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    • 1. 发明授权
    • Acrylic polymer, its use and process for producing it
    • 丙烯酸聚合物,其用途和生产工艺
    • US5574117A
    • 1996-11-12
    • US551762
    • 1995-11-07
    • Masatoshi YoshidaMasaya UchidaHiroyuki IshidaKenji MinamiMasuji IzubayashiYasumasa Tanaka
    • Masatoshi YoshidaMasaya UchidaHiroyuki IshidaKenji MinamiMasuji IzubayashiYasumasa Tanaka
    • C08F20/06C09D5/00C09D11/10C09D133/02C09J7/02C09J133/02C08F2/02
    • C09D11/107C08F20/06C09D133/02C09D5/008C09J133/02C09J7/0217
    • The present invention provides an acrylic polymer containing no surfactant, having little limitation in the polymer composition and being superior in heat resistance, processing operation performance and fluidity, and also provides use of the polymer and a production process. An acrylic polymer of present invention is obtained by the bulk polymerization, contains an acrylic acid-based monomer unit as a main component in its structure and has a Mn of 1,000 to 1,000,000, a glass transition temperature of -80.degree. C. or higher and a Mw/Mn ratio of 5 or less, and is appropriate for acrylic rubber, a pressure-sensitive adhesive, an alkali-soluble adhesive, an alkali-soluble film, an alkali-soluble injection molding or water ink. This polymer is produced by, in the presence of an inactive gas, carrying out the bulk polymerization of a starting material which contains a monomer component having an acrylic acid-based monomer as a main component and contains a sulfur compound of 0.001 to 20 parts by weight based on 100 parts by weight of the monomer component, and contains a polymerization initiator in the weight of one-third or less based on the sulfur compound.
    • 本发明提供不含表面活性剂的丙烯酸类聚合物,聚合物组合物几乎没有限制,耐热性,加工操作性能和流动性优异,并且还提供聚合物的使用和制备方法。 本发明的丙烯酸类聚合物通过本体聚合得到,其结构中含有丙烯酸类单体单元作为主要成分,Mn为1,000〜1,000,000,玻璃化转变温度为-80℃以上, Mw / Mn比为5以下,适用于丙烯酸橡胶,压敏粘合剂,碱溶性粘合剂,碱溶性膜,碱溶性注射成型品或水墨水。 该聚合物通过在惰性气体的存在下进行包含具有丙烯酸类单体作为主要成分的单体成分的原料的本体聚合,并含有0.001〜20份的硫化合物 基于100重量份的单体组分的重量,并且基于硫化合物含有三分之一以下重量的聚合引发剂。
    • 6. 发明授权
    • Method for production of porous cross-linked poymer
    • 多孔交联聚合物的生产方法
    • US06395792B1
    • 2002-05-28
    • US09689350
    • 2000-10-12
    • Kinya NagasunaHirotama FujimaruKenji KadonagaKozo NogiKatsuhiko SakamotoMasazumi SasabeKenji Minami
    • Kinya NagasunaHirotama FujimaruKenji KadonagaKozo NogiKatsuhiko SakamotoMasazumi SasabeKenji Minami
    • C08J928
    • C08J9/283C08F2/32C08J2201/028
    • An object of this invention is to provide a method for the production of a porous cross-linked polymer, which permits the polymerization (curing) of a water in oil type high internal phase emulsion (HIPE) in such an exceptionally brief time as not more than 30 minutes, preferably not more than 10 minutes without impairing the stability of the HIPE. The object of this invention mentioned above can be accomplished by a method for the production of a porous cross-linked polymer which comprises steps of mixing an oil phase containing a polymerizing monomer, a cross-linking monomer, and a surfactant as essential components with a water phase containing water as an essential component thereby obtaining a water in oil type high internal phase emulsion and heating said emulsion to a prescribed curing temperature thereby polymerizing the emulsion, wherein said emulsion is formed in a thickness of not more than 50 mm and the temperature-increasing rate of the emulsion is not less than 5° C./minute.
    • 本发明的目的是提供一种生产多孔交联聚合物的方法,其允许在非常短的时间内将油包水型高内相乳液(HIPE)中的聚合(固化)不再多 超过30分钟,优选不超过10分钟,而不损害HIPE的稳定性。 上述本发明的目的可以通过生产多孔交联聚合物的方法来实现,该方法包括以下步骤:将含有聚合单体的油相,交联单体和表面活性剂作为必需组分混合, 水相作为必要成分,由此获得油包水型高内相乳液,并将所述乳液加热到规定的固化温度,从而使乳液聚合,其中所述乳液的形成厚度不大于50mm,温度 - 乳液的增加速度不低于5℃/分钟。