DE2740545C2 - Verfahren zum Gießen von Polymerenstäben - Google Patents

Verfahren zum Gießen von Polymerenstäben

Info

Publication number
DE2740545C2
DE2740545C2 DE2740545A DE2740545A DE2740545C2 DE 2740545 C2 DE2740545 C2 DE 2740545C2 DE 2740545 A DE2740545 A DE 2740545A DE 2740545 A DE2740545 A DE 2740545A DE 2740545 C2 DE2740545 C2 DE 2740545C2
Authority
DE
Germany
Prior art keywords
weight
parts
vinylpyrrolidone
mixture
tube
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE2740545A
Other languages
German (de)
English (en)
Other versions
DE2740545A1 (de
Inventor
Patricia M. Dudley Mass. Cuffee
Albert R. Sturbridge Mass. LeBoeuf
Edwar A. Southbridge Mass. Travnicek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
AO Inc., Southbridge, Mass.
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 AO Inc., Southbridge, Mass. filed Critical AO Inc., Southbridge, Mass.
Publication of DE2740545A1 publication Critical patent/DE2740545A1/de
Application granted granted Critical
Publication of DE2740545C2 publication Critical patent/DE2740545C2/de
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/003—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor characterised by the choice of material
    • B29C39/006—Monomers or prepolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING 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
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING 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
    • B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING 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
    • B29K2827/00—Use of polyvinylhalogenides or derivatives thereof as mould material
    • B29K2827/12—Use of polyvinylhalogenides or derivatives thereof as mould material containing fluorine
    • B29K2827/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/06—Rods, e.g. connecting rods, rails, stakes

Landscapes

  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Polymerisation Methods In General (AREA)
  • Eyeglasses (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)
DE2740545A 1976-09-13 1977-09-06 Verfahren zum Gießen von Polymerenstäben Expired DE2740545C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/722,960 US4127638A (en) 1976-09-13 1976-09-13 Process for casting polymer rods

Publications (2)

Publication Number Publication Date
DE2740545A1 DE2740545A1 (de) 1978-03-16
DE2740545C2 true DE2740545C2 (de) 1987-05-07

Family

ID=24904186

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2740545A Expired DE2740545C2 (de) 1976-09-13 1977-09-06 Verfahren zum Gießen von Polymerenstäben

Country Status (5)

Country Link
US (1) US4127638A (enExample)
JP (1) JPS5335764A (enExample)
DE (1) DE2740545C2 (enExample)
FR (1) FR2364109A1 (enExample)
GB (1) GB1549543A (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045209B2 (ja) * 1976-07-20 1985-10-08 住友化学工業株式会社 連続重合方法
AU538943B2 (en) * 1979-01-22 1984-09-06 Mobil Oil Corp. Converting s and n containing organic charge with zsm-20 catalyst
JPS5921367B2 (ja) * 1979-05-29 1984-05-19 大同特殊鋼株式会社 含クロム鋼の精錬方法
US4931228A (en) * 1989-04-05 1990-06-05 Coastvision Method of manufacturing soft contact lens buttons
JP4855650B2 (ja) * 2004-04-16 2012-01-18 第一工業製薬株式会社 ビニルピロリドン重合体の製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1513299A (fr) * 1966-09-02 1968-02-16 Verreries De Goetzenbruck S A Procédé de fabrication d'écrans ou d'oculaires composites en matière organique
US3621079A (en) * 1968-10-21 1971-11-16 Patent Structures Inc Graft of hydroxyalkyl methacrylate onto polyvinylpyrrolidone
US3639524A (en) * 1969-07-28 1972-02-01 Maurice Seiderman Hydrophilic gel polymer insoluble in water from polyvinylpyrrolidone with n-vinyl-2-pyrrolidone and methacrylic modifier
BE759530A (fr) * 1969-11-28 1971-04-30 Griffin Lab Inc Lentille de contact et son procede de fabrication
US3839304A (en) * 1973-02-12 1974-10-01 American Optical Corp Soft contact lens and method of production thereof
US3894129A (en) * 1973-03-15 1975-07-08 American Optical Corp Method of manufacture of strain free contact lenses
US3978164A (en) * 1974-11-21 1976-08-31 Warner-Lambert Company Pyrrolidone-methacrylate graft copolymers from 3-stage polymerization process

