Porous polymeric support containing biological cells in interconnected
voids
    1.
    发明授权
    Porous polymeric support containing biological cells in interconnected voids 失效
    包含生物细胞的多孔聚合物支持物

    公开(公告)号:US5071747A

    公开(公告)日:1991-12-10

    申请号:US288149

    申请日:1988-12-22

    IPC分类号: C12N5/10 C12N11/08

    CPC分类号: C12N11/08

    摘要: A porous polymeric support for biological cells is prepared having a total pore volume of at least 75% formed by a plurality of voids having an average diameter within a range of from 1 and 150 .mu.m interconnected by holes. The support is prepared by forming an emulsion containing monomers and/or prepolymers in a continuous phase and having an internal phase that forms the voids of the support, and polymerizing the monomers and/or prepolymers in the continuous phase. The emulsion may be a water-in-oil emulsion with the monomers and/or prepolymers in the oil. Biological cells are introduced into at least the voids of the support. Preferably, the voids have an average size 3 to 15 times the cell size and the holes have an average size 1 to 8 times the cell size. A compound may be produced by passing reactants into the voids via the interconnecting holes to contact the cells in the voids to cause the cells to produce the compound.

    Oral composition
    2.
    发明授权
    Oral composition 失效
    口语构成

    公开(公告)号:US5019373A

    公开(公告)日:1991-05-28

    申请号:US442741

    申请日:1989-11-29

    CPC分类号: A61Q11/00 A61K8/55

    摘要: The present invention relates to oral compositions such as dentifrices or mouthwashes.By inclusion therein of a shorter chain mono- and dialkylphosphate as surfactant, a mild product is obtained which also has improved anti-caries properties.Preferred are sodium mono- and di-octyl phosphates for use in these compositions.

    Porous material and its preparation
    5.
    发明授权
    Porous material and its preparation 失效
    多孔材料及其制备

    公开(公告)号:US4985468A

    公开(公告)日:1991-01-15

    申请号:US185671

    申请日:1988-04-25

    CPC分类号: C08J9/28 C08J2201/05

    摘要: A porous polymeric material has cell sizes within the range 100 to 0.5 .mu.m and total pore volume with respect to the overall volume of the material in the range 75 to 98% and includes cross-linked polycondensation polymeric material. The material can be made from a high internal phase emulsion in which the cross-linked polycondensation polymer is formed in the continuous phase. The materials are preferably open interconnected cellular structures. They can be made of a wide range of polycondensation materials. The materials are thus highly porous and light weight and have a range of properties depending primarily on their constituent polycondensation materials.

    摘要翻译: 多孔聚合物材料具有在100至0.5μm范围内的孔尺寸和相对于75至98%范围内的材料的总体积的总孔体积并且包括交联的缩聚聚合物材料。 该材料可以由连续相中形成交联缩聚聚合物的高内相乳液制成。 材料优选是开放的互连的细胞结构。 它们可以由各种缩聚材料制成。 因此,这些材料是高度多孔的和重量轻的并且具有一定程度的性能,主要取决于它们的构成缩聚材料。