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1. 发明公开

EP4134102A1 SUSTAINED RELEASE BASE 审中-实审
公开(公告)号：EP4134102A1
公开(公告)日：2023-02-15
申请号：EP21784091.7
申请日：2021-03-24
申请人： Japan Vam & Poval Co., Ltd.
发明人： KAWADA Shotaro , KAWANISHI Masatoshi
IPC分类号： A61K47/32 , A61K9/20 , A61K31/522 , A61K31/525 , A61K47/38 , A61P11/06
摘要： A novel sustained-release base is provided. The sustained-release base is a combination of a polyvinyl alcohol-based polymer and a low-substituted hydroxypropyl cellulose.

2. 发明公开

EP3815714A1 COATING COMPOSITION, ORAL SOLID PREPARATION AND METHOD FOR PRODUCING SAME 有权
公开(公告)号：EP3815714A1
公开(公告)日：2021-05-05
申请号：EP19824518.5
申请日：2019-06-24
申请人： Japan Vam & Poval Co., Ltd.
发明人： KAWADA, Shotaro , KAWANISHI, Masatoshi
IPC分类号： A61K47/04 , A61K9/14 , A61K9/30 , A61K9/36 , A61K47/14 , A61K47/26 , A61K47/32
摘要： Provided is a novel coating composition for oral solid preparations. The coating composition for oral solid preparations comprises a polyvinyl alcohol-based polymer (a), a fatty acid ester of a polyol having 3 or more hydroxy groups (b), and talc (c),
wherein the fatty acid ester of a polyol having 3 or more hydroxy groups (b) has a hydrophilic lipophilic balance (HLB) value of 4.0 or more;
wherein the fatty acid ester of a polyol having 3 or more hydroxy groups (b) has 12 to 22 carbon atoms per fatty acid ester unit; and
wherein the talc (c) is present at 50% by mass or less of the whole composition.

3. 发明公开

EP3536714A1 DISPERSION AID FOR SUSPENSION POLYMERIZATION, AND PROCESS FOR PRODUCING VINYL-BASED POLYMER USING SAME 有权
公开(公告)号：EP3536714A1
公开(公告)日：2019-09-11
申请号：EP17866768.9
申请日：2017-10-17
申请人： Japan Vam & Poval Co., Ltd.
发明人： OMORI Takehiro , KOZUKA Yoshiaki
IPC分类号： C08F2/20 , C08F8/12 , C08F8/28 , C08F18/08
摘要： Provided is a dispersion assistant useful for suspension polymerization of vinyl-based compounds. The dispersion assistant comprises a polyvinyl alcohol-based polymer (A) comprising a constituent unit represented by the general formula (1) shown below at 0.1 to 10 mol% per polyvinyl alcohol monomer unit and having a saponification degree of 15 to 70 mol%.

(In the formula, R denotes an alkyl group.)

4. 发明公开

EP3587555A1 CELL- OR TISSUE-EMBEDDING DEVICE 审中-实审
公开(公告)号：EP3587555A1
公开(公告)日：2020-01-01
申请号：EP18757371.2
申请日：2018-02-23
申请人： Japan Vam & Poval Co., Ltd. , National University Corporation Tohoku Unversity
发明人： OHARUDA, Akinobu , KIMURA, Yoshihiro , GOTO, Masafumi
IPC分类号： C12M3/00 , A61K35/12 , A61K35/22 , A61K35/26 , A61K35/28 , A61K35/30 , A61K35/39 , A61K35/407 , A61K35/545 , A61K35/55 , C12N11/04 , A61P3/00 , A61P5/00
摘要： To provide a cell or tissue embedding device highly capable of supplying a physiologically active substance, by curbing the reduction of living cells or living tissue in the process of preparing a PVA gel containing the living cells or living tissue.
An aqueous gel to form an immunoisolation layer of a cell or tissue embedding device has, as its component, a polyvinyl alcohol resin having a syndiotacticity of 32 to 40% in triad.

5. 发明公开

EP3530679A1 METHOD FOR ACCELERATING CROSSLINKING REACTION OF POLYVINYL ALCOHOL RESIN 有权
公开(公告)号：EP3530679A1
公开(公告)日：2019-08-28
申请号：EP17861858.3
申请日：2017-10-17
申请人： Japan Vam & Poval Co., Ltd.
发明人： KAWANISHI Masatoshi
IPC分类号： C08F16/06 , B41M5/52 , C08F8/30 , C08F20/58 , C08J3/24 , C08K5/25 , C08L29/04
摘要： Provided is a method for accelerating the reaction rate of a PVA resin containing a diacetone acrylamide unit with a crosslinking agent having a hydrazino group. In this method, when the PVA resin containing a diacetone acrylamide unit is reacted with the crosslinking agent having a hydrazino group, a water-soluble metal not containing any alkaline or alkaline-earth metal coexists.

