专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS5485184A PRODUCTION OF MICROCAPSULES 失效
公开(公告)号：JPS5485184A
公开(公告)日：1979-07-06
申请号：JP15342977
申请日：1977-12-20
申请人： FUJI PHOTO FILM CO LTD
发明人： KAKIMI FUJIO , SAEKI YOSHISATO , HOSHI YOSHIYUKI
IPC分类号： B41M5/165 , B01J13/18
摘要： PURPOSE:To obtain microcapsules of high heat resistance and low permeability by polymerizing urea with HCHO in the presence of an isobutylene/maleic anhydride copolymer to form urea/HCHO resin walls around a hydrophobic oily liquid dispersed in advance. CONSTITUTION:An aq. soln. system is prepared contg. an isobutylene/maleic anhydride copoymer with a MW of about 50000- about 200000 and a maleic anhydride content of 20-60 mol%, and urea. A hydrophobic oily liquid such as natural mineral oil which becomes a practically insol. nuclear substance is then emulsificaton dispersed in the system. After adding HCHO, the dispersion is regulated to pH

2. 发明专利

JPH05201138A HEAT-SENSITIVE RECORDING MATERIAL 失效
公开(公告)号：JPH05201138A
公开(公告)日：1993-08-10
申请号：JP16894091
申请日：1991-06-12
申请人： FUJI PHOTO FILM CO LTD
发明人： MITSUO HIROBUMI , HOSHI YOSHIYUKI
IPC分类号： B41M5/28 , B41M5/26 , B41M5/30 , B41M5/337
摘要： PURPOSE:To provide a heat-sensitive recording material which has high sensitivity, high picture quality, little adhesion of dregs to a heat-sensitive head and high-speed recording properties, by making use of a low-cost substrate. CONSTITUTION:An undercoating layer containing an oil absorbing pigment is provided on a substrate whose degree of stockigt sizing is at least 5 seconds and not exceeding 10 seconds by making use of blade coating and a heat- sensitive recording layer is provided on the undercoating layer. Then this is a heat-sensitive recording material wherein 1-5wt.% carboxy methyl cellulose having an etherification degree of 0.6-0.8 and mean molecular weight of 20,000-200,000 is used to a pigment.

3. 发明专利

JPS57103891A MICROCAPSULE DISPERSING LIQUID 失效
公开(公告)号：JPS57103891A
公开(公告)日：1982-06-28
申请号：JP18014980
申请日：1980-12-19
申请人： FUJI PHOTO FILM CO LTD
发明人： HAYASHI TAKAYUKI , HOSHI YOSHIYUKI
IPC分类号： B01J13/02 , B01J13/18 , B41M5/165
摘要： PURPOSE:To obtain the title dispersing liquid for pressure sensitive copying paper characterized by small increase in viscosity, which includes the microcapsule having a wall film of melamine formaldehyde polycondensated material and the like, anion macromolecular electrolyte, and bivalent water soluble metal salt. CONSTITUTION:The intended dispersing liquid which includes (A) the microcapsule having the wall film of the melamine formaldehyde polycondensated material or a urea formaldehyde polycondensated material, (B) anion macromolecular electrolyte (preferably polystyrene sulfonic acid soda and the like), and (C) bivalent water soluble metal salt (preferably calcium chloride). In order to obtain said dispersing liquid, e.g., hydrophobic material which is a core material of the capsule is dispersed in the aqueous solution of the component B. Then, an amino compound and formalin which are the wall material are added, amino resin is formed, and the capsule is obtained. Binder and the like are further added, then the component C is added.

