EP0362823A2 - Papier für photographische Anwendungen - Google Patents

Papier für photographische Anwendungen Download PDF

Info

Publication number
EP0362823A2
EP0362823A2 EP89118412A EP89118412A EP0362823A2 EP 0362823 A2 EP0362823 A2 EP 0362823A2 EP 89118412 A EP89118412 A EP 89118412A EP 89118412 A EP89118412 A EP 89118412A EP 0362823 A2 EP0362823 A2 EP 0362823A2
Authority
EP
European Patent Office
Prior art keywords
paper
nonionic
silicone
antifoamer
pulp
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.)
Granted
Application number
EP89118412A
Other languages
English (en)
French (fr)
Other versions
EP0362823B1 (de
EP0362823A3 (en
Inventor
Mutsuo Akao
Koji Inoue
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co 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
Priority claimed from JP24896888A external-priority patent/JPH0296742A/ja
Priority claimed from JP63248967A external-priority patent/JP2598311B2/ja
Priority claimed from JP63248965A external-priority patent/JP2858010B2/ja
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of EP0362823A2 publication Critical patent/EP0362823A2/de
Publication of EP0362823A3 publication Critical patent/EP0362823A3/en
Application granted granted Critical
Publication of EP0362823B1 publication Critical patent/EP0362823B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/12—Defoamers
    • 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
    • G03C1/775—Photosensitive materials characterised by the base or auxiliary layers the base being of paper