6. 发明公开

EP3059266A1 METHOD OF PRODUCING POLYVINYL ALCOHOL RESIN, AND POLYVINYL ALCOHOL RESIN OBTAINED THEREBY 有权
标题翻译： VERFAHREN ZUR HERSTELLUNG EINES POLYVINYLALKOHOLHARZES UND SO HERGESTELLTES POLYVINYLALKOHOLHARZ
公开(公告)号：EP3059266A1
公开(公告)日：2016-08-24
申请号：EP14854506.4
申请日：2014-09-10
申请人： Japan Vam & Poval Co., Ltd.
发明人： OHARUDA, Akinobu , KAWANISHI, Masatoshi
IPC分类号： C08F216/06 , B41M5/00 , B41M5/337 , B41M5/50 , B41M5/52 , C08F8/12 , C08F218/08 , C08L29/04 , C09D129/04
摘要： Provided are a method for producing a polyvinyl alcohol resin which is highly transparent in the form of an aqueous solution, has a good appearance when formed into a film or an aqueous gel, and improves ink acceptability and color appearance and exhibits water resistance when used for a thermal recording material or an ink-jet recording material; and a polyvinyl alcohol resin obtained by the method. In particular, provided is a method for producing a polyvinyl alcohol resin, comprising the steps of copolymerizing an aliphatic vinyl ester (A) with diacetone acrylamide (B), at least a part of which diacetone acrylamide (B) is added at a later stage, in the presence of a polymerization catalyst in an alcohol solvent, so that the ratio (a)/(b) of the polymerization yield at the end of the polymerization (a) to the polymerization yield at the end of the later addition (b) of diacetone acrylamide (B) is in the range of 1.01 to 1.10, and saponifying the resulting copolymer.
摘要翻译：提供一种以水溶液形式高度透明的聚乙烯醇树脂的制造方法，当形成膜或水性凝胶时具有良好的外观，并且改善油墨可接受性和颜色外观，并且当用于热敏记录材料或喷墨记录材料; 和通过该方法得到的聚乙烯醇树脂。特别是提供一种聚乙烯醇树脂的制造方法，其特征在于，包括使脂肪族乙烯基酯（A）与双丙酮丙烯酰胺（B）共聚的步骤，其中至少一部分在以后阶段加入双丙酮丙烯酰胺（B）在醇溶剂中存在聚合催化剂的情况下，聚合结束时的聚合产率（a）/（b）（a）与后期添加结束时的聚合收率（b ）双丙酮丙烯酰胺（B）的范围为1.01〜1.10，皂化所得共聚物。

7. 发明公开

EP2644403A4 METHOD FOR PRODUCING INKJET RECORDING MATERIAL 有权
标题翻译：用于生产喷墨记录材料
公开(公告)号：EP2644403A4
公开(公告)日：2015-11-25
申请号：EP11843489
申请日：2011-10-19
申请人： JAPAN VAM & POVAL CO LTD
发明人： KAWANISHI MASATOSHI , OHARUDA AKINOBU
IPC分类号： B41M5/00 , B05D5/04 , B41M5/50 , B41M5/52
CPC分类号： B41M5/5254 , B41M5/5218

8. 发明公开

EP4368645A1 DISPERSION STABILIZER AND VINYL-BASED POLYMER PRODUCTION METHOD 审中-实审
公开(公告)号：EP4368645A1
公开(公告)日：2024-05-15
申请号：EP22837655.4
申请日：2022-07-04
申请人： Japan Vam & Poval Co., Ltd.
发明人： OMORI Takehiro , KOZUKA Yoshiaki , TANAKA Shun
IPC分类号： C08F8/12 , C08F8/48 , C08F2/20 , C09K23/52
CPC分类号： C09K23/52 , C08F2/20 , C08F8/12 , C08F8/48
摘要： Provided are a novel dispersant for suspension polymerization, and the like. The dispersion stabilizer for suspension polymerization includes a polyvinyl alcohol-based polymer (A) having an acetal skeleton having an ionic group.

9. 发明公开

EP3881838A1 BONDING AGENT 审中-实审
公开(公告)号：EP3881838A1
公开(公告)日：2021-09-22
申请号：EP19883499.6
申请日：2019-11-13
申请人： Japan Vam & Poval Co., Ltd.
发明人： KAWADA, Shotaro , KAWANISHI, Masatoshi
IPC分类号： A61K31/167 , A61P25/04 , A61K9/14 , A61K9/20 , A61K9/32 , A61K47/32
摘要： A novel binder is provided. The binder comprises a polyvinyl alcohol-based polymer which has an average saponification value of 85.0 mol% to 89.0 mol% as measured according to JIS K6726 and meets requirement (A): a fluid prepared by adding 130.0 mL of 1-propanol to 100.0 g of a 5.0% by mass aqueous solution of the polyvinyl alcohol-based polymer has a transparency of 80.0% or less at 20°C; and/or requirement (B) : a supernatant from a fluid prepared by adding 230.0 mL of 1-propanol to 100.0 g of a 5.0% by mass aqueous solution of the polyvinyl alcohol-based polymer has a concentration of 0.65% by mass or more at 20°C.

10. 发明公开

EP3586824A1 CELL- OR TISSUE-EMBEDDING DEVICE 有权
公开(公告)号：EP3586824A1
公开(公告)日：2020-01-01
申请号：EP18757458.7
申请日：2018-02-23
申请人： Japan Vam & Poval Co., Ltd. , National University Corporation Tohoku Unversity
发明人： OHARUDA, Akinobu , KIMURA, Yoshihiro , GOTO, Masafumi
IPC分类号： A61K9/00 , A61K9/06 , A61K35/22 , A61K35/26 , A61K35/28 , A61K35/35 , A61K35/39 , A61K35/407 , A61K35/50 , A61K35/545 , A61K35/55 , A61K47/12
摘要： To provide a cell or tissue embedding device highly capable of supplying a physiologically active substance, by curbing the reduction of living cells or living tissue in the process of preparing a PVA gel containing the living cells or living tissue.
An aqueous gel to form an immunoisolation layer of a cell or tissue embedding device has a denatured polyvinyl alcohol resin having an activated carbonyl group (A) and a crosslinking agent (B) as its components.

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