Also Published As

Publication number Publication date
US4127638A (en) 1978-11-28
GB1549543A (en) 1979-08-08
FR2364109B1 (enExample) 1980-05-16
FR2364109A1 (fr) 1978-04-07
JPS5335764A (en) 1978-04-03
DE2740545A1 (de) 1978-03-16
JPS6159890B2 (enExample) 1986-12-18

Similar Documents

Publication Publication Date Title
DE2760153C2 (de) Verfahren zur Herstellung von Kontaktlinsen
DE2751215C2 (enExample)
DE69507500T2 (de) Verfahren zur behandlung von kunststoffgiessformen
DE3040221A1 (de) Verfahren zur herstellung von nachgehaerteten glaesernbzw. linsen und glaeser bzw. linsen, hergestellt aus teilweise gehaerteten kunststoffen
DE3752077T2 (de) Verfahren und Vorrichtung zur Herstellung einer Hochtemperatur-Kunststofflichtleitfaser
DE68923660T2 (de) Kontaktlinse, Materialien dafür und Verfahren zur Herstellung.
DE2739491A1 (de) Verbessertes material fuer das herstellen kuenstlicher intraokularer linsen und harter kontaktlinsen, sowie verfahren zum herstellen desselben
DE1952514C3 (de) Vinylpyrrolidon-Polymerisate, Verfahren zu ihrer Herstellung und Verwendung derselben
DE2548061C2 (enExample)
DE2820809A1 (de) Verfahren und vorrichtung zum giessen einer linse aus fluessigem kunststoff
DE3426340A1 (de) Verfahren zur bildung optischer linsen mit kratzfestem belag und durch das verfahren erhaltene linsen
CH638900A5 (de) Kontaktlinse von konkav-konvexer gestalt und verfahren zur herstellung derselben.
DE2707808A1 (de) Weichkontaktlinse und verfahren zu ihrer herstellung
DE2353086A1 (de) Verfahren zur herstellung eines lichtleitenden elementes aus einem synthetischen harz
DE2748898C2 (de) Vernetzte Polymerzusammensetzung, Verfahren zur Herstellung derartiger Polymerzusammensetzungen und deren Verwendung
DE2639259A1 (de) Vorrichtung zum ausformen optischer elemente aus glas
DE2740545C2 (de) Verfahren zum Gießen von Polymerenstäben
DE2411895A1 (de) Verfahren zum herstellen eines spannungsfreien hydroskopischen festen polymerisats fuer haftglaeser
DE2643061C3 (de) Verfahren zur Verhinderung einer Minderung der Schlagfestigkeit von chemisch vorverfestigten, endbearbeiteten Brillenglas-Rohlingen
DE2312934B2 (de) Verfahren und Vorrichtung zur Herstellung von Dentalprothesen aus Kunststoff
DE2001704B2 (de) Anwendung des verfahrens zur aenderung des optischen brechwertes von glaesern durch einwirkung von korpuskular- oder elektromagnetischen strahlen auf die herstellung von korrekturglaesern sowie auf diese weise hergestellte korrekturglaeser
DE69008798T2 (de) Verfahren zur Herstellung von Gerten aus Verbundpolymer, die zur Herstellung von einstückigen Intraokularlinsen mit gefärbten Haltebügeln benutzt werden.
DE3642138A1 (de) Verfahren zur herstellung von kratzfest beschichteter kunststofformkoerper
DE3625180A1 (de) Optische faser aus harz
DE1946443B2 (de) Verfahren zur Herstellung eines Lichtleiters

Legal Events

Date Code Title Description
8128 New person/name/address of the agent

Representative=s name: DIEHL, H., DIPL.-PHYS. DR.RER.NAT., PAT.-ANW., 800

8127 New person/name/address of the applicant

Owner name: AO INC., 07950 SOUTHBRIDGE, MASS., US

8128 New person/name/address of the agent

Representative=s name: DIEHL, H., DIPL.-PHYS. DR.RER.NAT. KRESSIN, H., DI

8110 Request for examination paragraph 44
8128 New person/name/address of the agent

Representative=s name: DIEHL, H., DIPL.-PHYS. DR.RER.NAT., PAT.-ANW., 800

D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: CIBA-GEIGY AG, BASEL, CH

8328 Change in the person/name/address of the agent

Free format text: DIEHL, H., DIPL.-PHYS. DR.RER.NAT., 8000 MUENCHEN GLAESER, J., DIPL.-ING., 2000 HAMBURG HILTL, E., DIPL.-CHEM. DR.RER.NAT. BURGER, E., DIPL.-ING., PAT.-ANWAELTE, 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee