Process for the preparation of crosslinked poly .beta.-alanine in the
form of microspheres
    3.
    发明授权
    Process for the preparation of crosslinked poly .beta.-alanine in the form of microspheres 失效
    以微球形式制备交联聚β-丙氨酸的方法

    公开(公告)号:US4927883A

    公开(公告)日:1990-05-22

    申请号:US283960

    申请日:1988-12-13

    摘要: A process for preparing crosslinked poly .beta.-alanine in the form of microspheres comprises (a) polymerizing acrylamide in a tert. butanol/toluene solvent mixture in the presence of a polymerization initiator and an octadecene-maleic anhydride copolymer as a suspension agent; (b) submitting the resulting suspension of poly .beta.-alanine to a crosslinking reaction using a dialdehyde as the crosslinking agent; and (c) isolating the crosslinked poly .beta.-alanine microspheres. These microspheres exhibit a low size dispersity.

    摘要翻译: 制备微球形式的交联聚β-丙氨酸的方法包括(a)在叔丁醇中聚合丙烯酰胺。 丁醇/甲苯溶剂混合物在聚合引发剂和十八碳烯 - 马来酸酐共聚物存在下作为悬浮剂; (b)使用二醛作为交联剂将所得的聚β-丙氨酸悬浮液进行交联反应; 和(c)分离交联的聚β-丙氨酸微球。 这些微球表现出较小的分散性。

    Method for reinforcement or permanent deformation of hair
    4.
    发明授权
    Method for reinforcement or permanent deformation of hair 失效
    头发加固或永久变形的方法

    公开(公告)号:US4859460A

    公开(公告)日:1989-08-22

    申请号:US119336

    申请日:1987-11-10

    IPC分类号: A45D7/04 C08L31/00 C08L33/14

    CPC分类号: A61Q5/04 A61K8/84 A61K2800/94

    摘要: A means of reinforcing and/or mechanically deforming human hair, comprising a first stage in which the hair undergoes the action of a reducing agent so as to break the disulfide linkages of the keracystine to form thiol groups, followed by the application in a second stage of a modifying agent encouraging the establishment of new chemical linkages to the thiol groups, characterized in that the aforesaid modifying agent is a polyhaloacetylated polymer whose halogen atom is capable of reacting with thiol groups.

    摘要翻译: 一种增强和/或机械变形人发的方法,包括第一阶段,其中毛发经历还原剂的作用,以便破坏角鲨烷的二硫键形成硫醇基团,随后在第二阶段 的改性剂,其促进与硫醇基团建立新的化学键,其特征在于上述改性剂是其卤素原子能够与硫醇基反应的多卤代乙酰化聚合物。