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    • 2. 发明申请
    • INJECTION MOLDING MATERIAL CONTAINING STARCH AND PLANT PROTEIN
    • 含淀粉和植物蛋白的注射成型材料
    • WO2010070470A2
    • 2010-06-24
    • PCT/IB2009/054733
    • 2009-10-26
    • KIMBERLY-CLARK WORLDWIDE, INC.WANG, James, H.WIDEMAN, Gregory, J.SHI, BoFUNK, Sara, A.
    • WANG, James, H.WIDEMAN, Gregory, J.SHI, BoFUNK, Sara, A.
    • C08L3/02C08L89/00C08L101/00B29C45/00
    • C08L23/06B29C45/0001B29K2105/16B29K2711/00B29K2995/006C08L1/00C08L3/00C08L3/02C08L23/02C08L23/04C08L23/10C08L89/00C08L2205/02C08L2207/066Y10T428/1348Y10T428/1352C08L2666/06C08L2666/26
    • An injection molding material that includes a renewable resin containing a combination of renewable polymers (e.g., starch and plant protein) and a plasticizer is provided. Although such compounds are normally difficult to process into thermoplastics, the present inventors have discovered that injection molding materials may nevertheless be formed by melt blending the renewable resin with a synthetic resin (e.g., polyolefin) while selectively controlling the nature of the resins and their relative concentrations. In this manner, a morphology may be achieved in which the renewable resin is present as a discontinuous phase that is dispersed within a continuous phase of the synthetic resin (e.g., "island-in-the-sea" morphology). The discontinuous and continuous phases may each constitute from about 30 vol.% to about 70 vol.%, and in some embodiments, from about 40 vol.% to about 60 vol.%. With such a morphology, the continuity of the synthetic resin can minimize the aggregate properties of the renewable resin such that the molding material possesses melt properties similar to that of the synthetic resin. Further, this morphology may also minimize the need to use different molding tools as the shrinkage properties of the overall composition may be substantially similar to that of the synthetic resin.
    • 提供包含含有可再生聚合物(例如淀粉和植物蛋白)和增塑剂的组合的可再生树脂的注塑材料。 尽管这些化合物通常难以加工成热塑性塑料,但是本发明人已经发现注塑材料可以通过将可再生树脂与合成树脂(例如聚烯烃)熔融共混来形成,同时选择性地控制树脂及其相对性质 浓度。 以这种方式,可以实现可再生树脂作为分散在合成树脂的连续相内的不连续相(例如,“海中岛”形态)存在的形态。 不连续相和连续相各自可以构成从约30体积%至约70体积%,并且在一些实施方案中从约40体积%至约60体积%。 通过这样的形态,合成树脂的连续性可以使可再生树脂的聚集性能最小化,使得模制材料具有与合成树脂类似的熔融性质。 此外,由于整个组合物的收缩性质可能与合成树脂的收缩性质基本相似,所以这种形态也可以最小化使用不同模塑工具的需要。