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US 2013/0253117 A1Published application
Weakly ionic polymers for an aqueous suspension of mineral fillers for paper coating colors intended for ink jet printing
AssigneeCoatex
InventorsMurielle GUILLOT, Olivier Guerret
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Abstract
The present invention provides weakly ionic polymeric additives that, when used in aqueous suspensions of commercial mineral fillers (dispersed with an anionic polymer), enable the introduction of organic or mineral salts in significant quantities without causing a destabilization of the medium. The suspension are useful in the formulation of a paper coating color designed for an application of the ink-jet type.
Claims16
A method to prepare an aqueous suspension, the suspension, comprising:
- a mineral filler;
- at least one anionic dispersant;
- and
- at least one mineral or organic salt;
- the method, comprising:
- adding at least one water-soluble polymer obtained by copolymerization of
- a) 5% to 40% based on total weight of the polymer of (meth)acrylic acid, and
- b) 60% to 95% based on total weight of the polymer of at least one monomer of formula (I):
- R-(EO)m—(PO)n—R′ (I)
- wherein
- R is a polymerizable group selected from the group consisting methacrylate and methacrylurethane groups,
- EO and PO respectively are ethylene-oxy and propylene-oxy units, which are in block, alternating or random order,
- m and n are integers, at least one of which is non-zero and are between 0 and 100,
- R′ is hydrogen or an alkyl group with from 1 to 4 carbon atoms.
11 more elements
An aqueous suspension, comprising:
- at least one mineral filler,
- an anionic dispersant,
- at least one mineral or organic salt, and
- water-soluble polymer obtained by copolymerization of
- a) 5% to 40% based on total weight of the polymer of (meth)acrylic acid, and
- b) 60% to 95% based on total weight of the polymer of at least one monomer of formula (I):
- R-(EO)m—(PO)n—R′ (I)
- wherein
- R is a polymerizable group selected from the group consisting methacrylate and methacrylurethane groups,
- EO and PO respectively are ethylene-oxy and propylene-oxy units, which are in block, alternating or random order,
- m and n are integers, at least one of which is non-zero and are between 0 and 100,
- R′ is hydrogen or an alkyl group with from 1 to 4 carbon atoms,
- wherein a total solids content of the suspension is from 10 and 80% by weight of the suspension.
10 more elements
Dependencies are inferred from the claim text.