NL186143C - LENS FOR OPTICAL EQUIPMENT. - Google Patents

LENS FOR OPTICAL EQUIPMENT.

Info

Publication number
NL186143C
NL186143C NLAANVRAGE7800292,A NL7800292A NL186143C NL 186143 C NL186143 C NL 186143C NL 7800292 A NL7800292 A NL 7800292A NL 186143 C NL186143 C NL 186143C
Authority
NL
Netherlands
Prior art keywords
lens
optical equipment
optical
equipment
Prior art date
Application number
NLAANVRAGE7800292,A
Other languages
Dutch (nl)
Other versions
NL186143B (en
NL7800292A (en
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Publication of NL7800292A publication Critical patent/NL7800292A/en
Publication of NL186143B publication Critical patent/NL186143B/en
Application granted granted Critical
Publication of NL186143C publication Critical patent/NL186143C/en

Links

Classifications

    • 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
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/04—Aromatic polycarbonates
    • C08G64/06—Aromatic polycarbonates not containing aliphatic unsaturation
    • 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
NLAANVRAGE7800292,A 1977-01-13 1978-01-10 LENS FOR OPTICAL EQUIPMENT. NL186143C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2701173A DE2701173C2 (en) 1977-01-13 1977-01-13 Use of polycarbonates to manufacture lenses for photo and film cameras

Publications (3)

Publication Number Publication Date
NL7800292A NL7800292A (en) 1978-07-17
NL186143B NL186143B (en) 1990-05-01
NL186143C true NL186143C (en) 1990-10-01

Family

ID=5998590

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7800292,A NL186143C (en) 1977-01-13 1978-01-10 LENS FOR OPTICAL EQUIPMENT.

Country Status (6)

