POLYIMIDE COPOLYMER, AND POLYIMIDE FILM AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20220380544A1

    公开(公告)日:2022-12-01

    申请号:US17541692

    申请日:2021-12-03

    Abstract: A polyimide copolymer, a polyimide film, and a manufacturing method of the polyimide film are provided. The polyimide copolymer includes a plurality of repeating units represented by a following formula (I) and a plurality of repeating units represented by a following formula (II). A structural formula of a substituent R1 is shown as follows: A structural formula of a substituent R2 is shown as follows: In addition, the polyimide copolymer has a weight average molecular weight (Mw) of between 30,000 and 200,000.

    OPTICAL CLEAR ADHESIVE AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20200239744A1

    公开(公告)日:2020-07-30

    申请号:US16662208

    申请日:2019-10-24

    Abstract: An optical clear adhesive (OCA) and a manufacturing method thereof are provided. The OCA is a three-layer laminated structure including an OCA transparent film, a high release film coated on a lower surface of the OCA transparent film and a light release film coated on an upper surface of the OCA transparent. The high release film and the light release film contain 0.01 to 3 wt % of UV absorber. After UV light irradiation, the OCA transparent film has a suitable peeling force between the light release film and the high release film.

    POLYLACTIC ACID FIBER
    6.
    发明申请

    公开(公告)号:US20220380945A1

    公开(公告)日:2022-12-01

    申请号:US17539581

    申请日:2021-12-01

    Abstract: A polylactic acid fiber is provided. The polylactic acid fiber includes a first polylactic acid material and a second polylactic acid material. The first polylactic acid material is encapsulated by the second polylactic acid material. Based on a total volume of the polylactic acid fiber being 100%, a volume of the second polylactic acid material is at least 20%. The second polylactic acid material includes 15 wt % to 85 wt % of poly(D-lactic acid) and 15 wt % to 85 wt % of poly(L-lactic acid).

    RELEASE FILM FOR HIGH-CAPACITY MULTILAYER CERAMIC CAPACITOR AND PRODUCTION METHOD THEREOF

    公开(公告)号:US20200171791A1

    公开(公告)日:2020-06-04

    申请号:US16664208

    申请日:2019-10-25

    Abstract: A release film for high-capacity multilayer ceramic capacitor (MLCC) 0.5-0.8 μm ceramic slurry and a production method thereof. The release film includes at least three layers of co-extruded polyester resin having a layer A, a layer B and a layer C, and stretching the same in longitudinal and transverse directions. In addition, the layer B includes recycled polyester resin, the layers A and C include new polyester resin raw materials, and a releasing agent having a phenyl releasing control agent. The production method for the release film includes coating a releasing agent on one or both sides of a polyester film, and winding into a roll after drying and hardening.

    WATER-BASED ACRYLIC RESIN AND METHOD FOR PRODUCING THE SAME

    公开(公告)号:US20230044809A1

    公开(公告)日:2023-02-09

    申请号:US17853930

    申请日:2022-06-30

    Abstract: A water-based acrylic resin and a method for producing the same are provided. The water-based acrylic resin includes a polymerizable composition. The polymerizable composition includes deionized water, a reactive emulsifier, a first acrylic monomer, a second acrylic monomer, a third acrylic monomer, a fourth acrylic monomer, and an acrylic polyol. The reactive emulsifier is a nonylphenyl-free reactive emulsifier. The first acrylic monomer is an alkyl-containing (meth)acrylate. The second acrylic monomer is a hydroxyl-containing (meth)acrylate. The third acrylic monomer is a carboxyl-containing (meth)acrylate. The fourth acrylic monomer is an ethylenically-unsaturated-functional-groups-containing (meth)acrylate. The acrylic polyol is one or both of a hydroxyl-containing polyester acrylic polyol and a hydroxyl-containing polyether acrylic polyol.

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