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    Process of encapsulating basic nitrogen compounds with acid-precursor gelatin
    163.
    发明授权
    Process of encapsulating basic nitrogen compounds with acid-precursor gelatin 失效
    用酸 - 前体凝胶包封碱性硝酸化合物的方法

    公开(公告)号：US3666678A

    公开(公告)日：1972-05-30

    申请号：US3666678D

    申请日：1968-01-12

    Applicant: MOSIER BENJAMIN

    Inventor： MOSIER BENJAMIN ,  TIPPETT CHARLES E

    IPC: A01N25/28 ,  B01J13/10 ,  C23F11/08 ,  B01J13/02 ,  A01N17/00 ,  C23F11/14

    CPC classification number: A01N25/28 ,  B01J13/10 ,  C23F11/08 ,  Y10S507/902 ,  Y10S507/92 ,  Y10S507/939 ,  Y10T428/2984

    Abstract: Process of microencapsulation employing acid precursor (type A) gelatin as the encapsulating macrocolloid, particularly applicable to the formation of liquid center microcapsules containing a basic (cationic) nitrogen compound. For example, an aqueous solution of acid-precursor gelatin is mixed at an alkaline pH with a water-immiscible organic solvent solution of the nitrogen compound, such as an amine or quaternary. The pH of the mixture and the gelatin phase is reduced to at least 4.0 and preferably 3.0 or below, the liquid phases being intermixed to disperse and emulsify the organic solvent phase in the aqueous phase, thereby providing minute droplets of the basic nitrogen containing organic solvent surrounded by the aqueous solution of the acid-precursor gelatin. On the completion of the pH reduction, the gelatin will have formed a coating around the individual droplets to provide encapsulating skins therefor. While the encapsulated droplets can be recovered with some success at the lowest acid pH, it is much preferred to raise the pH to a pH at least above 5.5 and preferably to an alkaline pH before recovering the microcapsules. An auxiliary coating can be applied to the recovered microcapsules by contacting them with an aqueous solution of alkali-precursor gelatin.

    Abstract translation: 使用酸性前体（A型）明胶作为包封大胶体的微胶囊化方法，特别适用于形成含有碱性（阳离子）氮化合物的液体中心微胶囊。 例如，酸性前体明胶的水溶液在碱性pH下与氮化合物如胺或季铵的与水不混溶的有机溶剂溶液混合。 将混合物和明胶相的pH降低至至少4.0，优选3.0或更低，混合液相以在水相中分散和乳化有机溶剂相，从而提供含有碱性氮的有机溶剂的微滴 被酸 - 前体明胶的水溶液包围。 在pH降低完成后，明胶将在单个液滴周围形成涂层，以提供封装外观。 尽管可以在最低酸性pH下回收成套的胶囊，但是在回收微胶囊之前，将pH调节至至少高于5.5，优选将pH提高至碱性pH值是非常优选的。 通过将辅助涂层与碱前体明胶的水溶液接触，可将辅助涂层施加到回收的微胶囊上。

    Encapsulation process by complex coacervation using inorganic polymers
    165.
    发明授权
    Encapsulation process by complex coacervation using inorganic polymers 失效
    通过使用无机聚合物的复合材料的包封工艺

    公开(公告)号：US3639256A

    公开(公告)日：1972-02-01

    申请号：US3639256D

    申请日：1970-05-27

    Applicant: NCR CO

    Inventor： HORGER GEORG

    IPC: A61K9/50 ,  B01J13/10 ,  A61K9/04 ,  B01J13/02 ,  B44D1/02

    CPC classification number: A61K9/50 ,  B01J13/10 ,  Y10T428/2984 ,  Y10T428/2987 ,  Y10T428/2989

