Extended release plastic formulation

    公开(公告)号:US11969508B2

    公开(公告)日:2024-04-30

    申请号:US18310549

    申请日:2023-05-02

    申请人: WANKA TANKA LTD.

    发明人: Amnon Vardi

    摘要: A plastic material for extended release of a bio-active agent, the plastic material comprising a structural polymer, at least one bio-active ingredient embedded within the structural polymer as solid islands, a liquid binding material embedded within the structural polymer as granules, and a carrier liquid absorbed within the liquid-absorbent material. The carrier liquid may be sufficiently non-compatible with the structural polymer so that at least a portion of the carrier liquid is released from the liquid-absorbent material through the structural polymer to an outer surface of the plastic material over a period of time, such as a week or more, a month or more, or about three months. The bio-active agent comprised in the at least one bio-active ingredient may be sufficiently soluble in the carrier liquid at room or body temperature so that the carrier liquid released to the outer surface comprises the bio-active agent in solution.