4. 发明专利

JPS56102935A MANUFACTURE OF MICRO CAPSULE 失效
公开(公告)号：JPS56102935A
公开(公告)日：1981-08-17
申请号：JP608780
申请日：1980-01-22
申请人： FUJI PHOTO FILM CO LTD
发明人： HOSHI YOSHIYUKI , MATSUKAWA KANJI
IPC分类号： B01J13/16 , B01J13/18 , B41M5/165
摘要： PURPOSE:To raise the stability of emulsified liquid when capsule is formed for preventing the coalescence of oily liquid or the floating of the oily liquid to the surface by adding a multivalent isocyanate, multivalent isochiocyanate, or the prepolymer of these to the hydrophobic oily liquid to be capsulated. CONSTITUTION:A melamine-formaldehyde resin wall is formed on the surfaces of a hydrophobic oily liquid by polymerizing melamine and formaldehyde or the prepolymer of these in the presence of a water-soluble macromolecular compound. In this case, a multivalent isocyanate, a multivalent isothiocyanate, or the prepolymer of these are added to the hydrophobic oily liquid in order to raise the stability of emulsified liquid obtained.

5. 发明专利

JPS55119438A PRODUCTION OF MICROCAPSULE 失效
公开(公告)号：JPS55119438A
公开(公告)日：1980-09-13
申请号：JP2740679
申请日：1979-03-09
申请人： FUJI PHOTO FILM CO LTD
发明人： HOSHI YOSHIYUKI , MATSUKAWA KANJI
IPC分类号： B01J13/16 , B01J13/18 , B41M5/165
摘要： PURPOSE:To prevent the coalescence and surface floating of oily liquid to produce the captioned capsules by adding polyvalent iso(thio)cyanate or their prepolymer in the hydrophobic oily liquid. CONSTITUTION:Polyvalent isocyanate, polyvalent isothiocynate or their prepolymer is contained in hydrophobic oily liquid and this is emulsification-dispersed in a water soluble macromolecular aqueous solution. Thence, urea and HCHO are polymerized in the emulsion to let urea/HCHO resin walls form around the fine hydrophobic oily liquid, whereby the microcapsules are produced. By containing polyvalent iso(thio)cyanate or their prepolymer, the hydrophobic oily liquid is stably emulsified and microcapsuled.

6. 发明专利

JPS5551431A MANUFACTURE OF MICROCAPSULE 失效
公开(公告)号：JPS5551431A
公开(公告)日：1980-04-15
申请号：JP12560178
申请日：1978-10-12
申请人： FUJI PHOTO FILM CO LTD
发明人： KIRITANI MASAKI , HOSHI YOSHIYUKI , HAYASHI TAKAYUKI
IPC分类号： B41M5/165 , B01J13/18
摘要： PURPOSE:To obtain microcapsule which does not adhere to reactor from a high concentration but low viscosity of a capsule solution consisting of malamine and a formaldehyde resin, together with gum arabic and an ammonium salt. CONSTITUTION:Melamine and a formabldehyde resin in a formaldehyde resin/ melamine molal ratio=approx. 2-3 are dissolved in an aqueous solution of gum arabic, containing gum arabic in a gum arabic/melamine ratio=approx. 0.1-4 by weight. The aqueous gum arabic solution so obtained is heated with stirring to separate the melamine-formaldehyde polymer as a liquid solution phase, and then the particles of a core substance, e.g., natural mineral oil, an animal oil, etc., are enclosed by the liquid solution phase and the polycondensation reaction of the liquid sooution phase is continued to form an insoluble capsule wall. The polycondensation reaction is accelerated by the addition of an ammonium salt, e.g., ammonium chloride, etc. This method is most useful in the manufacture of microcapsule for pressure-sensitive recording papers, and can provide a 2-8 micron size of capsules from an enriched but low viscosity capsule solution at lower cost without the use of an exoensive high-molecular electrolyte, as in the conventional methods.

7. 发明专利

JPS5269329A IMAGE FORMATION 失效
公开(公告)号：JPS5269329A
公开(公告)日：1977-06-09
申请号：JP14557275
申请日：1975-12-05
申请人： FUJI PHOTO FILM CO LTD
发明人： HOSHI YOSHIYUKI , OKUMURA AKIO , SEOKA YOSHIO , YOKOTA YUKIO , USHIMARU AKIRA , NAKAJIMA YASUSUKE
IPC分类号： C09B53/00 , G03C1/00 , G03C1/06 , G03C5/16 , G03C7/30 , G03C7/34
摘要： PURPOSE:To rapidly form an image consisting of a color radiation image and a silver image and prevent concn. drop in a fixing solution, by subjecting a color radiation photographic light sensitive material containing a sepcified coupler to imagewise exposure and color development.

