CS239282B1 - Preparation method of objects made from hydrophilic gelsnamely contact lences by polymer casting - Google Patents

Preparation method of objects made from hydrophilic gelsnamely contact lences by polymer casting Download PDF

Info

Publication number
CS239282B1
CS239282B1 CS836009A CS600983A CS239282B1 CS 239282 B1 CS239282 B1 CS 239282B1 CS 836009 A CS836009 A CS 836009A CS 600983 A CS600983 A CS 600983A CS 239282 B1 CS239282 B1 CS 239282B1
Authority
CS
Czechoslovakia
Prior art keywords
hydrophilic
monomers
casting
mold
polymerization
Prior art date
Application number
CS836009A
Other languages
Czech (cs)
English (en)
Other versions
CS600983A1 (en
Inventor
Otto Wichterle
Original Assignee
Otto Wichterle
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 Otto Wichterle filed Critical Otto Wichterle
Priority to CS836009A priority Critical patent/CS239282B1/cs
Priority to US06/597,334 priority patent/US4534916A/en
Priority to CA000453495A priority patent/CA1231215A/fr
Priority to GB08411344A priority patent/GB2145028B/en
Publication of CS600983A1 publication Critical patent/CS600983A1/cs
Publication of CS239282B1 publication Critical patent/CS239282B1/cs

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/56Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/60Releasing, lubricating or separating agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00Producing optical elements, e.g. lenses or prisms
    • B29D11/00009Production of simple or compound lenses
    • B29D11/00038Production of contact lenses
    • B29D11/00125Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/042Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
    • B29C41/045Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry the axis being placed vertically, e.g. spin casting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2033/00Use of polymers of unsaturated acids or derivatives thereof as moulding material
    • B29K2033/04Polymers of esters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2823/00Use of polyalkenes or derivatives thereof as mould material
    • B29K2823/10Polymers of propylene
    • B29K2823/12PP, i.e. polypropylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00Optical elements, e.g. lenses, prisms
    • B29L2011/0016Lenses
    • B29L2011/0041Contact lenses
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S525/00Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S525/937Utility as body contact e.g. implant, contact lens or I.U.D.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Eyeglasses (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
CS836009A 1983-08-17 1983-08-17 Preparation method of objects made from hydrophilic gelsnamely contact lences by polymer casting CS239282B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CS836009A CS239282B1 (en) 1983-08-17 1983-08-17 Preparation method of objects made from hydrophilic gelsnamely contact lences by polymer casting
US06/597,334 US4534916A (en) 1983-08-17 1984-04-06 Method for the preparation of hydrophilic gels by monomer casting
CA000453495A CA1231215A (fr) 1983-08-17 1984-05-03 Preparation de gels hydrophiles par coulee de manomeres
GB08411344A GB2145028B (en) 1983-08-17 1984-05-03 Monomer casting of hydrophilic gels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS836009A CS239282B1 (en) 1983-08-17 1983-08-17 Preparation method of objects made from hydrophilic gelsnamely contact lences by polymer casting

Publications (2)

Publication Number Publication Date
CS600983A1 CS600983A1 (en) 1985-05-15
CS239282B1 true CS239282B1 (en) 1986-01-16

Family

ID=5406205

Family Applications (1)

Application Number Title Priority Date Filing Date
CS836009A CS239282B1 (en) 1983-08-17 1983-08-17 Preparation method of objects made from hydrophilic gelsnamely contact lences by polymer casting

Country Status (4)