Country Link
JP (1) JPS5389752A (en)
DE (1) DE2701173C2 (en)
FR (1) FR2377267A1 (en)
GB (1) GB1592724A (en)
IT (1) IT1104626B (en)
NL (1) NL186143C (en)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5778419A (en) * 1977-09-06 1982-05-17 Mobay Chemical Corp Copolycarbonate
EP0084578A1 (en) * 1982-01-23 1983-08-03 Mobay Chemical Corporation Copolycarbonates having high melt flow rates
JPS58179224A (en) * 1982-03-18 1983-10-20 Konishiroku Photo Ind Co Ltd Optical resin composition and optical element
JPS59115333A (en) * 1982-12-22 1984-07-03 Toshiba Corp Production of polysulfide carbonate
GB2141556A (en) * 1983-06-14 1984-12-19 Pilkington Perkin Elmer Ltd Glass and plastics objective lens for low light level viewing apparatus
JPS617314A (en) * 1984-06-20 1986-01-14 Kureha Chem Ind Co Ltd Lens material having high refractive index
JPH0649750B2 (en) * 1984-08-24 1994-06-29 三菱化成株式会社 Injection molding material consisting of polycarbonate
JPH0662752B2 (en) * 1984-08-24 1994-08-17 三菱化成株式会社 Optical information material
JPH0792542B2 (en) * 1986-02-07 1995-10-09 ミノルタ株式会社 Triplet lens system after diaphragm
US4831110A (en) * 1986-12-19 1989-05-16 Daicel Chemical Industries, Ltd. Co-polycarbonate copolymer from 2,2-bis(4-hydroxy-3-tertiary butyl phenyl)propane and optical disk
US5486949A (en) 1989-06-20 1996-01-23 The Dow Chemical Company Birefringent interference polarizer
DE69212510T2 (en) * 1991-02-22 1997-01-23 Mitsubishi Gas Chemical Co Polycarbonate resin solution for the production of cast films
DE69225819T2 (en) * 1991-02-22 1998-11-12 Mitsubishi Gas Chemical Co Polycarbonate resin solution for the production of cast films
DE69321591T2 (en) * 1992-07-16 1999-05-20 Dow Chemical Co THIODIPHENOL COPOLYCARBONATE AND THEIR USE AS A COMPONENT OF MULTI-LAYERED, REFLECTIVE PLASTIC ELEMENTS
US5532331A (en) * 1993-06-24 1996-07-02 The Dow Chemical Company Thiodiphenol copolycarbonates and their use as components of multilayered polymeric reflective bodies
US6500885B1 (en) 1997-02-28 2002-12-31 Candescent Technologies Corporation Polycarbonate-containing liquid chemical formulation and methods for making and using polycarbonate film
US6180698B1 (en) 1997-02-28 2001-01-30 Candescent Technologies Corporation Polycarbonate-containing liquid chemical formulation and method for making polycarbonate film
JP5308610B2 (en) 2000-05-12 2013-10-09 バイエル アクチェンゲゼルシャフト Antistatic agent
JP2002114842A (en) * 2000-10-06 2002-04-16 Mitsui Chemicals Inc Polycarbonate resin and optical part composed by including the same
JP2002114841A (en) * 2000-10-06 2002-04-16 Mitsui Chemicals Inc Optical part
DE102004022673A1 (en) 2004-05-07 2005-11-24 Bayer Materialscience Ag Copolycarbonates with improved flowability
DE102007015948A1 (en) 2007-04-03 2008-10-09 Bayer Materialscience Ag Modified polycarbonates, polyester carbonates and polyesters with improved extensibility and flame retardancy
DE102007040925A1 (en) 2007-08-30 2009-03-05 Bayer Materialscience Ag Thermoplastic compositions with low haze
DE102008008842A1 (en) 2008-02-13 2009-08-27 Bayer Materialscience Ag Alkylphenol for molecular weight adjustment and polycarbonate compositions having improved properties
EP2090605B1 (en) 2008-02-13 2011-07-13 Bayer MaterialScience AG Method for making polycarbonates
DE102008008841A1 (en) 2008-02-13 2009-08-20 Bayer Materialscience Ag Preparing (co)polycarbonate or diaryl carbonate, useful in e.g. sunglasses, comprises converting di-, mono-phenol and phosgene to chloroformic acid aryl ester, oligo- or diaryl-carbonate, and reacting the product under alkaline solution
DE102008011903A1 (en) 2008-02-29 2009-09-03 Bayer Materialscience Ag Polycarbonates with cyclic oligomers and improved flow behavior
DE102008012613A1 (en) 2008-03-05 2009-09-10 Bayer Materialscience Ag Process for the preparation of polycarbonate by the interfacial process
DE102008019503A1 (en) 2008-04-18 2009-10-22 Bayer Materialscience Ag Polycarbonates with rearrangement structures, cyclic and linear oligomers and improved flow behavior
DE102008023800A1 (en) 2008-05-15 2009-11-19 Bayer Materialscience Ag Alkyl phenol for molecular weight adjustment and copolycarbonate with improved properties
DE102008036406A1 (en) 2008-08-05 2010-02-11 Bayer Materialscience Ag Modified polycarbonates with improved surface properties
DE102008059658A1 (en) 2008-11-28 2010-06-02 Bayer Materialscience Ag Copolycarbonates with improved surface hardness
US8064140B2 (en) 2008-12-31 2011-11-22 Sabic Innovative Plastics Ip B.V. Transparent articles prepared from thermoplastic compositions having low birefringence
US7848025B2 (en) * 2008-12-31 2010-12-07 Sabic Innovative Plastics Ip B.V. Transparent articles prepared from thermoplastic compositions having high flow and ductility, and method of preparing articles
DE102009013643A1 (en) 2009-03-18 2010-09-30 Bayer Materialscience Ag Copolycarbonates with improved properties
DE102009015040A1 (en) 2009-03-26 2010-09-30 Bayer Materialscience Ag (Co) polycarbonates with improved optical properties
DE102009058099A1 (en) 2009-12-12 2011-06-16 Bayer Materialscience Ag Polycarbonate blends with high heat resistance and improved surface properties
EP2336245A1 (en) 2009-12-12 2011-06-22 Bayer MaterialScience AG Polycarbonate compounds with improved surface hardness
DE102009058462A1 (en) 2009-12-16 2011-06-22 Bayer MaterialScience AG, 51373 Producing polycarbonate injection molded body comprises introducing injection molded bodies containing polycarbonate in reactor, inerting atmosphere of reactor, introducing fluorine-inert gas mixture and evacuating and flushing the reactor
KR102307698B1 (en) 2014-01-24 2021-10-06 코베스트로 도이칠란트 아게 Method for producing polycarbonate according to the phase interface method
JP6860806B2 (en) * 2016-05-27 2021-04-21 三菱瓦斯化学株式会社 Polycarbonate resin for optics
CN109642010B (en) 2016-08-19 2021-06-04 科思创德国股份有限公司 Synthesis method of polyoxazolidone compound
EP3357949A1 (en) 2017-02-02 2018-08-08 Covestro Deutschland AG Method for the production of polyoxazolidinone polymer compounds
EP3985047A1 (en) 2020-10-13 2022-04-20 Covestro Deutschland AG Method for the preparation of a polycarbonate based on the interfacial process with solvent exchange

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL282025A (en) * 1955-04-14
US3250744A (en) * 1956-10-19 1966-05-10 Bayer Ag High molecular weight thermoplastic polycarbonates and process for the production thereof
US4043980A (en) * 1976-05-18 1977-08-23 Mobay Chemical Corporation Flame retardant polycarbonate having improved critical thickness

Also Published As

Publication number Publication date
IT7847588A0 (en) 1978-01-11
FR2377267B1 (en) 1983-07-01
IT1104626B (en) 1985-10-21
DE2701173A1 (en) 1978-07-20
NL186143B (en) 1990-05-01
FR2377267A1 (en) 1978-08-11
GB1592724A (en) 1981-07-08
DE2701173C2 (en) 1983-02-10
NL7800292A (en) 1978-07-17
JPS5389752A (en) 1978-08-07

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Legal Events

Date Code Title Description
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V1 Lapsed because of non-payment of the annual fee