JPS5256148A - Process for preparing active substances having improved - Google Patents
Process for preparing active substances having improvedInfo
- Publication number
- JPS5256148A JPS5256148A JP50124587A JP12458775A JPS5256148A JP S5256148 A JPS5256148 A JP S5256148A JP 50124587 A JP50124587 A JP 50124587A JP 12458775 A JP12458775 A JP 12458775A JP S5256148 A JPS5256148 A JP S5256148A
- Authority
- JP
- Japan
- Prior art keywords
- improved
- active substances
- preparing active
- pva
- active material
- 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.)
- Granted
Links
Abstract
PURPOSE:To introduce electrolytic or polar groups into a polyvinyl alcohol (PVA), thus reducing the release speed of an active material by means of the affinity of the active material for the PVA.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50124587A JPS5256148A (en) | 1975-10-16 | 1975-10-16 | Process for preparing active substances having improved |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50124587A JPS5256148A (en) | 1975-10-16 | 1975-10-16 | Process for preparing active substances having improved |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5256148A true JPS5256148A (en) | 1977-05-09 |
JPS5232971B2 JPS5232971B2 (en) | 1977-08-25 |
Family
ID=14889144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50124587A Granted JPS5256148A (en) | 1975-10-16 | 1975-10-16 | Process for preparing active substances having improved |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5256148A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2435485A1 (en) * | 1978-09-07 | 1980-04-04 | Sumitomo Chemical Co | PROCESS FOR THE PREPARATION OF VERY ABSORBENT POLYMERS |
JPS55102512A (en) * | 1979-01-29 | 1980-08-05 | Perstorp Ab | Blend and its administration |
EP0263647A2 (en) * | 1986-10-06 | 1988-04-13 | Shin-Etsu Chemical Co., Ltd. | PVA gel |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7811601B2 (en) | 2003-04-03 | 2010-10-12 | Seed Co., Ltd. | Ophthalmic lenses capable of sustained drug release and preservative solutions therefor |
JP5352983B2 (en) * | 2006-10-19 | 2013-11-27 | 東レ株式会社 | Ophthalmic lens |
JP5900424B2 (en) * | 2006-10-19 | 2016-04-06 | 東レ株式会社 | Ophthalmic lens |
-
1975
- 1975-10-16 JP JP50124587A patent/JPS5256148A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2435485A1 (en) * | 1978-09-07 | 1980-04-04 | Sumitomo Chemical Co | PROCESS FOR THE PREPARATION OF VERY ABSORBENT POLYMERS |
JPS55102512A (en) * | 1979-01-29 | 1980-08-05 | Perstorp Ab | Blend and its administration |
JPH0140013B2 (en) * | 1979-01-29 | 1989-08-24 | Perstorp Ab | |
EP0263647A2 (en) * | 1986-10-06 | 1988-04-13 | Shin-Etsu Chemical Co., Ltd. | PVA gel |
US4788242A (en) * | 1986-10-06 | 1988-11-29 | Shin-Estu Chemical Co., Ltd. | Polyvinyl alcohol-based reversibly hydrated gel, highly water-absorptive resin and method for the preparation thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS5232971B2 (en) | 1977-08-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |