GB1146117A - Process for the preparation of pressure-sensitive copying papers - Google Patents

Process for the preparation of pressure-sensitive copying papers

Info

Publication number
GB1146117A
GB1146117A GB16035/67A GB1603567A GB1146117A GB 1146117 A GB1146117 A GB 1146117A GB 16035/67 A GB16035/67 A GB 16035/67A GB 1603567 A GB1603567 A GB 1603567A GB 1146117 A GB1146117 A GB 1146117A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
sodium sulphite
reaction
april
urea
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
GB16035/67A
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
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of GB1146117A publication Critical patent/GB1146117A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/165—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components characterised by the use of microcapsules; Special solvents for incorporating the ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/20—After-treatment of capsule walls, e.g. hardening
    • B01J13/206—Hardening; drying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249962—Void-containing component has a continuous matrix of fibers only [e.g., porous paper, etc.]
    • Y10T428/249963—And a force disintegratable component [e.g., stencil sheet, etc.]

Abstract

1,146,117. Treating microcapsules. FUJI SHASHIN FILM K.K. 7 April, 1967 [9 April, 1966], No. 16035/67. Heading B8C. [Also in Division D2] In a process for producing pressure-sensitive copying paper comprising an electron-accepting paper support coated with a microcapsule dispersion of a colourless electron-donating organic compound encapsulated in gelatine or gum arabic, which is hardened by reaction with formaldehyde, free remaining formaldehyde is removed from the dispersion before it is used to coat the support, by reaction with urea or sodium sulphite, to protect workers from the effects of formaldehyde fumes at the drying stage of the coated paper. When urea is added at a pH of 3 to 5 or 8 to 12, 30‹ to 60‹ C., in the proportion of 1 to 3 moles per mole of residual formaldehyde, after 4 hours, and sodium sulphite at pH of 6 to 8, room temperature, 1 to 1-5 moles per mole of residual formaldehyde after two hours a crystalline addition product is formed. In the case of sodium sulphite, acetic acid is added to keep the pH below 10, as NaOH formed in the reaction increases the #H.
GB16035/67A 1966-04-09 1967-04-07 Process for the preparation of pressure-sensitive copying papers Expired GB1146117A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2219766 1966-04-09

Publications (1)

Publication Number Publication Date
GB1146117A true GB1146117A (en) 1969-03-19

Family

ID=12076055

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16035/67A Expired GB1146117A (en) 1966-04-09 1967-04-07 Process for the preparation of pressure-sensitive copying papers

Country Status (3)

Country Link
US (1) US3447945A (en)
DE (1) DE1671541C3 (en)
GB (1) GB1146117A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612556A (en) * 1983-10-07 1986-09-16 The Wiggins Teape Group Limited Self-contained pressure sensitive copying material and its production
US6143352A (en) * 1994-06-28 2000-11-07 Closure Medical Corporation pH-modified biocompatible monomer and polymer compositions

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535139A (en) * 1966-11-17 1970-10-20 Pilot Pen Co Ltd Pressure-sensitive copying papers
US4107288A (en) * 1974-09-18 1978-08-15 Pharmaceutical Society Of Victoria Injectable compositions, nanoparticles useful therein, and process of manufacturing same
EP0009413B1 (en) * 1978-09-27 1982-10-20 Kanzaki Paper Manufacturing Company Limited Process for removing aldehyde from dispersions of microcapsules
JPS5567328A (en) * 1978-11-07 1980-05-21 Fuji Photo Film Co Ltd Preparation of microcapsule dispersion
JPS5651238A (en) * 1979-10-02 1981-05-08 Fuji Photo Film Co Ltd Production of microminiature capsule
JPS57147430A (en) * 1981-03-06 1982-09-11 Kureha Chem Ind Co Ltd Preparation of microcapsule
US8640546B2 (en) 2011-09-12 2014-02-04 Del Monte Corporation Sensor for high pressure processing of articles
US10605681B2 (en) 2016-09-23 2020-03-31 Chromatic Technologies, Inc. High pressure processing pressure sensor
US10345278B2 (en) 2016-09-23 2019-07-09 Chromatic Technologies, Inc. High pressure processing pressure sensor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL95044C (en) * 1953-06-30
US2712507A (en) * 1953-06-30 1955-07-05 Ncr Co Pressure sensitive record material
US3168400A (en) * 1961-05-22 1965-02-02 Eastman Kodak Co Rapid processing of photographic color materials

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612556A (en) * 1983-10-07 1986-09-16 The Wiggins Teape Group Limited Self-contained pressure sensitive copying material and its production
US6143352A (en) * 1994-06-28 2000-11-07 Closure Medical Corporation pH-modified biocompatible monomer and polymer compositions
US6306243B1 (en) 1994-06-28 2001-10-23 Closure Medical Corporation pH-modified biocompatible monomer and polymer compositions

Also Published As

Publication number Publication date
DE1671541A1 (en) 1972-02-24
DE1671541B2 (en) 1973-11-29
US3447945A (en) 1969-06-03
DE1671541C3 (en) 1983-02-03

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