C08F8/12

    摘要: A method for the production of poly(vinyl trifluoroacetate) and copolymers thereof with vinyl esters is described. Poly(vinyl trifiuoroacetate) (PVTFA) is obtained in essentially quantitative yield under mild conditions by using non-chlorofluorocarbon solvents comprising siloxanes or perfluorinated fluids. Hexamethyl disiloxane is a particularly useful example of such solvents. Synthesis of syndiotactic PVTFA on a commercial scale without the use of environmentally-harmful solvents is made possible by the invention, which provides a convenient commercial route to syndiotactic polyvinyl alcohol.

    摘要翻译: 描述了制备聚(乙烯基三氟乙酸盐)及其与乙烯基酯的共聚物的方法。 通过使用包含硅氧烷或全氟化流体的非氯氟烃溶剂,在温和条件下以几乎定量的产率获得聚(乙烯基三氟乙酸酯)(PVTFA)。 六甲基二硅氧烷是这种溶剂的特别有用的实例。 通过本发明,可以以商业规模合成间规PVTFA而不使用环境有害的溶剂,这提供了间同立构聚乙烯醇的方便的商业途径。

    Process for preparing poly(vinyl trifluoroacetate) and
poly(vinyltrifluoroacetate/vinyl ester) copolymers in supercritical Co.sub
.
    3.
    发明授权
    Process for preparing poly(vinyl trifluoroacetate) and poly(vinyltrifluoroacetate/vinyl ester) copolymers in supercritical Co.sub . 失效
    在超临界Co2中制备聚(乙烯基三氟乙酸酯)和聚(乙烯基三氟乙酸酯/乙烯基酯)共聚物的方法

    公开(公告)号:US5559198A

    公开(公告)日:1996-09-24

    申请号:US273421

    申请日:1994-07-08

    摘要: A method for the production of poly(vinyl trifluoroacetate) and copolymers thereof with vinyl esters is described. Poly(vinyl trifluoroacetate) (PVTFA) is obtained in relatively high yield under mild conditions by using carbon dioxide under supercritical conditions as a solvent. Synthesis of syndiotactic PVTFA on a commercial scale without the use of environmentally-harmful solvents is made possible by the invention, which provides a convenient route to syndiotactic polyvinyl alcohol.

    摘要翻译: 描述了制备聚(乙烯基三氟乙酸盐)及其与乙烯基酯的共聚物的方法。 通过在超临界条件下使用二氧化碳作为溶剂,在温和条件下以相对高的产率获得聚(乙烯基三氟乙酸盐)(PVTFA)。 通过本发明可以在商业规模上合成间同立构PVTFA而不使用环境有害的溶剂,这提供了间同立构聚乙烯醇的方便途径。

    Photolabile blocked surfactants
    5.
    发明授权
    Photolabile blocked surfactants 失效
    光不稳定的表面活性剂

    公开(公告)号:US4980096A

    公开(公告)日:1990-12-25

    申请号:US144105

    申请日:1988-01-15

    摘要: Surfactants which are blocked against surfactant action (identified herein as "photolabile blocked surfactants") by a photolabile protective or masking group but which, on exposure to actinic radiation, become unblocked are provided. Coating compositions in which surfactant is formed on irradiation are provided by blending the photolabile blocked surfactant with polymeric film-forming materials.Compositions containing the photolabile blocked surfactants are useful when employed as protective coatings on various substrates or as the adhesive in a pressure sensitive adhesive tape. Although initially well adhering to a substrate, such compositions may be readily removed from the substrate following exposure of the same to suitable radiation which unblocks the surfactant to permit it to regain its surfactant activity.

