Claims
- 1. The process for the production of silica containing copolymer compositions by the following steps:
- (a) mixing 10 to 50 parts by weight of a hydrated silica compound and 5 to 150 parts by weight of a polyfunctional amine;
- (b) adding slowly 50 parts by weight of a polyfunctional halohydrin compound to said mixture while agitating and keeping the temperature between 20.degree. C. and 70.degree. C.;
- (c) adding 50 to 500 parts by weight of water to the mixture while agitating and keeping the temperature between 20.degree. C. and 70.degree. C. for 30 to 120 minutes, thereby
- (d) producing a silica containing prepolymer;
- (e) adding an alkylene oxide, selected from the group consisting of ethylene oxide, propylene oxide and mixtures thereof, to the prepolymer in an aqueous solution containing about 25% aolids, at a temperature of 45.degree. C. to 70.degree. C., at a pH of 6 to 7, and with the proportion of alkylene oxide being from about 0.5 to 1.5 mols per mol of amino nitrogen atom in the halohydrin-amine-silicate prepolymer, while agitating, and
- (f) maintaining the temperature until the alkylene oxide has reacted.
- 2. The process of claim 1 wherein the polyfunctional amine is selected from the group consisting of alkylenepolyamines, polyalkylenepolyamines, p,p-bisaniline, ammonia and mixtures thereof.
- 3. The process of claim 1 wherein the polyfunctional halohydrin is selected from the group consisting of alphadichlorohydrin, dibromohydrin, di-iodohydrin, epichlorohydrin, epibromohydrin, methyl epichlorohydrin, di-epiodohydrin and mixtures thereof.
- 4. The process of claim 1 wherein the polyfunctional halohydrin is epichlorohydrin.
- 5. The process of claim 1 wherein a bifunctional amine is added in step (a) of claim 1 and is selected from the group consisting of methylamine, ethylamine, propylamine, ethanolamine, N,N'-dimethylenediamine, piperazine, aniline and mixtures thereof, in molar ratio, bifunctional amine to polyfunctional amine varying from 50:1 to 2:1.
- 6. The process of claim 1 wherein a polychlorinated aliphatic compound is added in step (a) of claim 1 in the amount of 10 to 50 parts by weight per 50 parts by weight of the polyfunctional halohydrin.
- 7. The process of claim 1 wherein an organic polyhydroxy compound is added in step (a) of claim 1 in the amount of 10 to 20 parts by weight of the polyfunctional halohydrin.
- 8. The process of claim 1 wherein an alkali compound is added to the aqueous solution, step (c), until the pH is 7 to 12 and the alkali compound is selected from the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate and mixtures thereof.
- 9. The product produced by the process of claim 1.
- 10. The product produced by the process of claim 5.
- 11. The product produced by the process of claim 6.
- 12. The product produced by the process of claim 7.
- 13. The product produced by the process of claim 8.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a divisional of U.S. patent application Ser. No. 938,450, filed Aug. 31, 1978 abandoned, which is a continuation-in-part of my copending application, Ser. No. 732,013, filed Oct. 13, 1976.
US Referenced Citations (6)
Non-Patent Literature Citations (2)
Entry |
Foster, "Sorption Hysteresis", Chemical Abstracts 45, 6894h (1951). |
Ross et al., "The Sorption of Ethylamine on Silica and Silica Xerogel", Chemical Abstracts 64, 13428g (1966). |
Divisions (1)
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Number |
Date |
Country |
Parent |
938450 |
Aug 1978 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
732013 |
Oct 1976 |
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