Definitions

  • This invention relates to a paper for photograph, such as a packaging material for photographic photosensitive materials and a support for photographic paper.
  • unbleached kraft papers including specialty papers such as unbleached Clupak paper and unbleached Duostress paper are inferior in photographic properties irrespective of the pH of the papers, for example neutral papers having a pH measured by the cool water extracting method (JIS P-8133) in the range of 6.5-9. Accordingly, unbleached kraft paper cannot be used in the portion to touch photographic photosensitive materials directly, and for example, it is used as the outer sheet of a double sheet bag shown in Japanese Patent KOKAI No. 62-53829.
  • the photographic properties means the influence of a material upon a photographic material such as fogging, slippage in the sensitivity and decrease in the developed concentration, and good photographic properties affect a photographic material little.
  • the double sheet bag is expensive. Moreover, workability in a dark room is inferior, and the space between the outer sheet and the inner sheet is liable to be opened by hand instead of opening the inner sheet.
  • the unbleached kraft paper improved by adding a special additive or the like, the photographic properties are not sufficiently improved. While, bleached kraft paper is excellent in photographic properties, and can be used as a single sheet bag. However, it is expensive, and physical strength such as surface strength is insufficient.
  • An object of the invention is to provide a paper for photographic excellent in photographic properties, in physical strength and inexpensive.
  • the present invention provides a paper for photograph which has achieved the above object, and based upon the studies with respect to the influences of various additives upon photographic properties.
  • a sizing agent and a paper strongs agent are, in general, added in order to improve the surface strength and delamination resistance of a paper, and a water-soluble aluminum salt is further added in order to improve the retention of the sizing agent and the paper strongs agent. While, when the quantity of the water-soluble aluminum salt of was increased in order to make the improvement in the retention effectively, the manufactured paper was rendered acidic, and the photographic properties were worse.
  • the inventors investigated the influences of various sizing agents and paper strongs agents, and found that restricted sizing agents and paper strongs agents do not adversely affect the photographic properties in acidic conditions, though they adversely affect in neutral conditions. That is, rosin sizing agents and paper strongs agents of polyacrylamides and polyamide-­epoxy resins do not adversely affect photographic properties only in the range of pH 3.5 to 6.0.
  • the present invention provides a paper for photograph containing a nonionic antifoamer of which the components do not include silicone nor propylene oxide.
  • the present invention also provides a paper for photograph containing a nonionic mineral oil antifoamer of which the components include silicone or silicone-modified silica and having a pH of 3.5 to 5.5 measured by the cool water extracting method.
  • the present invention still also provides a paper for photograph which contains a water-soluble aluminum salt and at least one of rosin sizing agent, polyacrylamide or polyamide-epoxy resin and has a pH of 3.5 to 6.0 measured by the cool water extracting method.
  • the nonionic antifoamer includes mixtures of a nonionic surfactant and a fatty acid and/or a fatty acid compound such as a fatty acid amide, a fatty acid ester or a fatty acid metal salt, mixtures of a polyglycol and a fatty acid and/or a fatty acid compound such as a fatty acid amide, a fatty acid ester or a fatty acid metal salt, emulsifying pine oils, and nonionic fatty acids.
  • Preferable nonionic antifoamers are mixtures of a nonionic surfactant and a fatty acid compound, and particularly preferred nonionic antifoamers contain a mixture of a nonionic surfactant and a fatty acid amide as the principal component.
  • Polyoxyethylene sorbitan laurate is also particularly preferred.
  • Preferable nonionic surfactants contain halides of hydrocarbon or a mixture thereof as the principal component.
  • the silicones harmfull for photographic properties are diorganopolysiloxane, polyoxyalkylene-modified polysiloxane, dimethylpolysiloxane, dimethyldichlorosilane, diethylpolysiloxane, methylphenylpolysiloxane, polydimethyl­polydiphenylsiloxane copolymer, polymethyl-3,3,3-­trifluoropropylsiloxane, polydimethyl­chloropropylmethylsiloxane and the like.
  • Propylene oxide also called 1,2-epoxypropane is reactive, and it is miscible with water, ethanol and the like. When propylene oxide is heated with alumina, it produces propionaldehyde which adversely affects photographic photosensitive materials.