8. 发明专利

JPS57110492A MICROCAPSULE SHEET FOR PRESSURE SENSITIVE RECORDING PAPER 失效
公开(公告)号：JPS57110492A
公开(公告)日：1982-07-09
申请号：JP18566780
申请日：1980-12-29
申请人： FUJI PHOTO FILM CO LTD
发明人： HOSOI NORIYUKI , HOSHI YOSHIYUKI , MATSUKAWA KANJI
IPC分类号： B41M5/124 , B41M5/132
摘要： PURPOSE:To improve a color development property, by coating liquid containing a given surface active agent on one side of a microcapsule sheet. CONSTITUTION:A surface active agent has both a given hydrophobic group and hydrophilic atomic groups, such as di-1-dimethyl-3-methylpentyl sulfosuccinate, dihexyl sulfosuccinate, di-1-dimethyl-hyptylsulfosuccinate, and 0.0001-10pts.wt., based on 100pts.wt. a microcapsule solid matter, the surface active agent is mixed. In the mixture, a high-molecular material, whose molecular weight is a bout 1,000-10,000,000, such as stylenebutadien rubber latex, Arabia rubber, is used as a binder. The microcapsule sheet, which is excellent in high-speed coating apitude, is reduced in smearing at a coating and a processing time, and excellent in a coloring capacity, can be obtained through application of a given surface active agent.

9. 发明专利

JPS55132631A PREPARATION OF MICROCAPSULE CONTAINING HYDROPHOBIC OILLDROP 失效
公开(公告)号：JPS55132631A
公开(公告)日：1980-10-15
申请号：JP3992679
申请日：1979-04-03
申请人： FUJI PHOTO FILM CO LTD
发明人： HOSHI YOSHIYUKI , HAYASHI TAKAYUKI
IPC分类号： B01J13/18
摘要： PURPOSE:To obtain a capsule containing hydrophobic oil-drops for a pressure sensing recording sheet with a resin wall film provided with a compact property by a method wherein urea and formaldehyde are polymerized under the existence of polyvinyl alcohol with the specified degree of saponification. CONSTITUTION:Urea is dissolved in a water solution containing polyvinyl alcohol with the degree of saponification of 95% or more. A hydrophobic oilness liquid containing a color former, etc., which must be contained in a capsule, is emulsified and dispersed to the water solution. The temperature is raised while adding formaldehyde and agitating the solution, and the urea and the formaldehyde are polymerized and condensed while forming a capsule wall. The urea may be added before condensation. Ammonium salt is jointly used for promoting the reaction in case of reaction as necessary. According to this method, the bluing of a capsule liquid is prevented, and the reaction is completed for a short time.

10. 发明专利

JPS5567328A PREPARATION OF MICROCAPSULE DISPERSION 失效
公开(公告)号：JPS5567328A
公开(公告)日：1980-05-21
申请号：JP13696478
申请日：1978-11-07
申请人： FUJI PHOTO FILM CO LTD
发明人： HOSHI YOSHIYUKI , HAYASHI TAKAYUKI , KAKIMI FUJIO
IPC分类号： B01J13/20
摘要： PURPOSE:To remove free formalin by absorption without deteriorating a capsule wall by adding urea and sulfite or hydrosulfurous acid salt to a microcapsule dispersion. CONSTITUTION:To a microcapsule dispersion using a condensation resin of amino compound and formaldehyde as a microcapsule wall material, urea is firstly added at a concentration of about 1/10-5 fold mole of formaldehyde and said dispersion is stirred at a heating temperature of 40-80 deg.C to remove primary free formalin, thereafter a sulfite or hydrosulforous acid salt of sodium, potassium and the like or a comined mixture thereof is added and stirred under heating to remove secondary free formalin. Thereby, free formalin is removed without deteriorating or breaking the denseness of the microcapsule wall.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式