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    PRODUCTION OF THIOPOLYMERS BY REACTIVE EXTRUSION
    2.
    发明公开
    PRODUCTION OF THIOPOLYMERS BY REACTIVE EXTRUSION 审中-公开

    公开(公告)号：US20240043622A1

    公开(公告)日：2024-02-08

    申请号：US18019494

    申请日：2021-08-03

    申请人： Arkema Inc.

    发明人： Sangwoo PARK ,  Andrew POLLI

    IPC分类号： C08G75/14

    CPC分类号： C08G75/14

    摘要： This process for synthesizing thiopolymers involves feeding elemental sulfur or sulfides and unsaturated hydrocarbons into an extruder. The extruder is comprised of a screw and a barrel. The screw is rotated so as to pressurize, heat and mix the sulfur or sulfides and unsaturated hydrocarbon to induce inverse vulcanization thereby producing thiopolymers such as polymeric polysulfides. The invented process can be accomplished by using sulfur which becomes molten at the conditions in the extruder or is preheated and unsaturated hydrocarbons as the starting material. The materials are fed through one or more extruders so as to induce mixing and reaction of the materials forming polysulfides.

    SPECTACLE LENS
    5.
    发明公开
    SPECTACLE LENS 审中-公开

    公开(公告)号：US20230176250A1

    公开(公告)日：2023-06-08

    申请号：US18080467

    申请日：2022-12-13

    申请人： HOYA LENS THAILAND LTD.

    发明人： Masahisa KOUSAKA

    IPC分类号： G02B1/04 ,  C08G18/75 ,  C08G18/76 ,  C08G18/38 ,  C08G75/14 ,  C08K5/3475

    CPC分类号： G02B1/041 ,  C08G18/758 ,  C08G18/7635 ,  C08G18/3876 ,  C08G75/14 ,  C08K5/3475 ,  G02B1/14

    摘要： One embodiment according to the present disclosure relates to a spectacle lens containing a compound in which the transmittance of light with a wavelength of 410 nm is 5% or less and the transmittance of light with a wavelength of 430 nm is 70% or more under the following transmittance measurement conditions.
    transmittance measurement conditions:

    for a sample containing a standard resin from curing 50.28 parts by mass of a mixture of 2,5-bis(isocyanatomethyl)-bicyclo[2.2.1]heptane and 2,6-bis(isocyanatomethyl)-bicyclo[2.2.1]heptane and a mixture of 25.50 parts by mass of pentaerythritol tetrakis(3-mercaptopropionate) and 24.22 parts by mass of 1,2-bis(2-mercaptoethylthio)-3-mercaptopropane and 0.55 parts by mass of the above compound with respect to 100 parts by mass of the standard resin, the sample having a thickness of 1.6 mm at the measurement point, the transmittance of light with a wavelength of 410 nm and 430 nm is measured with a spectrophotometer.

    THERMOPLASTIC COPOLYMERS WITH A HIGH SULPHUR CONTENT AND PROCESS FOR THE PREPARATION THEREOF
    6.
    发明申请
    THERMOPLASTIC COPOLYMERS WITH A HIGH SULPHUR CONTENT AND PROCESS FOR THE PREPARATION THEREOF 有权

    公开(公告)号：US20230024579A1

    公开(公告)日：2023-01-26

    申请号：US17782859

    申请日：2020-12-03

    申请人： ENI S.P.A.

    发明人： Alberto Renato DE ANGELIS ,  Marco GUIDOLIN ,  Roberto SCATTOLIN

    IPC分类号： C08G61/08 ,  C08K3/06 ,  C08G75/14

    摘要： A thermoplastic copolymer with a high sulphur content, having sulphur in an amount greater than or equal to 40% by weight, in relation to the total weight of the thermoplastic copolymer with a high sulphur content and at least one monomer having general formula (I): wherein: R1 and R2, equal or different from each other, represent a hydrogen atom; or R1 and R2, may optionally be bound together so as to form, together with the other atoms to which they are bound, a cycloalkene containing from 4 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally substituted with C1-C20 alkyl groups; the monomer having general formula (I) being present in an amount less than or equal to 60% by weight; the thermoplastic copolymer with high sulphur content having a complex dynamic viscosity (η*), at 160° C., comprised between 1×104 Pa.s and 8×106 Pa.s.

    Polyarylene sulfide copolymer and method of producing the same
    7.
    发明授权
    Polyarylene sulfide copolymer and method of producing the same 有权

    公开(公告)号：US11440997B2

    公开(公告)日：2022-09-13

    申请号：US16962954

    申请日：2019-01-30

    申请人： Toray Industries, Inc.

    发明人： Yuichiro Miyahara ,  Yuji Yamanaka ,  Takeshi Unohara

    IPC分类号： C08G75/14 ,  B29C45/00 ,  B29K81/00

    摘要： A polyarylene sulfide copolymer has a glass transition temperature of 95° C. or higher and 190° C. or lower and has a melting point of 300° C. or lower or does not have a melting point, as measured by differential scanning calorimetry, and the copolymer containing as a structural unit arylene sulfide units having a number average molecular weight (Mn) of 1,000 or more and 10,000 or less. The polyarylene sulfide copolymer can be provided with high physical stability such as in rigidity at high temperature and excellent moldability and chemical resistance.

    Polyphenylene sulfide resin composition and molded article
    8.
    发明授权
    Polyphenylene sulfide resin composition and molded article 有权

    公开(公告)号：US11174388B2

    公开(公告)日：2021-11-16

    申请号：US16473322

    申请日：2018-02-15

    申请人： Toray Industries, Inc.

    发明人： Tomoya Yoshida ,  Hiroyuki Isago ,  Takeshi Unohara ,  Hideki Matsumoto

    IPC分类号： C08L81/04 ,  B29C45/00 ,  C08G75/14 ,  B29K81/00 ,  B29K105/00

    摘要： A polyphenylene sulfide resin composition exhibits excellent initial toughness and toughness after a long-term high temperature treatment typified by a tensile elongation at break after a dry heat treatment without impairing mechanical strength, chemical resistance and electrical insulation properties. The polyphenylene sulfide resin composition includes 0.01 to 10 parts by weight of an organosilane compound and 0.01 to 5 parts by weight of a metal salt of phosphorus oxoacid based on 100 parts by weight of a polyphenylene sulfide resin, and a tensile elongation at break, which is measured in accordance with ASTM-D638 under the conditions of a tensile speed of 10 mm/min and an ambient temperature of 23° C. after treating at 200° C. for 500 hours using an ASTM No. 4 dumbbell test piece obtained by injection molding the composition, is 10% or more.