  • a suitable quantity of the anti former is about 10 to 1500 g/pulp ton in the pulp washer process, about 5 to 600 g/pulp ton in the pulp screening process and less than 1 % per pulp weight in the mixer process.
  • the nonionic mineral oil antifoamer contains silicone or silicone-modified silica and a nonionic surfactant.
  • the silicone may be selected from mentioned previously, and the silicone-modified silica is fine powder of silica treated with the silicone.
  • Particularly preferred nonionic mineral oil antifoamer is polyoxyalkylene-modified polysiloxane blended with dimethylpolysiloxane, silica and a nonionic surfactant in view of excellent foam-extinguishing ability and foam-breaking ability.
  • a suitable quantity of the nonionic mineral oil antifoamer is about 100 to 1000 g(stock solution)/pulp ton. When the quantity is less than 100 g/pulp ton, foam-extinguishing effect is insufficient. While, when the quantity is beyond 1000 g/pulp ton, photographic properties are adversely affected.
  • the pH measured by the cool water extracting method is adjusted to 3.5 to 5.5.
  • the pH is lower than 3.5, the increase of sensitivity is great. While, when the pH is higher than 5.5, the increase of sensitivity is also great.
  • the pH is adjusted by the quantity of additives such as aluminum sulfate.
  • An acid such as chloric acid, sulfuric acid, citric acid or oxalic acid, may be added, if necessary.
  • the water-soluble aluminum salt is added for fixing the sizing agent and the paper strongs agent on the fiber of pulp.
  • the water-soluble aluminum salt are aluminum sulfate, aluminum chloride, poly(aluminum chloride), poly(aluminum hydroxide), zinc chloride, stannous chloride and the like.
  • the quantity of the water-soluble aluminum salt is determined so that the pH measured by the cool water extracting method (JIS P-8133) of the paper for photograph becomes in the range of 3.5 to 6.0, and it is influenced by the pH of pulp, the quantity of various additives, the kind of the water-soluble aluminum salt and the like.
  • An usual quantity of the water-soluble aluminum salt is about 0.5 to 10 wt. %, preferably 1 to 6 wt. %, of the dry weight of pulp.
  • the rosin sizing agents are divided into three groups of gum rosin, tall oil rosin and wood rosin.
  • Maleic anhydride or fumaric anhydride is added to the rosin by heating to produce maleinzed rosin or fumaric-induced rosin, and an alkali is added to obtain a solution of fortified rosin sizing agent.
  • the maleinized rosin or fumaric-induced rosin is suspended in water with an emulsifier to obtain an emulsion-type rosin sizing agent.
  • Polyacrylamide acts a paper strongs agent, and exhibit additional effects such as the improvement in the fixation of fillers and fine fibers and the improvement in drainage ability.
  • a part of amide groups are changed to carboxyl groups.
  • the carboxyl group-induced polyacrylamide is fixed on the fiber of pulp through aluminum sulfate.
  • a suitable modification rate of polyacrylamide is that about 10 % of amide groups are changed to carboxyl groups.
  • Polyamide-epoxy resin is used as an non-formaldehyde resin, and it exhibits a high ability as a wet paper strongs agent.
  • the quantity of the rosin sizing agent, polyacrylamide and polyamide-epoxy resin is about 0.05 to 10 wt. %, preferably 0.2 to 5 wt. % of the dry weight of pulp.
  • the pH measured by the cool water extracting method is 3.5 to 6.0.
  • the pH is adjusted by the quantity of additives such as aluminum sulfate.
  • An acid such as chloric acid, sulfuric acid or oxalic acid, may be added, if necessary.
  • the water-soluble aluminum salt improves the retention of the sizing agent and the paper strongs agent, and adjust the pH within the range of 3.5 to 6.0.
  • the rosin sizing agent, polyacrylamide and polyamide-epoxy resin improves the surface strength.
  • the adjustment of the pH within the range of 3.5 to 6.0 renders the rosin sizing agent and the like harmless for the photographic properties.
  • the paper for photograph of the invention is used for packaging materials for photographic photosensitive materials, light-shielding paper, support for photograph, pad, carton box, core, guard sheet, leader paper, materials for composing instant photograph.
  • a preferable use of the paper of the invention is the inner surface layer of the laminated film formed in a single sheet bag to touch the emulsion face of the photosensitive materials.
  • a nonionic antifoamer containing a fatty amide and silicone as the principal components (“PRONAL K-302N", Toho Chemical Industries) was made water-soluble by removing silicone.
  • An unbleached kraft pulp was prepared wherein 500 g/pulp ton of the above nonionic antifoamer was added in the pulp washer process and 200 g/pulp ton of the same antifoamer was further added in the pulp screening process of the pulp washing process.
