GB1436798A - Self-colouring pressure sensitive recording sheets - Google Patents
Self-colouring pressure sensitive recording sheetsInfo
- Publication number
- GB1436798A GB1436798A GB3950973A GB3950973A GB1436798A GB 1436798 A GB1436798 A GB 1436798A GB 3950973 A GB3950973 A GB 3950973A GB 3950973 A GB3950973 A GB 3950973A GB 1436798 A GB1436798 A GB 1436798A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wall film
- forming
- forming material
- oil droplets
- microcapsules
- 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
Links
Classifications
-
- 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
- B01J13/06—Making microcapsules or microballoons by phase separation
- B01J13/14—Polymerisation; cross-linking
- B01J13/16—Interfacial polymerisation
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Color Printing (AREA)
- Manufacturing Of Micro-Capsules (AREA)
Abstract
1436798 Microcapsules FUJI PHOTO FILM CO Ltd 14 Aug 1973 [14 Aug 1972] 39509/73 Addition to 1416224 Heading B8C [Also in Division D2] Microcapsules for use in pressure sensitive recording sheets are prepared by emulsifying in a polar liquid capable of forming a continuous phase an oily liquid containing (A) a colour former, and (B) and (C) first and second coreacting wall film-forming materials, adding a third wall film-forming material capable of reacting with the first wall film-forming material to form a high M.W. compound to the polar liquid either before or after emulsification, and forming capsule walls around the oil droplets of the emulsified oily liquid, the capsule walls being formed from inside the oil droplets by a reaction between the first and second wall film-forming materials, and simultaneously, by the reaction at the surface of the oil droplets between the first and third wall film-forming materials. The first wall film-forming material may be selected from polyisocyanates, polythioisocyanates, and their addition products containing residual isocyanate or isothiocyanate groups; the second wall film-forming material may be selected from polyhydroxy compounds, epoxy compounds, polycarboxylic acids, polythiols; and the third wall film-forming material may be selected from polyamines, modified polyamines, polyhydroxy compounds, polycarboxylic acids, polythiols. Other combinations are also described. The polar liquid may be water, an alcohol, or a ketone. Protective colloids and surfactants may be used for emulsification. Catalysts may be used to speed up microencapsulation. In a typical example, an adduct of hexamethylene diisocyanate and trimethylol propane containing residual isocyanate groups and polyoxypropylene glycol were added to a solution of crystal violet lactone and benzoyl lencomethylene blue in diisopropyl naphthalene together with a catalyst, dibutyltin laurate. The resulting oily solution was added to water containing carboxymethyl cellulose and polyvinyl alcohol to form oil droplets. After addition of water and an adduct of a polyamine and an epoxy compound, followed by heating, microcapsules were formed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8124972A JPS553156B2 (en) | 1972-08-14 | 1972-08-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1436798A true GB1436798A (en) | 1976-05-26 |
Family
ID=13741109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3950973A Expired GB1436798A (en) | 1972-08-14 | 1973-08-04 | Self-colouring pressure sensitive recording sheets |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS553156B2 (en) |
BE (1) | BE803599A (en) |
DE (1) | DE2341113A1 (en) |
ES (1) | ES417857A1 (en) |
GB (1) | GB1436798A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4165398A (en) | 1976-01-19 | 1979-08-21 | Wiggins Teape Limited | Pressure-sensitive copying paper |
EP0031239A1 (en) * | 1979-12-19 | 1981-07-01 | Danepak Limited | Package printing |
US5342556A (en) * | 1991-09-16 | 1994-08-30 | Bayer Aktiengesellschaft | Microcapsules made of isocyanates with groups containing polyethylene oxide |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54147402U (en) * | 1978-04-03 | 1979-10-13 | ||
DE3472472D1 (en) * | 1983-04-13 | 1988-08-04 | Fuji Photo Film Co Ltd | Heat sensitive recording materials |
-
1972
- 1972-08-14 JP JP8124972A patent/JPS553156B2/ja not_active Expired
-
1973
- 1973-08-04 GB GB3950973A patent/GB1436798A/en not_active Expired
- 1973-08-13 ES ES417857A patent/ES417857A1/en not_active Expired
- 1973-08-14 BE BE134568A patent/BE803599A/en unknown
- 1973-08-14 DE DE19732341113 patent/DE2341113A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4165398A (en) | 1976-01-19 | 1979-08-21 | Wiggins Teape Limited | Pressure-sensitive copying paper |
EP0031239A1 (en) * | 1979-12-19 | 1981-07-01 | Danepak Limited | Package printing |
US5342556A (en) * | 1991-09-16 | 1994-08-30 | Bayer Aktiengesellschaft | Microcapsules made of isocyanates with groups containing polyethylene oxide |
Also Published As
Publication number | Publication date |
---|---|
ES417857A1 (en) | 1976-03-01 |
JPS4937710A (en) | 1974-04-08 |
DE2341113A1 (en) | 1974-02-28 |
BE803599A (en) | 1973-12-03 |
JPS553156B2 (en) | 1980-01-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed |