ES2109136A1 - Polimeros biodegradables de esqueleto carbonado de acetales de centeno y alcoholes, procedimiento para su obtencion y composicion y utilizacion correspondientes. - Google Patents
Polimeros biodegradables de esqueleto carbonado de acetales de centeno y alcoholes, procedimiento para su obtencion y composicion y utilizacion correspondientes.Info
- Publication number
- ES2109136A1 ES2109136A1 ES09400847A ES9400847A ES2109136A1 ES 2109136 A1 ES2109136 A1 ES 2109136A1 ES 09400847 A ES09400847 A ES 09400847A ES 9400847 A ES9400847 A ES 9400847A ES 2109136 A1 ES2109136 A1 ES 2109136A1
- Authority
- ES
- Spain
- Prior art keywords
- cetene
- carbon skeleton
- formula
- acetals
- alcohols
- 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
POLIMEROS BIODEGRADABLES DE ESQUELETO CARBONADO DE ACETALES DE CETENO Y ALCOHOLES, PROCEDIMIENTO PARA SU OBTENCION Y COMPOSICION Y UTILIZACION CORRESPONDIENTES. EL ESQUELETO CARBONADO DE LOS POLIMERAS ESTA REPRESENTADO POR LA FORMULA REPETITIVA I, DONDE N < 2; R2 GRUPO HIDROCARBONADO SATURADO O INSATURADO; Y A UN ACETAL DE CETENO DE (A) FORMULA III FORMULA R H O UN GRUPO SATURADO O INSATURADO SUSCEPTIBLE DE CONTENER HETERATOMOS; R---R SIGNIFICA QUE LOS R PUEDEN FORMAR CICLO O NO; Y R1 RADICAL TETRAVALENTE UNICO; O (B) FORMULA IV FORMULA R4 H O UN GRUPO HIDROCARBONADO; R4--R4 SIGNIFICA QUE R4 PUEDEN FORMAR CICLO O NO; R3 GRUPO ORGANICO BIVALENTE SUSCEPTIBLE DE CONTENER HETEROATOMOS. ESTOS POLIMERAS SON APROPIADOS COMO SOPORTE DE MEDICAMENTOS Y OTROS AGENTES BENEFICIOSOS UTILIZADOS EN EL AMBITO TERAPEUTICO, PUESTO QUE AL ENTRAR EN CONTACTO CON EL MEDIO FISIOLOGICO EN EL QUE SON UTILIZADOS, SE DEGRADAN Y LIBERAN EL MEDICAMENTO O SIMILAR DE UNA FORMA PROGRESIVA Y CONTROLADA.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES09400847A ES2109136B1 (es) | 1994-04-22 | 1994-04-22 | Polimeros biodegradables de esqueleto carbonado de acetales de centeno y alcoholes, procedimiento para su obtencion y composicion y utilizacion correspondientes. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES09400847A ES2109136B1 (es) | 1994-04-22 | 1994-04-22 | Polimeros biodegradables de esqueleto carbonado de acetales de centeno y alcoholes, procedimiento para su obtencion y composicion y utilizacion correspondientes. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2109136A1 true ES2109136A1 (es) | 1998-01-01 |
ES2109136B1 ES2109136B1 (es) | 1998-07-01 |
Family
ID=8285970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES09400847A Expired - Lifetime ES2109136B1 (es) | 1994-04-22 | 1994-04-22 | Polimeros biodegradables de esqueleto carbonado de acetales de centeno y alcoholes, procedimiento para su obtencion y composicion y utilizacion correspondientes. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2109136B1 (es) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4304767A (en) * | 1980-05-15 | 1981-12-08 | Sri International | Polymers of di- (and higher functionality) ketene acetals and polyols |
US4489056A (en) * | 1982-06-30 | 1984-12-18 | Merck & Co., Inc. | Acid anhydrides as rate controlling agent for the erosion of polymers which latter polymers have beneficial substances dispersed throughout their matrix or where the polymer matrix surrounds the beneficial substance |
US4780319A (en) * | 1985-07-08 | 1988-10-25 | Merck & Co., Inc. | Organic acids as catalysts for the erosion of polymers |
-
1994
- 1994-04-22 ES ES09400847A patent/ES2109136B1/es not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4304767A (en) * | 1980-05-15 | 1981-12-08 | Sri International | Polymers of di- (and higher functionality) ketene acetals and polyols |
US4489056A (en) * | 1982-06-30 | 1984-12-18 | Merck & Co., Inc. | Acid anhydrides as rate controlling agent for the erosion of polymers which latter polymers have beneficial substances dispersed throughout their matrix or where the polymer matrix surrounds the beneficial substance |
US4780319A (en) * | 1985-07-08 | 1988-10-25 | Merck & Co., Inc. | Organic acids as catalysts for the erosion of polymers |
Also Published As
Publication number | Publication date |
---|---|
ES2109136B1 (es) | 1998-07-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EC2A | Search report published |
Date of ref document: 19980101 Kind code of ref document: A1 Effective date: 19980101 |
|
FA2A | Application withdrawn |
Effective date: 19990217 |