公开(公告)号：US20240110018A1

公开(公告)日：2024-04-04

申请号：US18539951

申请日：2023-12-14

Applicant: LG Chem, Ltd.

Inventor： Tae Young Won ,  Hyemin Lee ,  Junwye Lee ,  Seongbeom Heo ,  Kwangin Shin ,  Chang Hun Han

IPC: C08J3/075 ,  C08J3/12 ,  C08J3/24 ,  C08L101/14

CPC classification number: C08J3/075 ,  C08J3/12 ,  C08J3/24 ,  C08L101/14 ,  C08J2323/06 ,  C08L2312/00

Abstract: The present disclosure relates to a preparation method of a super absorbent polymer having excellent basic absorbency and liquid permeability at the same time by optimizing the degree of cross-linking of a base resin powder and a surface cross-linked layer, and a super absorbent polymer prepared therefrom. The preparation method of a super absorbent polymer includes the steps of: forming a hydrogel polymer by cross-linking and polymerizing a monomer composition including a water-soluble ethylene-based unsaturated monomer having at least partially neutralized acidic groups and an internal cross-linking agent; drying, pulverizing and classifying the hydrogel polymer to form a base resin powder; and forming a surface cross-linked layer by further cross-linking a surface of the base resin powder in the presence of a surface cross-linking agent, wherein the water-soluble ethylene-based unsaturated monomer has a degree of neutralization of less than 70 mol % in the step of forming a hydrogel polymer, and the preparation method further includes a step of further neutralizing the base resin powder by treating the base resin powder with a basic solution during the step of forming a surface cross-linked layer or after the step of forming a surface cross-linked layer.

公开(公告)号：US11802822B2

公开(公告)日：2023-10-31

申请号：US17111135

申请日：2020-12-03

Applicant: Massachusetts Institute of Technology

Inventor： Pablo Valdes Quevedo ,  Yongxin Zhao ,  Edward Stuart Boyden

IPC: G01N1/36 ,  C08L101/14 ,  G01N1/30

CPC classification number: G01N1/36 ,  C08L101/14 ,  G01N2001/305 ,  G01N2001/364

Abstract: The invention provides a method for preparing an expanded biological specimen suitable for microscopic analysis. Expanding the biological sample can be achieved by anchoring biomolecules to a polymer network and swelling, or expanding, the polymer network, thereby moving the biomolecules apart as further described below. As the biomolecules are anchored to the polymer network isotropic expansion of the polymer network retains the spatial orientation of the biomolecules resulting in an expanded, or enlarged, biological specimen.

公开(公告)号：US10081697B2

公开(公告)日：2018-09-25

申请号：US15376700

申请日：2016-12-13

Applicant: Novartis AG

Inventor： Jinyu Huang ,  Frank Chang ,  Steve Yun Zhang ,  Feng Jing

IPC: C08L101/14 ,  C08L83/04 ,  C08F290/06 ,  G02B1/04 ,  C08G77/20 ,  C08G77/16 ,  C08G77/392 ,  C08G77/12

CPC classification number: C08F290/068 ,  C08G77/12 ,  C08G77/16 ,  C08G77/20 ,  C08G77/392 ,  G02B1/043 ,  C08L83/04 ,  C08L101/14

Abstract: The invention provides a hydrophilized polydiorganosiloxane vinylic crosslinker which comprises (1) a polydiorganosiloxane polymer chain comprising dimethylsiloxane units and hydrophilized siloxane units each having one methyl substituent and one monovalent C4-C40 organic radical substituent having two to six hydroxyl groups, wherein the molar ratio of the hydrophilized siloxane units to the dimethylsiloxane units is from about 0.035 to about 0.15, and (2) two terminal (meth)acryloyl groups. The hydrophilized polydiorganosiloxane vinylic crosslinker has a number average molecular weight of from about 3000 Daltons to about 80,000 Daltons. The present invention is also related to a silicone hydrogel contact lens, which comprises repeating units derived from a hydrophilized polydiorganosiloxane vinylic crosslinker of the invention.

