WATER-ABSORBENT STARCH COPOLYMERIZATES

    公开(公告)号:CA1090027A

    公开(公告)日:1980-11-18

    申请号:CA296616

    申请日:1978-02-08

    Abstract: Water-absorbent, starch copolymerizates are prepared by copolymerizing an ethylenically unsaturated starch with other ethylenically unsaturated monomers which contain water-attractant groups or precursors or waterattractant groups. The water-absorbent starch copolymerizates may be easily prepared into the desired configuration for a particular end-use or combined with other substrates or carriers. The unpolymerized starch and monomers or precursors thereof may be applied or incorporated into a suitable carrier or substrate (e.g., cellulosio materials such as textiles, papers, etc.) and copolymerized in situ to provide a composite article or unitary construction with the water-absorbent starch copolymerizate permenently bonded or affixed thereto.

    COPOLYMERIZED STARCH COMPOSITIONS
    16.
    发明专利

    公开(公告)号:CA1082829A

    公开(公告)日:1980-07-29

    申请号:CA274111

    申请日:1977-03-16

    Abstract: Preformed, homogeneous, non-linear starch copolymerizate articles may be prepared by copolymerizing a preformed, homogeneous mixture of water, ethylenically unsaturated starch and ethylenically unsaturated monomers to provide a labyrinth of copolymerized starch chains inter-connected with each other by the copolymerized monomeric units. The invention is particularly suitable for preparing high-binder, aqueous coating compositions which may be applied to a variety of substrates and subsequently copolymerized with polymerization initiating systems. Improved water- and detergent-resistance may be obtained by incorporating film-forming additives, cross-linking reagents or polyunsaturated compounds into the copolymerizable starch composition.

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