Claims
- 1. A latex of a water-insoluble organic polymer which is electrically non-conductive when in a dry state having particles which are stabilized in aqueous dispersion by cationic groups of which a substantial portion are isothiouronium groups having nitrogen atoms with covalent bonds only to carbon atoms; said latex having a pH in the range of from about 2 to about 12 and having a particle size of from about 500 Angstroms to about 10,000 Angstroms.
- 2. The latex of claim 1 in which the total amount of cationic groups is from about 0.02 milliequivalent to about 0.4 milliequivalent per gram of polymer.
- 3. The latex of claim 1 which has a pH of from about 6 to about 10.
- 4. The latex of claim 1 in which some of the cationic groups are provided by sulfonium cations.
- 5. The latex of claim 1 in which the isothiouronium group has the formula ##STR6## wherein R.sup.2 and R.sup.5 individually are alkyl or hydroxyalkyl having from 1 to 4 carbon atoms, R.sup.3 and R.sup.4 individually are alkyl or hydroxyalkyl having from 1 to 4 carbon atoms or are combined in one divalent radical having from 2 to 3 carbon atoms and Z.sup.- is a water-soluble anion.
- 6. The latex of claim 1 in which the isothiouronium group is provided by an adsorbed isothiouronium surfactant.
- 7. The latex of claim 6 in which the isothiouronium surfactant is dodecylbenzyltetramethylisothiouronium chloride.
- 8. The latex of claim 1 in which the isothiouronium groups are provided by a copolymerized monomer having an isothiouronium group of the formula ##STR7## wherein R' is a monovalent organic radical having polymerizable ethylenic unsaturation, R.sup.2 and R.sup.5 individually are alkyl or hydroxyalkyl having from 1 to 4 carbon atoms, R.sup.3 and R.sup.4 individually are alkyl or hydroxyalkyl having from 1 to 4 carbon atoms or are combined in one divalent radical having from 2 to 3 carbon atoms and Z.sup.- is a water-soluble anion.
- 9. The latex of claim 8 in which the isothiouronium monomer is copolymerized with one or more neutral electrically non-conductive, emulsion polymerizable, ethylenically unsaturated monomers.
- 10. The latex of claim 8 in which the monomer having an isothiouronium groups is vinylbenzyltetramethylisothiouronium chloride.
- 11. The latex of claim 1 in which the isothiouronium compound has the formula ##STR8## wherein R' is a long chain, monovalent hydrophobic radical having from 8 to 25 carbon atoms, R.sup.2 and R.sup.5 individually are alkyl or hydroxyalkyl having from 1 to 4 carbon atoms, R.sup.3 and R.sup.4 individually are alkyl or hydroxyalkyl having from 1 to 4 carbon atoms or are combined in one divalent radical having from 2 to 3 carbon atoms and Z.sup.- is a water-soluble anion.
CROSS-REFERENCES TO RELATED APPLICATIONS
This application is a continuation-in-part of application Ser. No. 392,700, filed August 29, 1973, now U.S. Pat. No. 3,882,009.
US Referenced Citations (7)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
392700 |
Aug 1973 |
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