Claims
- 1. Tridimensional cross-linked random copolymers, insoluble in water, containing in copolymerized form:
- (a) 25% to 98% by weight of N-[tris(hydroxymethyl)methyl]acrylamide or N-[tris(hydroxymethyl)methyl]methacrylamide or a mixture of these two compounds;
- (b) 2% to 50% by weight of one or more monomers possessing two or several polymerizable ethylenic double bonds and free of anionic or cationic functional groups; and
- (c) 0.1% to 50% by weight of one or more monomers corresponding to the formula: ##STR8## in which R.sub.1 is a hydrogen atom, an alkyl group containing 1 to 4 carbon atoms, an SO.sub.3 H or an SO.sub.3 M group, M indicating an alkali metal, X.sub.1 is a single bond, an oxygen atom or a --CH.sub.2 --, ##STR9## --SO--, --SO.sub.2 -- or p-phenylene group, p, p', q and q' are whole numbers from 0 to 4, Z and Z' are oxygen atoms or sulfur atoms or ##STR10## --SO--, --SO.sub.2 --, --CH.dbd.N--, --NH--SO.sub.2 --, --CHOH--, --C.tbd.C-- or ##STR11## groups, R.sub.2 indicating a hydrogen atom or a methyl or methoxy group, and Y represents a monosubstituted amino, disubstituted amino, pyrimidinyl, guanidyl or purinyl group, salified or not, a quaternary ammonium, SO.sub.3 H or SO.sub.3 M group, M being an alkali metal.
- 2. Copolymers according to claim 1 which contain in copolymerized form 0.2% to 15% by weight of monomers (c).
- 3. Copolymers according to claim 2 in which the monomer or monomers (b) correspond to one of the formulae: ##STR12## in which R is a hydrogen atom or a methyl group, R' is a hydrogen atom or a hydroxymethyl group, X is a hydrogen atom or an OH group, and n and m are whole numbers from 0 to 6.
- 4. Copolymers according to claim 1 in which the monomer or monomers (b) correspond to one of the formulae: ##STR13## in which R is a hydrogen atom or a methyl group, R' is a hydrogen atom or a hydroxymethyl group, X is a hydrogen atom or an OH group, and n and m are whole numbers from 0 to 6.
- 5. Copolymers according to claim 1, 2, 3 or 4 in which the monomer or monomers (c) corresponds or correspond to the formula: ##STR14## in which R.sub.1 is a hydrogen atom, an alkyl group containing 1 to 4 carbon atoms, an SO.sub.3 H or an SO.sub.3 M group, M indicating an alkali metal, X.sub.1 is a single bond, an oxygen atom or a --CH.sub.2 --, ##STR15## --SO--, --SO.sub.2 -- or p-phenylene group, p, p', q, q' are whole numbers from 0 to 4, Z and Z' are oxygen atoms or sulfur atoms or ##STR16## --SO--, --SO.sub.2 --, --CH.dbd.N--, --NH--SO.sub.2 --, --CHOH--, --C.tbd.C-- or ##STR17## groups, R.sub.2 indicating a hydrogen atom or a methyl or methoxy group, and Y represents a monosubstituted amino, disubstituted amino, pyrimidinyl, guanidyl or purinyl group, salified or not, a quaternary ammonium, SO.sub.3 H or SO.sub.3 M group, M being an alkali metal.
- 6. Copolymers according to claim 1 in which the monomer or monomers (b) are selected from the group consisting of N,N'-methylene-bis-acrylamide, N,N'-ethylene-bis-methacrylamide and hexamethylene-bis-acrylamide.
- 7. Copolymers according to claim 5 in which, in formula (III) of monomers (c), Y represents a group ##STR18## R.sub.3, R.sub.4 and R.sub.5 representing alkyl groups containing 1 to 3 carbon atoms and A.sup..crclbar. representing the chloride, bromide or iodide anion.
- 8. Copolymers according to claim 7, in which the monomer (c) is selected from:
- vinylsulfonic acid and its alkali metal salts;
- diethylaminoethyl methacrylate and acrylate and their hydrochlorides;
- dimethylaminoethyl methacrylate and acrylate and their hydrochlorides;
- N-(diethylaminoethyl)acrylamide and N-(dimethylaminopropyl)acrylamide and their hydrochlorides;
- [(3-methacrylamido)propyl]trimethylammonium chloride; and
- [(3-methacryloyloxy)propyl]trimethylammonium chloride.
- 9. Aqueous gels which contain 2% to 60% by weight of a copolymer as defined in claim 1.
- 10. Aqueous gels according to claim 9, which are in the form of beads having a diameter of 1 .mu.m to 600 .mu.m.
- 11. Aqueous gels according to claim 10, in which the diameter of the beads is between 40 .mu.m and 80 .mu.m.
- 12. The process which comprises utilizing the gels as defined in claim 9, 10 or 11 in the separation of natural or synthetic substances by ion exchange.
Priority Claims (1)
Number |
Date |
Country |
Kind |
80 10382 |
May 1980 |
FRX |
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Parent Case Info
This is a continuation of application Ser. No. 258,130, filed Apr. 27, 1981, and now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3700635 |
Brust et al. |
Oct 1972 |
|
3886125 |
Chromecek |
May 1975 |
|
4192784 |
Brown et al. |
Mar 1980 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
40124 |
Nov 1981 |
EPX |
2378808 |
Jul 1977 |
FRX |
Continuations (1)
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Number |
Date |
Country |
Parent |
258130 |
Apr 1981 |
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