    摘要翻译: 提供了通过光不稳定保护或掩蔽基团阻止表面活性剂(本文鉴定为“光不稳定封端表面活性剂”)的表面活性剂,但是在暴露于光化辐射下变得未封闭的表面活性剂。 通过将光不稳定的封闭的表面活性剂与聚合物成膜材料混合来提供其中照射时形成表面活性剂的涂料组合物。 含有光不稳定封端表面活性剂的组合物在用作各种基材上的保护涂层或作为压敏粘合带中的粘合剂时是有用的。 虽然最初很好地粘附到基底上,但是将这些组合物暴露于合适的辐射之后,可以容易地从底物中除去,该合适的辐射阻止表面活性剂使其恢复其表面活性剂活性。

    Photolabile blocked surfactants and compositions containing the same
    6.
    发明授权
    Photolabile blocked surfactants and compositions containing the same 失效
    光不稳定性封闭的表面活性剂和含有它们的组合物

    公开(公告)号:US4740600A

    公开(公告)日:1988-04-26

    申请号:US816250

    申请日:1986-01-06

    摘要: Surfactants which are blocked against surfactant action (identified herein as "photolabile blocked surfactants") by a photolabile protective or masking group but which, on exposure to actinic radiation, become unblocked are provided. Coating compositions in which surfactant is formed on irradiation are provided by blending the photolabile blocked surfactant with polymeric film-forming materials.Compositions containing the photolabile blocked surfactants are useful when employed as protective coatings on various substrates or as the adhesive in a pressure sensitive adhesive tape. Although initially well adhering to a substrate, such compositions may be readily removed from the substrate following exposure of the same to suitable radiation which unblocks the surfactant to permit it to regain its surfactant activity.

    摘要翻译: 提供了通过光不稳定保护或掩蔽基团阻止表面活性剂(本文鉴定为“光不稳定封端表面活性剂”)的表面活性剂,但是在暴露于光化辐射下变得未封闭的表面活性剂。 通过将光不稳定的封闭的表面活性剂与聚合物成膜材料混合来提供其中照射时形成表面活性剂的涂料组合物。 含有光不稳定封端表面活性剂的组合物在用作各种基材上的保护涂层或作为压敏粘合带中的粘合剂时是有用的。 虽然最初很好地粘附到基底上,但是将这些组合物暴露于合适的辐射之后,可以容易地从底物中除去,该合适的辐射阻止表面活性剂使其恢复其表面活性剂活性。

    Method for preparing poly(vinyl trifluoroacetate) and poly(vinyl
trifluoroacetate/vinyl ester) in the absence of chlorofluorocarbon
solvent
    10.
    发明授权
    Method for preparing poly(vinyl trifluoroacetate) and poly(vinyl trifluoroacetate/vinyl ester) in the absence of chlorofluorocarbon solvent 失效
    在不存在氯氟烃溶剂的情况下制备聚(乙烯基三氟乙酸酯)和聚(乙烯基三氟乙酸酯/乙烯基酯)的方法

    公开(公告)号:US5414048A

    公开(公告)日:1995-05-09

    申请号:US285784

    申请日:1994-08-04

    申请人: Gilbert L. Eian

    发明人: Gilbert L. Eian

    CPC分类号: C08F18/04 C08F8/12

    摘要: A method for the production of poly(vinyl trifluoroacetate) and copolymers thereof with vinyl esters is described. Poly(vinyl trifluoroacetate) (PVTFA) is obtained in essentially quantitative yield under mild conditions by using non-chlorofluorocarbon solvents comprising siloxanes or perfluorinated fluids. Hexamethyl disiloxane is a particularly useful example of such solvents. Synthesis of syndiotactic PVTFA on a commercial scale without the use of environmentally-harmful solvents is made possible by the invention, which provides a convenient commercial route to syndiotactic polyvinyl alcohol.

    摘要翻译: 描述了制备聚(乙烯基三氟乙酸盐)及其与乙烯基酯的共聚物的方法。 通过使用包含硅氧烷或全氟化流体的非氯氟烃溶剂,在温和条件下以基本上定量的产率获得聚(乙烯基三氟乙酸盐)(PVTFA)。 六甲基二硅氧烷是这种溶剂的特别有用的实例。 通过本发明,可以以商业规模合成间规PVTFA而不使用环境有害的溶剂,这提供了间同立构聚乙烯醇的方便的商业途径。