SG52605A1 - Reaction injection molding as a process to prepare contact lenses - Google Patents

Reaction injection molding as a process to prepare contact lenses

Info

Publication number
SG52605A1
SG52605A1 SG1996006658A SG1996006658A SG52605A1 SG 52605 A1 SG52605 A1 SG 52605A1 SG 1996006658 A SG1996006658 A SG 1996006658A SG 1996006658 A SG1996006658 A SG 1996006658A SG 52605 A1 SG52605 A1 SG 52605A1
Authority
SG
Singapore
Prior art keywords
injection molding
contact lenses
reaction injection
prepare contact
prepare
Prior art date
Application number
SG1996006658A
Other languages
English (en)
Inventor
Gregory A Hill
Kurt C Frisch
Shaio-Wen Long
Vahid Sendijarevic
Original Assignee
Johnson & Johnson Vision Prod
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson & Johnson Vision Prod filed Critical Johnson & Johnson Vision Prod
Publication of SG52605A1 publication Critical patent/SG52605A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00038—Production of contact lenses
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/02—Artificial eyes from organic plastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/50—Polyethers having heteroatoms other than oxygen
    • C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
    • C08G18/5024—Polyethers having heteroatoms other than oxygen having nitrogen containing primary and/or secondary amino groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/63—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
    • C08G18/637—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers characterised by the in situ polymerisation of the compounds having carbon-to-carbon double bonds in a reaction mixture of saturated polymers and isocyanates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
    • C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/02—Polyureas
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • G02B1/043—Contact lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses
    • B29L2011/0041—Contact lenses
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2120/00—Compositions for reaction injection moulding processes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2270/00—Compositions for creating interpenetrating networks
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S525/00—Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S525/903—Interpenetrating network

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Eyeglasses (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
SG1996006658A 1995-03-31 1996-03-29 Reaction injection molding as a process to prepare contact lenses SG52605A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/415,000 US5656210A (en) 1995-03-31 1995-03-31 Reaction injection molding as a process to prepare contact lenses

Publications (1)

Publication Number Publication Date
SG52605A1 true SG52605A1 (en) 1998-09-28

Family

ID=23643934

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996006658A SG52605A1 (en) 1995-03-31 1996-03-29 Reaction injection molding as a process to prepare contact lenses

Country Status (18)

