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US 12,528,904 B2Granted
Heat-stabilising agent
AssigneeCoatex
InventorsBenoit Magny, Yves Matter, Denis Ruhlmann, Jean Marc Suau
Life of this patent
Estimating the term…
Abstract
Polyurethane heat-stabilizing agents may help resist temperature changes and preparations of an aqueous composition which may be resistant to temperature changes due to the use of such an agent (P). The viscosity may be thermally stabilized by such an aqueous composition in a wide temperature range and for many shear gradient values.
Claims17
A heat-stabilizing agent (P), comprising:
- a polyurethane (P1) comprising, in polymerized form:
- a diisocyanate compound (A1), a polyisocyanate compound (A2), or combination thereof in a range of from 0.1 to 28 wt. %;
- a polyhydroxylated compound (B) in a range of from 2 to 99.5 wt. %;
- and
- a monoisocyanate compound (C1) of formula I, a monohydroxylated compound (C2) of formula II, a compound (C3) of formula III, or a combination thereof, in a range of from 0.4 to 70 wt. %,
- T1-NCO (I), T2-OH (II), R1-(OE)a-(OP)b-R2 (III)
- wherein T1 and T2 are independently a straight C30-C36-alkyl group or a branched C30-C36-alkyl group,
- a and b are independently 0 or an integer or decimal less than 150, a or b being different from 0,
- EO is independently a CH2CH2O group,
- PO is independently a combination of (i) at least one CH2CH2O group with (ii) at least one group chosen CH(CH3)CH2O and/or CH2CH(CH3)O,
- R1 is a group comprising at least one labile hydrogen atom, and
- R2 is independently a straight C30-C36-alkyl group or a branched C30-C36-alkyl group,
- or
- a polyurethane (P2) prepared in the absence of any diisocyanate compound, comprising, in reacted form:
- a polyisocyanate compound (A2) in a range of from 0.1 to 28 wt. %;
- a polyhydroxylated compound (B) in a range of from 2 to 99.5 wt. %;
- and
- a monoisocyanate compound (C1) of formula I, a monohydroxylated compound (C2) of formula II, a compound (C3) of formula III, or a combination thereof, in a range of from 0.4 to 70 wt. %;
- and
- wherein the agent (P), when added to an aqueous solution at from 0.1 to 2 wt. %, relative to total composition weight, creates an aqueous composition, the aqueous composition having, for a temperature variation in a range of from 5 to 50° C., a decrease in viscosity measured for a shear gradient in a range from 0.1 to 100 s−1, of less than 70% relative to an initial viscosity value of the aqueous composition.
17 more elements
A heat-stabilizing agent (P), comprising:
- a polyurethane (P1) comprising, in polymerized form:
- isophorone diisocyanate (IPDI) at from 0.1 to 28 wt. %;
- polyethylene glycol with a molecular mass (Mw) of 8,000 g/mol at from 2 to 99.5 wt. %;
- and
- a C32-alkyl ethoxylated alcohol with 25 equivalents of ethylene oxide at from 0.4 to 70 wt. %,
- wherein the agent (P), when added to an aqueous solution at from 0.1 to 2 wt. %, relative to total composition weight, creates an aqueous composition, the aqueous composition having, for a temperature variation of from 5 to 50° C., a decrease in viscosity measured for a shear gradient at from 0.1 to 100 s−1, is less than 70% relative to an initial viscosity value of the aqueous composition.
3 more elements
Dependencies are inferred from the claim text.