US4271084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Germanium-containing organic polymer and the process for the production of the same
Assignee: Individual
•
Filing: 1979-02-14
•
Granted: 1981-06-02
•
Expires: 1999-02-14
Abstract
Abstract Germanium-containing organic polymers are obtained by polymerizing 3-trichlorogermylpropionic acid obtained by reacting halogermanium-phosphoric acid complexes with acrylic acid. The polymers are markedly effective in mental diseases, disturbances in heart and vascular systems and are also effective against various cancers.
Inventors
- 👤 Akira Ishikawa
- 👤 Yukihito Ishida
- 👤 Shiro Ikegami
- 👤 Hiroshi Satoh
- 👤 Ryuichi Sato
- 👤 Setsuo Tomisawa
- 👤 Shigeru Toyoshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:36
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/74; A61K31/80; C; C07; C07F; C07F7/00; C07F7/30; C08; C08G; C08G79/00; C08J; C08J2203/00; C08J2203/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
A germanium-containing organic polymer represented by the formula: ##STR16## wherein A represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, --COOH, --COOR (wherein R is an alkyl group having 1 to 3 carbon atoms), ##STR17## B represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; Z represents a hydroxy group, an alkoxy group having 1 to 3 carbon atoms or an alkyl group having 1 to 3 carbon atoms; and n is an integer greater than 3, inclusive.
Claim 2
Dependent Claim
87 words
A germanium-containing organic polymer represented by the formula: ##STR16## wherein A represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, --COOH, --COOR (wherein R is an alkyl group having 1 to 3 carbon atoms), ##STR17## B represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; Z represents a hydroxy group, an alkoxy group having 1 to 3 carbon atoms or an alkyl group having 1 to 3 carbon atoms; and n is an integer greater than 3, inclusive.
Claim 3
Dependent Claim
43 words
The germanium-containing organic polymer as claimed in claim 1 wherein said A is a hydrogen atom, a methyl group, --COOH, ##STR18## B is a hydrogen atom or a methyl group; and Z is a hydroxy group, a methoxy group or a methyl group.
Claim 4
Dependent Claim
46 words
The germanium-containing organic polymer as claimed in claim 2 wherein said A is a hydrogen atom, a methyl group or --COOH; B is a hydrogen atom or a methyl group; and Z is a hydroxy group, a methoxy group, an ethoxy group or a methyl group.
Claim 5
Dependent Claim
175 words
A process for producing germanium-containing organic polymer represented by the formula (III) or (IV) as given in claim 1 which comprises reacting a halogermanium-phosphoric acid complex obtained by treating germanium dioxide with hypophosphorous acid or a salt thereof in hydrohalogenic acid with a compound (I) represented by the formula: ##STR19## wherein A is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, --COOH, --COOR (wherein R is an alkyl group having 1 to 3 carbon atoms), ##STR20## B is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms and Z is a hydroxy group, an alkoxy group having 1 to 3 carbon atoms or an alkyl group having 1 to 3 carbon atoms, to obtain a compound (II) represented by the formula: ##STR21## wherein A, B and Z have the same meanings as defined above, and X is a halogen atom; and then dissolving said compound (II) in an organic solvent and adding water to the solution thus obtained so as to obtain a white needle crystalline polymer.
Claim 6
Dependent Claim
55 words
The process for producing the germanium-containing organic polymer as claimed in claim 4 wherein said compound of the formula (I) wherein A is a hydrogen atom, a methyl group, --COOH, ##STR22## B is a hydrogen atom or a methyl group, and Z is a hydroxy group, a methoxy group or a methyl group, is employed.
Claim 7
Dependent Claim
57 words
The process for producing the germanium-containing organic polymer as claimed in claim 5 wherein said compound of the formula wherein A is a hydrogen atom, a methyl group or --COOH; B is a hydrogen atom or a methyl group; and Z is a hydroxy group, a methoxy group, an ethoxy group or a methyl group, is employed.
Claim 8
Dependent Claim
46 words
The process for producing the germanium-containing organic polymer as claimed in claim 4 wherein a germanium-containing organic low molecular weight polymer is prepared by dissolving said compound of the formula (II) in acetone or other solvent miscible with water and pouring water into the resulting solution.
Claim 9
Dependent Claim
73 words
The process for producing the germanium-containing organic compound as claimed in claim 4 wherein a germanium-containing organic high molecular weight polymer is obtained by settling a suspension of a germanium-containing organic low molecular weight polymer in a small amount of water, said germanium-containing organic low molecular weight polymer being obtained by dissolving the compound of the formula (II) in acetone or other solvent miscible with water and pouring water into the resulting solution.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-01 | 1984-12-01 | 1985-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-01 | 1988-12-01 | 1989-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-01 | 1992-12-01 | 1993-06-02 | $7700.00 | Window Closed / Lapsed |