    Abstract: A process is disclosed for manufacturing capsules, en masse, by use of a liquid-liquid phase separation which includes certain inorganic material as complexing, phase-separation-inducing, polymer. The disclosed process is conducted in an aqueous capsule manufacturing vehicle and the material which emerges as a liquid phase is an aqueous solution of organic hydrophilic polymeric material and inorganic polymeric material complexed together. The liquid-liquid phase separation of this invention is the type generally named ''''complex'''' coacervation wherein the separated, emergent, liquid phase includes a major portion of both, the organic hydrophilic polymeric material and the phase-separationinducing material; in this invention, inorganic polyacid polymeric material. The organic polymeric material and the inorganic polymeric material are complexed together by virtue of opposite electrical charges, the complex is at least partially immiscible with the manufacturing vehicle, and the manufacturing vehicle contains only a minor amount of either polymeric material. Preferred materials for use in practicing the present invention include gelatin as the organic hydrophilic polymeric material and polymolybdates and polytungstates as the inorganic polymeric phase-separation-inducing material.

    Abstract translation: 公开了一种通过使用包含某些无机材料作为络合，相分离诱导的聚合物的液相分离来大量制造胶囊的方法。 所公开的方法在水性胶囊制造载体中进行，并且作为液相出现的材料是有机亲水聚合物材料和无机聚合物材料的水溶液复合在一起。 本发明的液 - 液相分离是通常称为“复合”凝聚的类型，其中分离的，紧急的液相包括两者的主要部分，有机亲水聚合物材料和相分离诱导材料; 在本发明中，无机多酸聚合材料。 有机聚合物材料和无机聚合物材料由于相反的电荷而复合在一起，复合物至少部分地与制造车辆不混溶，并且制造车辆仅含有少量的聚合物材料。 用于实施本发明的优选材料包括作为有机亲水聚合物材料的明胶和作为无机聚合物相分离诱导材料的多钼酸盐和多钨酸盐。

    Process for making dual walled microcapsules
    167.
    发明授权
    Process for making dual walled microcapsules 失效
    制造双壁微孔的方法

    公开(公告)号：US3578605A

    公开(公告)日：1971-05-11

    申请号：US3578605D

    申请日：1968-08-02

    Applicant: MOORE BUSINESS FORMS INC

    Inventor： BAXTER GEORGE

    IPC: B01J13/10 ,  B01J13/02 ,  A61K9/04 ,  B44D1/16

    CPC classification number: B01J13/10 ,  Y10T428/2984

    Abstract: A METHOD OF FORMING DUAL WALLED MICROCAPSULES AROUND CORE PARTICLES OR NUCLEL OF OILY OR SOLVENT MATERIAL IN WHICH THE OILY OR SOLVNET MATERIAL CONTAINING A DIBASIC OR LONG-CHAIN ORGANIC ACID CHLORIDE IS DISPERSED IN AN AQUEOUS SOLSUTION OF A HYDROPHILIC SOLLOIDAL PROTEIN AND A SECOND HYDROPHILIC COLLOID WHICH IS ADAPTED TO UNDERGO COACERVATION WITH THE COLLOIDAL PROTIEN UPON A REDUCTION IN THE PH OF THE AQUEOUS SOLUTION. THE ACID CHLORIDE REACTS WITH THE PROTEIN TO FORM A THIN FILM OF INSOLUBILIZED PROTEIN AROUND THE CORE PARTICLES OR NUCLEI, RELEASING HYDROCHLORIC ACID AS A REACTION BY-PRODUCT WHICH LOWERS THE PH OF THE AQUEOUS SOLUTION TO THE POINT AT WHICH COACERVATION OF THE COLLOIDS TAKE PALCE, DEPOSITING AN OUTER SHELL OF COMPLEX COACERVATE, THE DUAL-WALLED CAPSULES CAN BE GIVEN A HARDENING TREATMENT, USING FORMALDEHYDE OR THE LIKE. THE RESULTANT CAPSULES RETAIN EVEN RELATIVELY VOLATILE MATTER FOR LONG PERIODS OF TIME.

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