FIELD: organic chemistry, chemical technology, polymers.
SUBSTANCE: invention describes a method for preparing water-soluble copolymers and homopolymers of vinylamine by radical (co)polymerization of vinyl formamide as a monomer comprising vinylamine with protecting formyl group. Method is carried out in aqueous, alcoholic or aqueous-alcoholic solution in the concentration of monomer 10-50 wt.-% in the presence of 0.1-2.0 wt.-% of ammonia (of the total mass of monomer). Protecting formyl group is removed at heating the prepared (co)polymer in aqueous or aqueous-alcoholic solution of strong inorganic acid in the concentration of acid 0.12-30 wt.-% and in the molar ratio acid : monomer link of vinyl formamide = (0.1-5.0):1. Invention provides preparing (co)polymers of vinylamine with regular structure in the broad range of molecular masses and high yield.
EFFECT: improved preparing method.
1 tbl, 9 ex
| Title | Year | Author | Number |
|---|---|---|---|
| MICROPARTICLES OF COPOLYMER CONTAINING VINYLAMINE AS ADDITIVES IN PAPERMAKING | 2012 |
|
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| WATER-SOLUBLE SULPHONATED POLYMERS WITH INTRINSIC ANTIVIRAL ACTIVITY AND METHOD FOR PRODUCTION THEREOF | 2023 |
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| APPLICATION OF WATER-SOLUBLE COPOLYMERS AS ACTIVE SUBSTANCES IN COSMETIC COMPOSITIONS | 1997 |
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| METHOD OF PRODUCING WATER-SOLUBLE COPOLYMERS OF N-VINYL AMIDES CONTAINING ALDEHYDE GROUPS | 2015 |
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| METHOD OF PRODUCING SYNTHETIC METAL-POLYMER COMPLEXES OF RADIOISOTOPE GALLIUM-68 | 2015 |
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| METHOD OF PRODUCING MONODISPERSED SYNTHETIC POLYMER LATEX WITH AMINO GROUPS ON SURFACE OF PARTICLES | 2008 |
|
RU2381235C1 |
| 0 |
|
SU451717A1 |