Country Link
US (1) US5656210A (de)
EP (1) EP0748685B1 (de)
JP (1) JPH08294936A (de)
KR (1) KR960033718A (de)
CN (1) CN1056557C (de)
AT (1) ATE198342T1 (de)
AU (1) AU693010B2 (de)
BR (1) BR9601202A (de)
CA (1) CA2173095A1 (de)
DE (1) DE69611323T2 (de)
HU (1) HUP9600833A3 (de)
IL (1) IL117586A0 (de)
MX (1) MX9601226A (de)
NO (1) NO961283L (de)
NZ (1) NZ286251A (de)
SG (1) SG52605A1 (de)
TW (1) TW327151B (de)
ZA (1) ZA962561B (de)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6190603B1 (en) * 1997-07-19 2001-02-20 Novartis Ag Process for producing mouldings
AU9743298A (en) * 1997-09-16 1999-04-05 Novartis Ag Crosslinkable polyurea polymers
US6382946B1 (en) * 1998-04-01 2002-05-07 Dtl Technology Limited Partnership Molding multi-layered articles using coinjection techniques
WO2000002937A1 (en) * 1998-07-08 2000-01-20 Sunsoft Corporation Interpenetrating polymer network hydrophilic hydrogels for contact lens
US6241918B1 (en) 1998-12-28 2001-06-05 Johnson & Johnson Vision Care, Inc. Process of manufacturing contact lenses in ambient environment
US6943348B1 (en) * 1999-10-19 2005-09-13 Masimo Corporation System for detecting injection holding material
FR2809736A1 (fr) 2000-05-31 2001-12-07 Corning Sa Preparation d'une composition stable de monomeres copolymerisables radicalairement, renfermant au moins un monomere a fonction(s) uree
ATE317758T1 (de) * 2001-01-24 2006-03-15 Novartis Pharma Gmbh Verfahren zur herstellung von linsen
CA2371965C (en) * 2001-02-23 2010-07-06 Johnson & Johnson Vision Care, Inc. Colorants for use in tinted contact lenses and methods for their production
US6939486B2 (en) * 2002-06-25 2005-09-06 Bausch & Lomb Incorporated Apparatus and method for making intraocular lenses
US7186442B2 (en) * 2003-06-11 2007-03-06 Sika Technology Ag Constrained layer damper
US7977430B2 (en) * 2003-11-25 2011-07-12 Novartis Ag Crosslinkable polyurea prepolymers
EP1568474B1 (de) * 2004-02-27 2008-07-23 INSA (Institut National des Sciences Appliqées) Verfahren und Vorrichtung zur Herstellung von einer optischen Linse
US8147728B2 (en) 2004-04-01 2012-04-03 Novartis Ag Pad transfer printing of silicone hydrogel lenses using colored ink
JP5014981B2 (ja) 2004-04-21 2012-08-29 ノバルティス アーゲー 着色シリコーンヒドロゲルレンズ製造用硬化性着色インク
US9248614B2 (en) * 2004-06-30 2016-02-02 Novartis Ag Method for lathing silicone hydrogel lenses
US7857849B2 (en) * 2004-10-05 2010-12-28 The Board Of Trustees Of The Leland Stanford Junior Iniversity Artificial corneal implant
US20090088846A1 (en) 2007-04-17 2009-04-02 David Myung Hydrogel arthroplasty device
FR2886574B1 (fr) * 2005-06-06 2009-07-10 Essilor Int Moule et procede de moulage, notamment par moulage par injection reactive, en particulier d'un element optique en materiau polymere
US7858000B2 (en) * 2006-06-08 2010-12-28 Novartis Ag Method of making silicone hydrogel contact lenses
DK2038310T3 (da) 2006-07-12 2010-09-27 Novartis Ag Aktinisk tværbindelige copolymerer til fremstilling af kontaktlinser
AR064286A1 (es) * 2006-12-13 2009-03-25 Quiceno Gomez Alexandra Lorena Produccion de dispositivos oftalmicos basados en la polimerizacion por crecimiento escalonado fotoinducida
JP5669396B2 (ja) 2006-12-13 2015-02-12 ノバルティス アーゲー 化学線硬化性シリコーンヒドロゲルコポリマーおよびその使用
CN101535034A (zh) * 2006-12-21 2009-09-16 诺瓦提斯公司 高强度uv模具预处理
KR101409581B1 (ko) 2007-05-18 2014-06-20 쿠퍼비젼 인터내셔날 홀딩 캄파니, 엘피 콘텍트 렌즈를 형성하기 위한 열 경화 방법 및 시스템
TWI419719B (zh) 2007-08-31 2013-12-21 Novartis Ag 隱形眼鏡產物
US20090068250A1 (en) * 2007-09-07 2009-03-12 Philippe Gravagna Bioresorbable and biocompatible compounds for surgical use
US20090155958A1 (en) * 2007-12-13 2009-06-18 Boris Kolodin Robust die bonding process for led dies
US20120209396A1 (en) 2008-07-07 2012-08-16 David Myung Orthopedic implants having gradient polymer alloys
KR20110040969A (ko) 2008-08-05 2011-04-20 바이오미메디카, 인코포레이티드 폴리우레탄-그라프트된 하이드로겔
CA2808528A1 (en) 2010-08-27 2012-03-01 Biomimedica, Inc. Hydrophobic and hydrophilic interpenetrating polymer networks derived from hydrophobic polymers and methods of preparing the same
EP2637847B1 (de) 2010-11-10 2014-07-23 Novartis AG Verfahren zur herstellung von kontaktlinsen
EP2652544B1 (de) 2010-12-14 2020-08-19 Alcon Inc. Gefärbte kontaktlinse
WO2013052105A2 (en) 2011-10-03 2013-04-11 Biomimedica, Inc. Polymeric adhesive for anchoring compliant materials to another surface
CA2856512A1 (en) 2011-11-21 2013-05-30 Biomimedica, Inc. Systems, devices, and methods for anchoring orthopaedic implants to bone
MY164100A (en) 2011-12-31 2017-11-30 Novartis Ag Method of making contact lenses with identifying mark
WO2013101481A1 (en) 2011-12-31 2013-07-04 Novartis Ag Method of making colored contact lenses
GB201207481D0 (en) 2012-04-26 2012-06-13 Zephyros Inc Applying flowable materials to synthetic substrates
US11077228B2 (en) 2015-08-10 2021-08-03 Hyalex Orthopaedics, Inc. Interpenetrating polymer networks
WO2017115167A1 (en) 2015-12-28 2017-07-06 Novartis Ag Curable colored inks for making colored silicone hydrogel lenses
US11254789B2 (en) 2017-02-16 2022-02-22 Momentive Performance Materials Inc. Ionically modified silicones, compositions, and medical devices formed therefrom
US10869950B2 (en) 2018-07-17 2020-12-22 Hyalex Orthopaedics, Inc. Ionic polymer compositions
MY204221A (en) 2019-05-28 2024-08-16 Alcon Inc Method for making opaque colored silicone hydrogel contact lenses
WO2021124120A1 (en) 2019-12-19 2021-06-24 Alcon Inc. Cosmetic contact lens for color blindness
TWI859401B (zh) 2020-01-27 2024-10-21 新加坡商科萊博新加坡私人有限公司 光化可交聯的聚矽氧烷－聚甘油嵌段共聚物及其製造和使用方法
US20240216823A1 (en) 2020-04-28 2024-07-04 Diamant Toys Ltd Gaming kits and methods of playing with housings reconfigurable by retrievable unlocking elements
US20230384482A1 (en) 2022-05-25 2023-11-30 Alcon Inc. Sandwich colored hydrogel contact lenses

