Electrophotographic toner binder, and toner composition

    公开(公告)号:US11927914B2

    公开(公告)日:2024-03-12

    申请号:US16463070

    申请日:2017-12-13

    发明人: Takuya Koshima

    摘要: The present invention provides an electrophotographic toner binder containing, as a main component, a polymer whose constituent monomer is a monomer having an ethylenically unsaturated bond, the electrophotographic toner binder being excellent in low-temperature fixability, hot-offset resistance, and storage stability. The present invention provides an electrophotographic toner binder containing a polymer (A) containing a monomer (a) and a monomer (x) different from the monomer (a) as essential constituent monomers, wherein the monomer (a) is a (meth)acrylate having a C18-C36 acyclic hydrocarbon group, the polymer (A) has an acid value of 40 or less, and the polymer (A) satisfies the following relational expression (1):

    1.1 (cal/cm3)0.5≤|SP(x)−SP(a)|≤8.0 (cal/cm3)0.5  relational expression (1):

    wherein SP(a) is the SP value of a structural unit derived from the monomer (a) constituting the polymer (A); and

    SP(x) is the SP value of a structural unit derived from the monomer (x) different from the monomer (a) constituting the polymer (A).

    WATER/OIL REPELLENT COMPOSITION, METHOD FOR ITS PRODUCTION, AND ARTICLE

    公开(公告)号:US20180010290A1

    公开(公告)日:2018-01-11

    申请号:US15714458

    申请日:2017-09-25

    摘要: To provide a water/oil repellent composition whereby it is possible to obtain an article which is excellent in each of water-repellency, oil-repellency, washing durability, heavy rain durability and texture, a method for producing said composition, and an article which is excellent in each of water-repellency, oil-repellency, washing durability, heavy rain durability and texture. The water/oil repellent composition comprises a copolymer having units based on a monomer (a), units based on a monomer (b) and units based on a monomer (c), and a liquid medium. Monomer (a): a compound represented by (Z—Y)nX (Z: a C1-6 perfluoroalkyl group, etc.; Y: a divalent organic group, etc.; n: 1 or 2; X: a polymerizable unsaturated group). Monomer (b): a (meth)acrylate having no polyfluoroalkyl group and having an alkyl group with at least 20 carbon atoms. Monomer (c): a compound represented by CH2═CR1C(O)O—[(C2H4O)a(C4H8O)b]—H (R1: a hydrogen atom or a methyl group, and a/b=1 to 3).