UST969004I4 - Light-absorbing filters - Google Patents

Light-absorbing filters Download PDF

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Publication number
UST969004I4
UST969004I4 US05/792,502 US79250277A UST969004I4 US T969004 I4 UST969004 I4 US T969004I4 US 79250277 A US79250277 A US 79250277A US T969004 I4 UST969004 I4 US T969004I4
Authority
US
United States
Prior art keywords
light
filters
absorbing
hydroxy
absorbing filters
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.)
Pending
Application number
US05/792,502
Inventor
Bruce Martin Watkiss
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of UST969004I4 publication Critical patent/UST969004I4/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/32—Radiation-absorbing paints

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Optical Filters (AREA)

Abstract

light-absorbing filters comprise a self-supporting polymeric film, such as an oriented polyethylene terephthalate film, containing or coated with a lacquer containing a compound which absorbs light in the wavelength band less than 0.4 μm (i.e. UV light). The filters are particularly useful as UV-absorbing filters for use in flashbulbs for color photography. Suitable light-absorbing compounds are hydroxyphenyl benzotriazoles, e.g. 2(2'-hydroxy-3',5'-di-t-amylphenyl)benzotriazole, and hydroxy-substituted benzophenone, e.g. 2,2'-dihydroxy-4,4'-dimethoxy-benzophenone.
US05/792,502 1976-05-10 1977-05-02 Light-absorbing filters Pending UST969004I4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1910576 1976-05-10
UK19105/76 1976-05-10

Publications (1)

Publication Number Publication Date
UST969004I4 true UST969004I4 (en) 1978-04-04

Family

ID=10123876

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/792,502 Pending UST969004I4 (en) 1976-05-10 1977-05-02 Light-absorbing filters

Country Status (1)

Country Link
US (1) UST969004I4 (en)

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