ACRYLIC RUBBER COMPOSITION
    8.
    发明申请

    公开(公告)号:US20230097137A1

    公开(公告)日:2023-03-30

    申请号:US17794711

    申请日:2020-12-23

    申请人: NOK CORPORATION

    IPC分类号: C08F220/10 C08K5/10 C08L33/14

    摘要: An acrylic rubber composition comprising 5 to 15 parts by weight of a plasticizer having a solubility parameter SP value (by Small's method) of 8.5 to 10.5 based on 100 parts by weight of super cold resistant grade acrylic rubber having a glass transition point Tg of −42° C. or less, wherein the acrylic rubber composition can give a vulcanizate with the TR10 value, which is an index of cold resistance, of −42° C. or less both initially and after oil dipping. In the acrylic rubber composition, first, the ratio of an acrylate monomer that constitutes acrylic rubber is adjusted, thereby the low temperature characteristics can be maintained even in an oil contact environment. This intentionally reduces the oil resistance of the vulcanized rubber molded product, thereby increasing the amount of oil swelling into the vulcanized rubber molded product and improving the flexibility in a low temperature environment.

    Bio-based polyelectrolyte complex compositions comprising non-water soluble particles

    公开(公告)号:US11525211B2

    公开(公告)日:2022-12-13

    申请号:US16282608

    申请日:2019-02-22

    申请人: ORGANOCLICKAB

    摘要: The present invention relates to a bio-based polyelectrolyte complex (PEC) composition suitable as a binder for fiber based materials, textiles, woven and nonwoven materials, said PEC composition comprising cationic biopolymer, anionic biopolymer, acid and preservative, and wherein the net charge of the PEC is cationic, the charge ratio of the anionic polymer and the cationic polymer is ≤1, the cationic biopolymer is chitosan, the anionic biopolymer is a polyanion derived from nature, the acid is a Brønsted acid and/or a Lewis acid, wherein the Brønsted acid is selected from any organic and/or inorganic acids, and wherein the Lewis acid is selected from any cationic mono- or multivalent atom, the weight ratio between cation and anion is 1:0.1 to 1:20, the weight ratio between the cation and acid is 1:0.01 to 1:30, chitosan has a degree of deacetylation being 66-100%, the pH is less than 7, and wherein said composition further comprises one or more non-water soluble particles. The present invention further relates to a method for preparing the PEC composition, uses of the PEC composition, as well as method of treating materials with the PEC composition.