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3503942A (en) * 1965-10-23 1970-03-31 Maurice Seiderman Hydrophilic plastic contact lens
US4254065A (en) * 1979-04-04 1981-03-03 Ratkowski Donald J Injection molding of contact lenses
US4386039A (en) * 1980-02-11 1983-05-31 Thermo Electron Corporation Process for forming an optically clear polyurethane lens or cornea
US4359558A (en) * 1980-11-12 1982-11-16 Tyndale Plains-Hunter, Ltd. Polyurethane diacrylate compositions
US4496535A (en) * 1980-11-12 1985-01-29 Tyndale Plains-Hunter, Ltd. Polyurethane polyene compositions
US4454309A (en) * 1980-11-12 1984-06-12 Tyndale Plains-Hunter, Ltd. Polyurethane polyene compositions
US4408023A (en) * 1980-11-12 1983-10-04 Tyndale Plains-Hunter, Ltd. Polyurethane diacrylate compositions useful for contact lenses and the like
US4430458A (en) * 1981-10-08 1984-02-07 Kelvin Lenses Limited Hydrogel-forming polymeric materials
FR2539135B1 (fr) * 1983-01-11 1986-02-28 Essilor Int Hydrogels de polyurethane et procede de fabrication
US4536554A (en) * 1984-02-22 1985-08-20 Barnes-Hind, Inc. Hydrophilic polymers and contact lenses made therefrom
JPH0692457B2 (ja) * 1985-05-30 1994-11-16 日本石油株式会社 射出成形性の改良された超高分子量ポリエチレン組成物
US4880872A (en) * 1986-04-03 1989-11-14 Ici Americas Inc. Heat resistant high modulus reaction injection molding (RIM) polymers, blends used in the production thereof and a process for producing the same
US4780488A (en) * 1986-08-29 1988-10-25 Ciba-Geigy Corporation Wettable, flexible, oxygen permeable, substantially non-swellable contact lens containing polyoxyalkylene backbone units, and use thereof
DE3784152T3 (de) * 1986-12-26 1997-03-20 Nippon Catalytic Chem Ind Harz mit hohem Brechungsindex, Verfahren zu seiner Herstellung und optische Materialien aus diesem Harz.
JPH0788025B2 (ja) * 1987-04-28 1995-09-27 三菱瓦斯化学株式会社 偏肉補強部構造を有する合成樹脂成形品の製造法
US4857606A (en) * 1987-06-05 1989-08-15 Ciga-Geigy Corporation Wettable, flexible, oxygen permeable, substantially non-swellable contact lens containing polyoxyalkylene backbone units, and use thereof
US4786657A (en) * 1987-07-02 1988-11-22 Minnesota Mining And Manufacturing Company Polyurethanes and polyurethane/polyureas crosslinked using 2-glyceryl acrylate or 2-glyceryl methacrylate
US4859780A (en) * 1988-02-26 1989-08-22 Ciba-Geigy Corporation Hydrophilic modifier monomers
ES2068909T3 (es) * 1988-02-26 1995-05-01 Ciba Geigy Ag Una lente de contacto humectable, flexible, permeable al oxigeno y que contiene unidades de espina dorsal de polioxialquileno y uso de la misma.
US5087392A (en) * 1988-05-31 1992-02-11 Sola Usa, Inc. Method of mold contact lenses
US4983702A (en) * 1988-09-28 1991-01-08 Ciba-Geigy Corporation Crosslinked siloxane-urethane polymer contact lens
US5039769A (en) * 1989-10-11 1991-08-13 Ciba-Geigy Coproation Wettable, flexible, oxygen permeable, substantially non-swellable contact lens containing polyoxyalkylene backbone units, and use thereof
US5170192A (en) * 1990-11-29 1992-12-08 Pilkington Visioncare, Inc. Oxygen permeable bifocal contact lenses and their manufacture
US5356946A (en) * 1991-12-09 1994-10-18 Miles Inc. Process for preparing reaction injection moldings
US5451651A (en) * 1993-12-17 1995-09-19 Bausch & Lomb Incorporated Urea and urethane monomers for contact lens materials

Also Published As

Publication number Publication date
HUP9600833A3 (en) 1998-07-28
AU693010B2 (en) 1998-06-18
NO961283L (no) 1996-10-01
HUP9600833A2 (en) 1997-01-28
ZA962561B (en) 1997-09-29
JPH08294936A (ja) 1996-11-12
KR960033718A (ko) 1996-10-22
US5656210A (en) 1997-08-12
TW327151B (en) 1998-02-21
CN1056557C (zh) 2000-09-20
EP0748685A3 (de) 1997-10-01
DE69611323D1 (de) 2001-02-01
HU9600833D0 (en) 1996-05-28
AU5039596A (en) 1996-10-10
DE69611323T2 (de) 2001-04-26
ATE198342T1 (de) 2001-01-15
BR9601202A (pt) 1998-01-06
CA2173095A1 (en) 1996-10-01
EP0748685A2 (de) 1996-12-18
CN1143566A (zh) 1997-02-26
IL117586A0 (en) 1996-07-23
EP0748685B1 (de) 2000-12-27
NO961283D0 (no) 1996-03-29
MX9601226A (es) 1997-03-29
NZ286251A (en) 1997-08-22

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