  • the unbleached kraft pulp was beaten up to a CPPA standards drainage rate of 450 ml to produce a pulp slurry.
  • To the pulp slurry was added polyacrylamide in an amount of 1.0 wt.
  • a handmade paper of pH 4.5 having an areal weight of 70 g/m2 was prepared from the above paper stock by using a TAPPI type handmaking machine.
  • This paper was the same as the product of the invention I, except that the amount of aluminum sulfate was 0.3 wt. % of the pulp and the pH was made 7.2.
  • An unbleached kraft paper of pit 4.3 was prepared in the same manner as the product of the invention I, except that 500 g/pulp ton of the nonionic antifoamer ("PRONAL K-302N") without the water-solubilization treatement was added in the pulp washer process of the pulp washing process instead of the water-soluble anti former obtained from "PRONAL K-302N” and 200 g/pulp ton of a nonionic antifoamer containing propylene oxide and ethylene oxide as the principal components (“PRONAL S-121", Toho Chemical Industries) was added in the process instead of 200 g/pulp ton of the water-soluble antifoamer.
  • PRONAL K-302N the nonionic antifoamer without the water-solubilization treatement
  • An unbleached kraft paper of pH 7.0 was prepared in the same manner as Comparative Example 1 before and in the pulp washer process, and in the same manner as Example II after the pulp washer process.
  • Table 1 Invention Comparative I II I II pH of Paper 4.5 7.2 4.3 7.0 Acidic Neutral Acidic Neutral Photographic Properties (Contact) Slippage in Sensitivity of Green Coloring Layer 0 0 +0.02 +0.02 Slippage in Sensitivity of Blue Coloring Layer +0.01 0 +0.04 +0.04 Slippage in Sensitivity of Red Coloring Layer 0 0 +0.03 +0.03 Surface Strength (Wax No.) 12A 10A 12A 10A
  • the emulsion face of a color photographic printing paper was contacted with the handmade paper, and kept at 50°C for 3 days without humidity conditioning. Then, each photographic printing paper was developed by a conventional manner, and each color concentration was measured by using a densitometer ("Fuji Densitometer", Fuji Photo Film). Each numerical value in the table is the difference from the case of the paper not added with the reagent.
  • the emulsion face of a color photographic printing paper was faced to the handmade paper through a perforated sheet, and kept at 50°C for 3 days without humidity conditioning. Then, each photographic printing paper was developed by a conventional manner, and each color concentration was measured by using a densitometer ("Fuji Densitometer", Fuji Photo Film). Each numerical value in the table is the difference from the case of he paper not added with the reagent.
  • An unbleached kraft pulp was beaten up to a CPPA standards drainage rate of 450 ml by a mill, and to the beaten pulp was added 0.3 wt. % of a rosin sizing agent (fortified rosin sizing agent), 2 wt. % of anionic polyacrylamide as the paper strongs agent and 3 wt. % of aluminum sulfate as the water-soluble aluminum salt.
  • a handmade paper of pH 4.5 (measured by the cool water extracting method of JIS P-8133) having an areal weight of 70 g/m2 was prepared from the above paper stock by using a TAPPI type handmaking machine.
  • This paper was a handmade paper of pH 7 measured by the cool water extracting method prepared in the same manner as the product of the invention IV, except that the amount of aluminum sulfate was changed to 1.5 wt. %.
  • a handmade paper of pH 7 measured by the cool water extracting method was prepared in the same manner as the product of the invention IV, except that the amount of aluminum sulfate was changed to 1.5 wt. % and that polyacrylamide was not added.
  • a handmade paper of pH 4.5 measured by the cool water extracting method was prepared in the same manner as the product of the invention IV, except that 2 wt. % of melamine resin was added instead of polyacrylamide.
  • a handmade paper of pH 4.7 (measured by the cool water extracting method) having an areal weight of 70 g/m2 was prepared in the same manner as the product of the invention IV, except that no rosin-sizing agent was added.
  • a handmade paper of pH 4.6 (measured by the cool water extracting method) was prepared in the same manner as the product of the invention V, except that 2 wt. % of modified starch ("PEPARIN", Matsutani Chemical Co., Ltd.) was used instead of polyacrylamide.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Paper (AREA)
EP19890118412 1988-10-04 1989-10-04 Papier für photographische Anwendungen Expired - Lifetime EP0362823B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP248968/88 1988-10-04
JP24896888A JPH0296742A (ja) 1988-10-04 1988-10-04 写真用紙
JP63248967A JP2598311B2 (ja) 1988-10-04 1988-10-04 写真用紙
JP248967/88 1988-10-04
JP63248965A JP2858010B2 (ja) 1988-10-04 1988-10-04 写真感光材料用一重包装袋
JP248965/88 1988-10-04