Country Link
US (1) US4534916A (fr)
CA (1) CA1231215A (fr)
CS (1) CS239282B1 (fr)
GB (1) GB2145028B (fr)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE40214T1 (de) * 1983-10-04 1989-02-15 Intracel Corp Verfahren zum giessen von bei der duennschichtelektrophoreseverwendbaren gelen.
GB8508247D0 (en) * 1985-03-29 1985-05-09 Sola Int Holdings Contact lenses
US4713244A (en) * 1985-08-16 1987-12-15 Bausch & Lomb Incorporated Sustained-release formulation containing an amino acid polymer with a lower alkyl (C1 -C4) polar solvent
US4668506A (en) * 1985-08-16 1987-05-26 Bausch & Lomb Incorporated Sustained-release formulation containing and amino acid polymer
DE3635367A1 (de) * 1986-08-30 1988-03-03 Cassella Ag Verfahren zur herstellung eines weitgehend monomerenfreien hydrogels
US5753730A (en) * 1986-12-15 1998-05-19 Mitsui Toatsu Chemicals, Inc. Plastic lenses having a high-refractive index, process for the preparation thereof and casting polymerization process for preparing sulfur-containing urethane resin lens and lens prepared thereby
CA1316315C (fr) * 1988-02-22 1993-04-20 Nobuyuki Kajimoto Lentille plastique a indice de refraction eleve, procede de fabrication
CA2009668A1 (fr) 1989-02-16 1990-08-16 Ashok R. Thakrar Verres de contact teintes et methode de fabrication
US4983332A (en) * 1989-08-21 1991-01-08 Bausch & Lomb Incorporated Method for manufacturing hydrophilic contact lenses
US5079878A (en) * 1990-02-15 1992-01-14 Bausch & Lomb Incorporated Soft contact lens processing aid
US5080839A (en) * 1990-04-17 1992-01-14 Johnson & Johnson Vision Products, Inc. Process for hydrating soft contact lenses
US5177165A (en) * 1990-11-27 1993-01-05 Bausch & Lomb Incorporated Surface-active macromonomers
US5135297A (en) * 1990-11-27 1992-08-04 Bausch & Lomb Incorporated Surface coating of polymer objects
US5219965A (en) * 1990-11-27 1993-06-15 Bausch & Lomb Incorporated Surface modification of polymer objects
US5264161A (en) * 1991-09-05 1993-11-23 Bausch & Lomb Incorporated Method of using surfactants as contact lens processing aids
US5260001A (en) * 1992-08-03 1993-11-09 Bausch & Lomb Incorporated Spincasting process for producing a series of contact lenses having desired shapes
US5598233A (en) * 1994-08-18 1997-01-28 Harold A. Gell Soft contact lens with contamination indicator
US5849209A (en) * 1995-03-31 1998-12-15 Johnson & Johnson Vision Products, Inc. Mold material made with additives
US5690865A (en) * 1995-03-31 1997-11-25 Johnson & Johnson Vision Products, Inc. Mold material with additives
US5532289A (en) * 1995-04-14 1996-07-02 Benz Research And Development Corp. Contact lens having improved dimensional stability
US6011081A (en) 1995-04-14 2000-01-04 Benz Research And Development Corp. Contact lens having improved dimensional stability
US5849222A (en) * 1995-09-29 1998-12-15 Johnson & Johnson Vision Products, Inc. Method for reducing lens hole defects in production of contact lens blanks
US5674557A (en) * 1995-09-29 1997-10-07 Johnson & Johnson Vision Products, Inc. Method for transiently wetting lens molds in production of contact lens blanks to reduce lens hole defects
GB9624451D0 (en) * 1996-11-25 1997-01-15 Hydron Ltd A process
GB0005781D0 (en) * 2000-03-11 2000-05-03 Ineos Acrylics Uk Ltd Acrylic moulded articles
US20040075039A1 (en) * 2002-08-16 2004-04-22 Dubey Dharmesh K. Molds for producing contact lenses
WO2004048585A2 (fr) * 2002-11-22 2004-06-10 Basf Aktiengesellschaft Synthese enzymatique d'acrylates de polyol
US6955658B2 (en) * 2003-01-23 2005-10-18 Medtronic Vascular, Inc. Mold for forming a medical balloon
US20050070661A1 (en) * 2003-09-30 2005-03-31 Frank Molock Methods of preparing ophthalmic devices
US20070037897A1 (en) 2005-08-12 2007-02-15 Guigui Wang Method for making contact lenses
US7780879B2 (en) 2007-12-20 2010-08-24 Novartis Ag Method for making contact lenses
CN102159371B (zh) * 2008-09-24 2013-09-04 诺瓦提斯公司 铸塑成型隐形眼镜的方法
NZ592674A (en) * 2008-12-18 2012-08-31 Novartis Ag Method for making silicone hydrogel contact lenses
JP5604154B2 (ja) 2010-04-02 2014-10-08 株式会社メニコン ポリマー材料、眼用レンズ及びコンタクトレンズ
US9623614B2 (en) 2010-11-10 2017-04-18 Novartis Ag Method for making contact lenses
SG190057A1 (en) 2010-12-01 2013-06-28 Novartis Ag Atmospheric plasma coating for ophthalmic devices
US9358735B2 (en) 2011-11-29 2016-06-07 Novartis Ag Method of treating a lens forming surface of at least one mold half of a mold for molding ophthalmic lenses
HUE040618T2 (hu) 2013-10-31 2019-03-28 Novartis Ag Eljárás szemészeti lencsék elõállítására
WO2015089285A1 (fr) 2013-12-13 2015-06-18 Novartis Ag Procédé de fabrication de lentilles de contact
EP4146461B1 (fr) 2020-05-07 2024-03-13 Alcon Inc. Procédé de production de lentilles de contact en hydrogel de silicone

