US1904221A - Protective layer on photographic films - Google Patents

Protective layer on photographic films Download PDF

Info

Publication number
US1904221A
US1904221A US186567A US18656727A US1904221A US 1904221 A US1904221 A US 1904221A US 186567 A US186567 A US 186567A US 18656727 A US18656727 A US 18656727A US 1904221 A US1904221 A US 1904221A
Authority
US
United States
Prior art keywords
protective layer
cellulose
film
layer
photographic films
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 - Lifetime
Application number
US186567A
Other languages
English (en)
Inventor
Hagedorn Max
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.)
GAF Chemicals Corp
Original Assignee
Agfa Ansco Corp
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 Agfa Ansco Corp filed Critical Agfa Ansco Corp
Application granted granted Critical
Publication of US1904221A publication Critical patent/US1904221A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/85—Photosensitive materials characterised by the base or auxiliary layers characterised by antistatic additives or coatings
    • G03C1/89—Macromolecular substances therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/7614—Cover layers; Backing layers; Base or auxiliary layers characterised by means for lubricating, for rendering anti-abrasive or for preventing adhesion

Definitions

  • the layer has been made up of advantageously mixed substances which are more or less foreign to the emulsion carrier.
  • the present invention consists of a protective layer made of cellulose derivatives other than nitroacetate soluble in organic solvents and containing several different radicles as substituents, particularl radicles of more than one acid or esides other groups radicles of acids.
  • a protective layer made of cellulose derivatives other than nitroacetate soluble in organic solvents and containing several different radicles as substituents, particularl radicles of more than one acid or esides other groups radicles of acids.
  • Such compounds maybe obtained from cellulose derivates having still esterifiable hydroxyl groups, particularly from mono-esters, diesters, mono-ethers, di-ethers or mixtures of ample, if a film having a high capacity for sliding and small shrinkage is required there may be used cellulose-acetate-stearate as protective layer.
  • the same effect has a protective layer made from cellulose-ethyl-etherstearate. When protection against electric discharges is in question the layer may consist of
  • Ewamgvle 1.60 grams of cellulose-acetatephosphate are dissolved in 3750 cc. of acetone and 1600 cc. of water, with addition of 300 cc. of glycol mono methyl ether acetate.
  • the layer produced by applying this solution in the known manner to the back surface of the film imparts good protection against electric discharge.
  • Example 2 Form producing a protective layer on the back surface of the film there is used a 1 per cent solution of cellulose-ethylether-stearate or cellulose-acetate-stearate in a mixture of 1 part of alcohol, 3 parts of henzene and 2 parts of acetone. This layer greatly diminishes the resistance of the film to sliding in the cinematograph apparatus.
  • the aforesaid solutions may contain still other additions remaining in the dry layer.
  • a photographic with a protective Beyer on its beck surfece, said! layer comprism ing schariulose derivative of the group (203' sisting of eeiiuiose mixed esters of two faity eeiais, cellulose mixeoi esters of one fetiy acid and phosphoric acid, eeiiulose ether esters of fetty eoids, em? cellulose ether esfivers ofi 25 phosphoric eeidl.

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Laminated Bodies (AREA)
  • Polarising Elements (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
US186567A 1926-05-01 1927-04-25 Protective layer on photographic films Expired - Lifetime US1904221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE270347X 1926-05-01

Publications (1)

Publication Number Publication Date
US1904221A true US1904221A (en) 1933-04-18

Family

ID=5999758

Family Applications (1)

Application Number Title Priority Date Filing Date
US186567A Expired - Lifetime US1904221A (en) 1926-05-01 1927-04-25 Protective layer on photographic films

Country Status (4)

Country Link
US (1) US1904221A (en, 2012)
BE (1) BE341758A (en, 2012)
FR (1) FR635281A (en, 2012)
GB (1) GB270347A (en, 2012)

Also Published As

Publication number Publication date
GB270347A (en) 1927-09-29
FR635281A (fr) 1928-03-12
BE341758A (en, 2012)

Similar Documents

Publication Publication Date Title
US2346090A (en) Photographic bleach-out layer
US2074647A (en) Manufacture of foils and artificial products
US1904221A (en) Protective layer on photographic films
US1627935A (en) Laminated film which includes alpha layer of polymerized vinyl chloride
US2126305A (en) Dispersion of gelatin
DE2357408A1 (de) Lichtempfindliches, photographisches silberhalogenid-aufzeichnungsmaterial
US2860980A (en) Plasticization of gelatin with dialkoxypolyoxyalkylene glycols
US3183092A (en) Photographic stripping film
GB701281A (en) Improvements in the identification of photographic materials
US2614932A (en) Photographic stripping film
US3640721A (en) Gelatinous photographic coating composition
US2649375A (en) Light-sensitive photographic element
US1973476A (en) Photographic stripping film
US2346078A (en) Antihalation protective layer
US1570077A (en) Nonstatic photographic film
DE1153890B (de) Weichmachungsmittel fuer Cellulosederivate
US1432366A (en) Albert f
US2461476A (en) Gelatin subbing compositions containing lactones or hydroxy lactones
US1434453A (en) op rochester
US2335944A (en) Protective and auxiliary layers of all kinds for photographic material
US2326057A (en) Antihalation film
US1432368A (en) Photographic film
US2268651A (en) Adhesive lacquer
US1548951A (en) Protected photographic film
US2000622A (en) Cellulose acetate composition comprising a tertiary alcohol