GB514715A - Sheeting adapted for use as photographic film base and solutions for the manufacture thereof - Google Patents

Sheeting adapted for use as photographic film base and solutions for the manufacture thereof

Info

Publication number
GB514715A
GB514715A GB14429/38A GB1442938A GB514715A GB 514715 A GB514715 A GB 514715A GB 14429/38 A GB14429/38 A GB 14429/38A GB 1442938 A GB1442938 A GB 1442938A GB 514715 A GB514715 A GB 514715A
Authority
GB
United Kingdom
Prior art keywords
film
cellosolve
methyl
filmforming
solution
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
GB14429/38A
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB514715A publication Critical patent/GB514715A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/16—Esters of inorganic acids
    • C08L1/18—Cellulose nitrate, i.e. nitrocellulose
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • C08J2301/16—Esters of inorganic acids
    • C08J2301/18—Cellulose nitrate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

514,715. Cellulose nitrate film. KODAK, Ltd. May 14, 1938, No. 14429. Convention date, May 18, 1937. [Class 2 (ii)] Sheeting adapted for use as photographic film base is made by depositing in the form of a film on a film-forming surface a solution having a composition falling within the area under curve A in Fig. 1 of the drawings and consisting of cellulose nitrate dissolved in a mixture of methyl alcohol and one or more co-solvents, coagulating the solution in presence of steam, removing the film from the filmforming surface while still containing a large amount of solvent and then curing out the residual solvent. Co-solvents mentioned are acetone, methyl ethyl ketone, diethyl ketone, ethylacetate, butylacetate, ethylether, methyl ethyl ether, isopropyl ether, dioxane, ethyl " Cellosolve " (Registered Trade Mark), methyl " Cellosolve," dimethyl " Cellosolve," and methyl " Cellosolve" acetate. The filmforming composition may also contain butyl alcohol and plasticizers such as triphenyl phosphate and camphor. In Fig. 2, the filmforming solution is led from a hopper 9 on to the rotating casting wheel 2. Air entering through filter 12 is charged with steam by means of jet 13, and after passing through heater 14, is led through the wheel casing 6. The coagulated film leaves the wheel at the stripping roll 15 and passes to a curing chamber.
GB14429/38A 1937-05-18 1938-05-14 Sheeting adapted for use as photographic film base and solutions for the manufacture thereof Expired GB514715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US143302A US2245429A (en) 1937-05-18 1937-05-18 Manufacture of photographic film base

Publications (1)

Publication Number Publication Date
GB514715A true GB514715A (en) 1939-11-15

Family

ID=22503459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14429/38A Expired GB514715A (en) 1937-05-18 1938-05-14 Sheeting adapted for use as photographic film base and solutions for the manufacture thereof

Country Status (4)

Country Link
US (1) US2245429A (en)
DE (1) DE724836C (en)
FR (1) FR838071A (en)
GB (1) GB514715A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE818862C (en) * 1949-12-20 1951-10-29 Rudolf Dr Phil Koeppen Process for the production of membranes from cellulose ester
US2926104A (en) * 1955-06-27 1960-02-23 Goetz Alexander Method of making microporous filter film
DE1017596B (en) * 1956-07-04 1957-10-17 Membranfiltergesellschaft Sart Method and device for the continuous production of membrane filters
US4203847A (en) * 1977-05-25 1980-05-20 Millipore Corporation Making porous membranes and the membrane products
US4203848A (en) * 1977-05-25 1980-05-20 Millipore Corporation Processes of making a porous membrane material from polyvinylidene fluoride, and products
DE3750353T2 (en) * 1986-06-12 1994-12-08 Mitsui Petrochemical Ind Process for the production of cellulose ester films.
US5314647A (en) * 1992-07-20 1994-05-24 Eastman Kodak Company Method of making cellulose ester photographic film base
US6710259B2 (en) 1993-05-17 2004-03-23 Electrochemicals, Inc. Printed wiring boards and methods for making them

Also Published As

Publication number Publication date
FR838071A (en) 1939-02-27
US2245429A (en) 1941-06-10
DE724836C (en) 1942-09-08

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