公开(公告)号：US20180264380A1

公开(公告)日：2018-09-20

申请号：US15886294

申请日：2018-02-01

Applicant: NISSAN CHEMICAL INDUSTRIES, LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  TOYOTA BOSHOKU KABUSHIKI KAISHA

Inventor： Yoshihiro KUDO ,  Ippei FUKUTOMI ,  Yasuhiro SHIMAKURA ,  Yoji HORIUCHI

IPC: B01D17/02 ,  B01D35/00 ,  C02F1/68

CPC classification number: B01D17/0214 ,  B01D17/0202 ,  B01D35/005 ,  B01J20/10 ,  B01J20/12 ,  B01J20/22 ,  B01J20/261 ,  B01J2220/46 ,  C02F1/681 ,  C08L33/02 ,  C08L101/14

Abstract: A water absorbing and releasing body that absorbs water in engine oil and releases water when the temperature of the engine oil is high in order to maintain the performance of the engine oil, automotive parts including the water absorbing and releasing body, and a method for producing the water absorbing and releasing body for engine oil.

公开(公告)号：US10073192B2

公开(公告)日：2018-09-11

申请号：US13840919

申请日：2013-03-15

Applicant: Johnson & Johnson Vision Care, Inc.

Inventor： Charles W. Scales ,  Kevin P. McCabe ,  Brent Matthew Healy

IPC: C08L101/14 ,  C08L81/00 ,  G02B1/04 ,  B82Y30/00 ,  C08J7/00 ,  C08F293/00 ,  C08L53/00

CPC classification number: G02B1/043 ,  B82Y30/00 ,  C08F293/005 ,  C08J7/00 ,  C08L53/00 ,  C08L101/14 ,  C08L83/04 ,  C08L81/00

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.

公开(公告)号：US20180173010A1

公开(公告)日：2018-06-21

申请号：US15875264

申请日：2018-01-19

Applicant: OneFocus Vision, Inc.

Inventor： Adam HARANT ,  Amelia DAVENPORT ,  Neil CRAMER ,  Steve WAITE ,  Amitava GUPTA ,  William J. LINK ,  Gamil ALHAKIMI ,  Lisa STUDNICKI ,  Musa ALHAKIMI

IPC: G02C7/04 ,  B29D11/00 ,  B29K105/00

CPC classification number: G02C7/049 ,  B29C39/021 ,  B29C39/10 ,  B29C39/12 ,  B29C41/22 ,  B29D11/00 ,  B29D11/00038 ,  B29D11/00048 ,  B29D11/00125 ,  B29D11/00134 ,  B29K2105/0002 ,  B29K2105/0035 ,  B29K2105/20 ,  B29K2629/04 ,  B29K2995/0059 ,  B29L2011/0041 ,  G02B1/04 ,  G02B1/043 ,  G02C7/04 ,  G02C7/048 ,  G02C7/085 ,  C08L101/14 ,  C08L33/10 ,  C08L33/26

Abstract: A lens comprises an internal cavity structure formed by dissolution of a soluble insert material. The internal soluble material may dissolve through a body of a lens such as a contact lens in order to form the cavity within the contact lens. The cavity within the lens can be shaped in many ways, and corresponds to the shape of the dissolved material, such that many internal cavity shapes can be readily fabricated within the contact lens. The insert can be placed in a mold with a pre-polymer material, and the pre-polymer material cured with the insert placed in the mold to form the lens body. The polymerized polymer may comprise a low expansion polymer in order to inhibit expansion of the lens when hydrated. The polymer may comprise a hydrogel when hydrated. The soft contact lens material comprises a sufficient amount of cross-linking to provide structure to the lens and shape the cavity.

公开(公告)号：US09982110B2

公开(公告)日：2018-05-29

申请号：US15123899

申请日：2015-03-19

Applicant: Nagase ChemteX Corporation

Inventor： Tetsuya Hosomi ,  Masato Fushiki ,  Toyohiro Nagano

IPC: C08K5/053 ,  C08J3/24 ,  A61L15/60 ,  C08L101/14 ,  A61L15/22 ,  B01J20/26 ,  C07C31/36 ,  C07C31/42 ,  C07C41/03 ,  C07C43/13

CPC classification number: C08K5/053 ,  A61L15/22 ,  A61L15/60 ,  B01J20/267 ,  C07C31/36 ,  C07C31/42 ,  C07C41/03 ,  C07C43/137 ,  C08J3/24 ,  C08J3/245 ,  C08J2333/02 ,  C08J2333/08 ,  C08L101/14

Abstract: The present invention aims to provide a water-absorbing resin crosslinking agent which is excellent in safety and which can effectively crosslink a water-absorbing resin at low temperatures to produce a water-absorbing agent having a high water absorption capacity. The present invention also aims to provide a water-absorbing agent produced by crosslinking a water-absorbing resin with the water-absorbing resin crosslinking agent, and a method for producing the water-absorbing agent. The present invention may include a water-absorbing resin crosslinking agent containing a halohydrin compound having one halohydrin group represented by the following formula (1) in its molecule: wherein A represents a single bond or an alkylene group; R1 represents a hydrogen atom or an alkyl group; and X represents a chlorine atom or a bromine atom.