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542386A (en) * 1947-12-03 1951-02-20 John O Beattie Manufacture of plastic lenses from monomeric materials
US3171869A (en) * 1959-12-07 1965-03-02 Bausch & Lomb Process for manufacturing curved optical articles
US3944637A (en) * 1974-02-11 1976-03-16 Buckbee-Mears Company Increasing the yield of cast plastic lenses
GB1478455A (en) * 1974-06-06 1977-06-29 Nat Res Dev Hydrophilic plastic materials
US4146696A (en) * 1976-08-11 1979-03-27 Buckbee-Mears Company Industrial production of cast plastic lenses
US4468184A (en) * 1983-05-02 1984-08-28 International Hydron Corporation Gas feed means for use in centrifugal casting devices

Also Published As

Publication number Publication date
GB8411344D0 (en) 1984-06-06
CA1231215A (fr) 1988-01-12
CS600983A1 (en) 1985-05-15
GB2145028A (en) 1985-03-20
US4534916A (en) 1985-08-13
GB2145028B (en) 1986-07-23

Similar Documents

Publication Publication Date Title
CS239282B1 (en) Preparation method of objects made from hydrophilic gelsnamely contact lences by polymer casting
JP2874794B2 (ja) 親水性コンタクトレンズの製造方法
US3700761A (en) Fabrication of soft plastic contact lens blank
US4424311A (en) Antithrombogenic biomedical material
US3792028A (en) Hydrophilic gel polymers of vinyl pyrrolidone and hydroxyl alkyl methacrylate
US3983083A (en) Soft contact lenses and process for preparation thereof
EP0765721B1 (fr) Moule pour la Fabrication des Lentilles de Contact
US4018853A (en) Crosslinked, hydrophilic rods of pyrrolidone-methacrylate graft copolymers
US20100300902A1 (en) Hydrogel contact lenses and package systems and production methods for same
JPH09511000A (ja) コンタクトレンズの超臨界流体での処理
US5480953A (en) Hydrophilic material and semipermeable membrane made therefrom
US4045547A (en) Fabrication of soft contact lens and composition therefor
JPH04227643A (ja) ソフトコンタクトレンズの水和方法
US4430458A (en) Hydrogel-forming polymeric materials
US4687816A (en) Surface treatment of soft contact lenses
US3947401A (en) Hydrogels of unsaturated ester copolymers
US3978164A (en) Pyrrolidone-methacrylate graft copolymers from 3-stage polymerization process
US3816571A (en) Fabrication of soft plastic lens
EP0137686B1 (fr) Mélanges de polymères à haute absorption d'eau
CS243055B1 (en) Contact lenses production equipment
US5482981A (en) Optically clear polymer compositions containing an interpenetrant
US4535138A (en) Silane ester contact lens composition, article and method of manufacture
US3829329A (en) Method of cleaning a soft hydrophilic contact lens
US4035330A (en) Hydrophilic copolymer of N,N-di(C1 -C2 alkyl)acrylamide cross-linked with a glycidyl ester
US3822196A (en) Fabrication of soft plastic contact lens blank and composition therefor