THIOCARBONYL-BASED POLY(O-THIOCARBAMATE) COMPOUND AND PREPARATION METHOD AND USE THEREOF

    公开(公告)号:US20230002559A1

    公开(公告)日:2023-01-05

    申请号:US17625218

    申请日:2021-04-12

    Abstract: The present disclosure discloses a thiocarbonyl-based poly(O-thiocarbamate) compound and a preparation method and use thereof, belonging to the technical field of polymer chemistry and material science. The present disclosure provides a new thiocarbonyl-based poly(O-thiocarbamate)compound with a structure represented by Formula I, which has sulfur element introduced, and has good solubility and high molecular weight. The thiocarbonyl-based poly(O-thiocarbamate) compound provided has good thermal stability and a very high refractive index, and is expected to have desirable applications in the optical field.

    Methods of manufacture of thermoplastic polymers

    公开(公告)号:US11142643B2

    公开(公告)日:2021-10-12

    申请号:US16533922

    申请日:2019-08-07

    Abstract: A method of manufacture of a polyetherimide copolymer composition includes contacting a substituted phthalic anhydride and an organic diamine in the presence of diphenyl sulfone, sulfolane, or a combination comprising at least one of the foregoing solvents at a temperature of greater than 130° C. to provide a bis(phthalimide) composition comprising diphenyl sulfone, sulfolane, or a combination comprising at least one of the foregoing solvents and a bis(phthalimide); and copolymerizing the bis(phthalimide), a substituted aromatic compound, and an alkali metal salt of a dihydroxy aromatic compound in the presence of diphenyl sulfone, sulfolane, or a combination comprising at least one of the foregoing to form a polyetherimide copolymer. The method does not require any catalyst either for the imidization or the polymerization.

    Polymers and nanogel materials and methods for making and using the same

    公开(公告)号:US10073192B2

    公开(公告)日:2018-09-11

    申请号:US13840919

    申请日:2013-03-15

    Abstract: Provided are compositions comprising a block copolymer of the following formula: [A]-B-[Q], wherein [A] is a polymer that has an affinity for a substrate; B is a linking group comprising an optionally-substituted, polyvalent linking group having a molecular weight of no more than 1000 g/mole; and [Q] comprises a semi-crosslinked, ungelled polymer derived from copolymerization of an ethylenically unsaturated monomer with a poly-functional ethylenically unsaturated monomer. Such block copolymers are cross-linked via the [Q] segment, but not macroscopically gelled. The [Q] segment is hydrophilic and has a degree of polymerization in the range of about 10 to about 10,000. The [A] segment is located on at least one terminal end of said block copolymer, comprises between about 1 and about 200 repeating units. The block copolymer is associated, via the linear substrate associative segment with a surface comprising at least one hydrophobic site, such as a silicone hydrogel. The polymers may be incorporated into a formulation from which the silicone hydrogel is made or may be contacted with the silicone hydrogel post-formation.

    MOLDED ARTICLE AND MOLDING MATERIAL
    10.
    发明申请

    公开(公告)号:US20180142083A1

    公开(公告)日:2018-05-24

    申请号:US15873031

    申请日:2018-01-17

    Abstract: A molded article includes 10 to 40% by mass of reinforcing fibers (A); and 60 to 90% by mass of a matrix resin (B) mainly including a polyarylene sulfide, the molded article satisfying conditions (I) to (IV) and having a tensile strength of 240 MPa or more in a main orientation direction of the reinforcing fibers (A) in the molded article: (I) strand tensile strength of the reinforcing fibers (A) is 1.5 to 5.5 OPa; (II) number average fiber length of the reinforcing fibers (A) in the molded article is 0.4 mm or more and less than 0.6 mm; (III) tensile elongation of the matrix resin (B) is 1.5 to 10%; and (IV) interfacial shear strength between the reinforcing fibers (A) and the matrix resin (B) is 20 MPa or more.

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