Publications (3)

Publication Number Publication Date
EP0362823A2 true EP0362823A2 (de) 1990-04-11
EP0362823A3 EP0362823A3 (en) 1990-10-31
EP0362823B1 EP0362823B1 (de) 1996-07-03

Family

ID=27333778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890118412 Expired - Lifetime EP0362823B1 (de) 1988-10-04 1989-10-04 Papier für photographische Anwendungen

Country Status (2)

Country Link
EP (1) EP0362823B1 (de)
DE (1) DE68926770T2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182161A (en) * 1990-07-10 1993-01-26 Mitsubishi Paper Mills Limited Support for photosensitive materials
EP0545043A1 (de) * 1991-11-29 1993-06-09 Felix Schoeller jr. Papierfabrik GmbH & Co. KG Basispapier für fotografische Schichtträger
EP0686570A3 (de) * 1994-06-10 1996-11-20 Fuji Photo Film Co Ltd Verpackungsmaterial und Verpackung für vorsensibilisierte Druckplatten

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3207698A (en) * 1963-02-13 1965-09-21 Nopco Chem Co Composition and method for defoaming aqueous systems
US3592731A (en) * 1968-10-24 1971-07-13 Eastman Kodak Co Photographic paper comprising a cationic amino aldehyde resin and a cationic polyamide-epichlorohydrin resin and an anionic polyacrylamide dry strength resin and method for its manufacture
US4107073A (en) * 1977-03-17 1978-08-15 Nalco Chemical Company Pulp and papermaking additive
US4340500A (en) * 1980-03-31 1982-07-20 Drew Chemical Corporation Liquid defoamer and process of use thereof
DE3505742C2 (de) * 1984-03-01 1995-12-14 Sandoz Ag Schaumhemmende Mittel, deren Herstellung und Verwendung
EP0213231B1 (de) * 1985-09-04 1989-05-03 Felix Schoeller jr Foto- und Spezialpapiere GmbH & Co. KG Wasserfester Papierträger für fotografische Schichten
DE3606806C1 (de) * 1986-03-03 1987-06-25 Schoeller F Jun Gmbh Co Kg Wasserfester fotografischer Papiertraeger
DE3668995D1 (de) * 1986-07-22 1990-03-15 Schoeller F Jun Gmbh Co Kg Fotografischer papiertraeger und verfahren zu seiner herstellung.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182161A (en) * 1990-07-10 1993-01-26 Mitsubishi Paper Mills Limited Support for photosensitive materials
EP0545043A1 (de) * 1991-11-29 1993-06-09 Felix Schoeller jr. Papierfabrik GmbH & Co. KG Basispapier für fotografische Schichtträger
EP0686570A3 (de) * 1994-06-10 1996-11-20 Fuji Photo Film Co Ltd Verpackungsmaterial und Verpackung für vorsensibilisierte Druckplatten

Also Published As

Publication number Publication date
DE68926770D1 (de) 1996-08-08
EP0362823B1 (de) 1996-07-03
EP0362823A3 (en) 1990-10-31
DE68926770T2 (de) 1996-10-31

Similar Documents

Publication Publication Date Title
FI95825B (fi) Liimausainekoostumus, sen valmistusmenetelmä ja käyttömenetelmä
EP0217959B1 (de) Papierherstellungsverfahren
USRE29960E (en) Method of sizing paper
EP0537682A1 (de) Kolophonium Emulsion als Leimungsmittel, damit geleimtes Papier und Verfahren zum Leimen damit
JP2001248100A (ja) 抄紙用紙質向上剤
US6033526A (en) Rosin sizing at neutral to alkaline pH
FI57993B (fi) Limblandning avsedd till limning av papper samt limningsfoerfarande
EP0362823B1 (de) Papier für photographische Anwendungen
EP0719893B1 (de) Verfahren zum Leimen von Papier mit einem Kolophonium/Kohlenwasserstoffharz Leimungsmittel
EP0830479B1 (de) Verfahren zur erhöhung der wasserfestigkeit von druckpapieren
CA1044859A (en) Method of sizing paper
JPS6231118B2 (de)
CA2282211C (en) Process for preparing a paper web
US5371126A (en) Processing aid for paper making
WO1999041453A1 (en) Paper sizing
EP1047834B1 (de) Mischung aus kieselsäure und saurem kolloid zu einem mikropartikelsystem für die papierherstellung
JPS6223119B2 (de)
JP2000282392A (ja) 低密度紙
JP2588211B2 (ja) 中性紙の製造方法
JP3306860B2 (ja) 低密度印刷用紙
JP3283248B2 (ja) 抄紙用紙質向上剤
US5562974A (en) Permanent paper
JP3387036B2 (ja) 平滑性及び透気性向上剤
JP3023679B2 (ja) 紙の内添サイジング方法
CA1075944A (en) Filled paper

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE NL

17P Request for examination filed

Effective date: 19901218

17Q First examination report despatched

Effective date: 19930924

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19960703

REF Corresponds to:

Ref document number: 68926770

Country of ref document: DE

Date of ref document: 19960808

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20081014

Year of fee payment: 20