公开(公告)号：US09921340B2

公开(公告)日：2018-03-20

申请号：US14883142

申请日：2015-10-14

Applicant: Novartis AG

Inventor： Jinyu Huang ,  Frank Chang ,  Robert Scott ,  Arturo Norberto Medina ,  Venkat Shankar ,  Selma Kuyu ,  Dawn Alison Smith ,  Daqing Wu

IPC: G02C7/04 ,  G02B1/04 ,  C08G77/42 ,  C08G77/442 ,  C08L83/10 ,  C08J3/075 ,  C08G77/20

CPC classification number: G02B1/043 ,  C08G77/20 ,  C08G77/42 ,  C08G77/442 ,  C08J3/075 ,  C08J2343/04 ,  C08J2383/08 ,  C08L83/10 ,  C08L101/14 ,  C08L83/04

Abstract: The invention provide a class of water-processable polymerizable prepolymers which comprises (1) siloxane-containing monomeric units derived at least one siloxane containing monomer having one hydrophilic group or chain and/or polysiloxane-containing crosslinking units derived from at least one hydrophilized polysiloxane or chain-extended polysiloxane crosslinker; (2) hydrophilic monomeric units derived from one or more hydrophilic vinylic monomers; and (3) from about 0.05% to about 5% by weight of polymerizable units each having a pendant or terminal, ethylenically-unsaturated group and free of any polysiloxane segment. The prepolymer comprises from about 20% to about 50% by weight of silicone relative to the total weight of the prepolymer and has a high water solubility or dispersibility of at least about 5% by weight in water and suitable for making silicone hydrogel contact lenses.

公开(公告)号：US09904074B2

公开(公告)日：2018-02-27

申请号：US14104300

申请日：2013-12-12

Applicant: Johnson & Johnson Vision Care, Inc.

Inventor： Donnie J. Duis ,  Yongcheng Li ,  Leilani K. Sonoda ,  Holly L. Grammer

IPC: G02C7/04 ,  B29D11/00 ,  G02B1/04 ,  G02C7/10

CPC classification number: G02C7/04 ,  B29D11/00048 ,  B29D11/00653 ,  G02B1/043 ,  G02C7/102 ,  C08L101/14

Abstract: A method for making a hydrogel, photochromic contact lens including supplying a first lens composition comprising a contact lens monomer and a photochromic material to a front contact lens mold and supplying a second lens composition to said contact lens mold wherein the viscosity of said first composition is at least about 1000 cp greater than the viscosity of said second contact lens composition, and the makeup of said second composition matches the of said first composition to reduce strain between said compositions of the resulting lens.

公开(公告)号：US09869884B2

公开(公告)日：2018-01-16

申请号：US14948683

申请日：2015-11-23

Applicant: Innovega, Inc.

Inventor： William E. Meyers ,  Jerome A. Legerton ,  Jay P. Marsh

IPC: B32B25/08 ,  B32B25/20 ,  B32B27/40 ,  G02B1/04 ,  G02C7/04 ,  B32B27/28 ,  B32B27/30 ,  B32B27/32 ,  B32B27/08 ,  B29C39/00 ,  B29L11/00

CPC classification number: G02C7/049 ,  B29C39/00 ,  B29L2011/0041 ,  B32B27/08 ,  B32B27/283 ,  B32B27/308 ,  B32B27/322 ,  B32B27/40 ,  B32B2250/02 ,  B32B2307/702 ,  B32B2307/704 ,  B32B2307/724 ,  B32B2307/726 ,  B32B2551/00 ,  C08L83/04 ,  G02B1/043 ,  G02C2202/16 ,  C08L101/14

Abstract: A contact lens constructed to limit the water transmissibility of at least one area of the lens while maintaining at least a minimum oxygen transmissibility. The water transmissibility maximum and oxygen permeability minimum are achieved by a predetermined lens thickness of a single lens material or by the use of two or more material layers.