Patent US6084238A successfully refreshed from Google Patents.
US4035558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing organic-inorganic polyion complex
Assignee: Tosoh Corp
•
Filing: 1976-08-12
•
Granted: 1977-07-12
•
Expires: 1996-08-12
Abstract
Abstract An organic-inorganic polyion complex is prepared by reacting a polycation polymer with an alkali silicate in the presence of a solvent.
Inventors
- 👤 Toru Seita
- 👤 Akihiko Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:41
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
132 words
In a process for producing an organic-inorganic polyion complex by reacting a polycation polymer with an alkali silicate in the presence of a solvent, the improvement comprising: reacting said silicate with a polycation polymer having repeating units selected from the group consisting of: ##STR4## wherein R represents a C 1-10 hydrocarbon group, an alkylol group, benzyl or phenylalkyl; R 1 represents hydrogen or a C 1-4 hydrocarbon group; R 2 represents hydrogen or a C 1-2 alkyl group; R 3 and R 4 can be the same or different and each represents a C 1-6 hydrocarbon group; R 5 represents hydrogen or methyl; X represents halogen or hydroxyl; M represents a vinyl monomer; x represents 0 or an integer of less than 40,000 and n represents an integer from 10 to 50,000.
Claim 2
Dependent Claim
132 words
In a process for producing an organic-inorganic polyion complex by reacting a polycation polymer with an alkali silicate in the presence of a solvent, the improvement comprising: reacting said silicate with a polycation polymer having repeating units selected from the group consisting of: ##STR4## wherein R represents a C 1-10 hydrocarbon group, an alkylol group, benzyl or phenylalkyl; R 1 represents hydrogen or a C 1-4 hydrocarbon group; R 2 represents hydrogen or a C 1-2 alkyl group; R 3 and R 4 can be the same or different and each represents a C 1-6 hydrocarbon group; R 5 represents hydrogen or methyl; X represents halogen or hydroxyl; M represents a vinyl monomer; x represents 0 or an integer of less than 40,000 and n represents an integer from 10 to 50,000.
Claim 3
Dependent Claim
16 words
The process of claim 1, wherein the alkali silicate is an alkali metal or ammonium silicate.
Claim 4
Dependent Claim
15 words
The process of claim 2, wherein said alkali metal silicate is potassium or sodium silicate.
Claim 5
Dependent Claim
22 words
The process of claim 1, wherein the alkali silicate is Na 2 O-- NSiO 2 , wherein n is 2 to 4.
Claim 6
Dependent Claim
17 words
The process of claim 1, wherein the polycation polymer is a polyelectrolyte having a basic ionizing group.
Claim 7
Dependent Claim
24 words
The process of claim 1, wherein the polycation polymer is a polyelectrolyte which has a main chain and branched chains having quaternary ammonium groups.
Claim 8
Dependent Claim
17 words
The process of claim 1, wherein the solvent is water, a water compatible solvent or mixtures thereof.
Claim 9
Dependent Claim
34 words
The process of claim 1, wherein a solution of the polycation polymer is admixed with a solution of the alkali silicate at a concentration of 0.01 to 30 wt% at 0° to 90° C.
Claim 10
Dependent Claim
17 words
The process of claim 1, wherein the pH of the reaction solution ranges from 9.5 to 14.
Claim 11
Dependent Claim
13 words
An organic-inorganic polyion complex prepared by the process set forth in claim 1.
References Cited (Backward Citations)
US2411899A
Cited
US3969334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |