GB1337135A - Cellulose acetate film - Google Patents

Cellulose acetate film

Info

Publication number
GB1337135A
GB1337135A GB30971A GB30971A GB1337135A GB 1337135 A GB1337135 A GB 1337135A GB 30971 A GB30971 A GB 30971A GB 30971 A GB30971 A GB 30971A GB 1337135 A GB1337135 A GB 1337135A
Authority
GB
United Kingdom
Prior art keywords
film
thickness
inch
jan
intrinsic viscosity
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
GB30971A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1337135A publication Critical patent/GB1337135A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/76Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/795Photosensitive materials characterised by the base or auxiliary layers the base being of macromolecular substances

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

1337135 Cellulose acetate film EASTMAN KODAK CO 4 Jan 1971 [2 Jan 1970(3) 3 April 1970(2)] 309/71 Heading B5B Methods of making cellulose triacetate film containing not more than 1 weight per cent hydroxyl groups, at least 41 weight per cent acetyl groups expressed as acetic acid and intrinsic viscosity of at least one determined as hereinafter defined, at least 10% crystalline, the crystallinity being uniformly dispersed through the thickness of the film, having not more than 3% haze measured through the thickness of the film, containing not more than 5% by weight of plasticiser, having a thickness of 0À0005 to 0À030 inch (preferably 0À003 to 0À010 inch), having a shrinkage of not more than 0À5% when subjected to a specifically defined "Hot Plate" test and free of visible distortion are disclosed. In the first method essentially amorphous cellulose triacetate film of the same composition is heated to 230‹ to 270‹ C. for from 15 to 65 secs. and then rapidly cooled to below 210‹ C. while held under a lengthwise tension of at most 0À035 pounds per inch during the heating period. In the other method the essentially amorphous film is gradually heated through the temperature range 180‹ to 220‹ C. over a period of at least five minutes (and preferably no longer than 30 mins. to avoid excessive discolouration of the film) and while free of perimeter restraint. The intrinsic viscosity is measured at 25‹ C. Œ0À1‹ C. in a 90 : 10, by volume, mixture of methylene chloride and methanol.
GB30971A 1970-01-02 1971-01-04 Cellulose acetate film Expired GB1337135A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US44070A 1970-01-02 1970-01-02
US44170A 1970-01-02 1970-01-02
US43970A 1970-01-02 1970-01-02
US2557170A 1970-04-03 1970-04-03
US2556870A 1970-04-03 1970-04-03

Publications (1)

Publication Number Publication Date
GB1337135A true GB1337135A (en) 1973-11-14

Family

ID=27532875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30971A Expired GB1337135A (en) 1970-01-02 1971-01-04 Cellulose acetate film

Country Status (3)

Country Link
BE (1) BE760801A (en)
FR (1) FR2075076A5 (en)
GB (1) GB1337135A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3980636B2 (en) 1994-11-16 2007-09-26 イーストマン コダック カンパニー Photothermographic components with reduced grain interference pattern

Also Published As

Publication number Publication date
FR2075076A5 (en) 1971-10-08
BE760801A (en) 1971-05-27

Similar Documents

Publication Publication Date Title
US3243308A (en) Amylosic films and method of making the same
GB1085218A (en) Method of manufacturing films of saponified ethylene-vinyl acetate copolymers
GB1337135A (en) Cellulose acetate film
US3608059A (en) Heat-relaxing cellulose triacetate film slowly through the range 180 degree centigrade -220 degree centigrade
US2362182A (en) Manufacture of cellulose acetate solutions
US1826699A (en) Method of preparing moisturproof materials
US2811461A (en) Cellulose organic acid ester plastics containing resorcinol mono-meta-hydroxybenzoate
US2241251A (en) Process for coloring plastic materials
US2848341A (en) Cellulose organic acid ester plastics containing symmetrical diphenyl urea
US2811460A (en) Cellulose organic acid ester plastics containing meta-methoxyphenyl p-hydroxybenzoate
US2831777A (en) Cellulose organic acid ester plastics containing n-benzoyl p-hydroxy anilide
US2708638A (en) Cellulose lower alkanoates stabilized with resorcinol mono-piperonylate
US2412611A (en) Molding compositions and articles thereof
US2542402A (en) Solutions of cellulose triacetate
DE1569201C3 (en) Use of polyglutamates to lower the embrittlement temperature and to increase the flexibility of polyvinyl chlorides and / or acetates
US2716071A (en) Cellulose organic acid ester plastics containing mono-tertiary-butyl hydroquinone mono-salicylate
US3705148A (en) Photographic films on heat resistant cellulose triacetate
SU707938A1 (en) Composition for phonograph records
US2839418A (en) Cellulose organic acid ester plastics containing hydroquinone monosalicylate
US3718728A (en) Process for heat stabilizing cellulose triacetate films or sheets
US3304190A (en) Plasticized partially esterified regenerated cellulose film
US2029925A (en) Cellulose organic ester compositions containing a propionyl ester of glycerol
US1991109A (en) Cellulose ester molding composition containing a diacyl derivative of 1:4-dioxane
US1402969A (en) Plastic composition
US2617739A (en) Plasticized and stabilized lower fatty acid ester of cellulose

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee