Additive based on water-soluble polymers and uses thereof
AssigneeSnf Group
InventorsRené Hund, Gatien Faucher, Damien Fougerouse
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Abstract
This invention relates to an additive based on (co)polymers resulting from the reaction between at least one dialdehyde compound and at least one complex (co)polymer obtained by polymerization of water-soluble monomers in the presence of at least one host (co)polymer comprising vinylamine functions.
Claims20
An additive based on (co)polymers resulting from the reaction between at least one dialdehyde compound and at least one complex (co)polymer obtained by polymerization of water-soluble monomers in the presence of at least one host (co)polymer comprising vinylamine functions.
A process for preparing an additive based on polymers, comprising the following steps:
- a. preparing at least one base (co)polymer composed of at least one nonionic monomer,
- b. preparing at least one host (co)polymer obtained by what is referred to as Hofmann degradation carried out on at least one base (co)polymer obtained in step a,
- c. preparing at least one complex (co)polymer by polymerization of water-soluble monomers in the presence of at least one host (co)polymer obtained in step b,
- d. preparing an additive resulting from the reaction between at least one dialdehyde and at least one complex (co)polymer obtained in step c.
A process for preparing an additive based on polymers, comprising the following steps:
- a. preparing at least one N-vinylformamide base (co)polymer,
- b. preparing at least one host (co)polymer obtained by at least partial hydrolysis of the N-vinylformamide (co)polymer obtained in step a,
- c. preparing at least one complex (co)polymer by polymerization of water-soluble monomers in the presence of at least one host (co)polymer obtained in step b,
- d. preparing an additive resulting from the reaction between at least one dialdehyde and at least one complex (co)polymer obtained in step c.
Dependencies are inferred from the claim text.