READILY DISSOLVABLE SOLID NONIONIC SYNTHETIC ASSOCIATIVE THICKENERS
The presently disclosed and claimed inventive concept(s) relates to a particulate product. The particulate product comprises a nonionic synthetic associative thickener NSAT) rheology modifier and a dissolution promotion water soluble additive. The NSAT rheology modifier is selected from the group consisting of hydrophobically-modified ethoxylated urethane (HEUR), hydrophobically-modified polyethylene glycol and hydrophobically-modified polyacetal-polyether (HMPAPE). The particulate product is incorporated into a waterborne paint formula.
1 . A particulate product comprising a nonionic synthetic associative thickener (NSAT) rheology modifier and a dissolution promotion water soluble additive.
2 . The particulate product of claim 1 , wherein the NSAT rheology modifier is selected from the group consisting of hydrophobically-modified ethoxylated urethane (HEUR), hydrophobically-modified polyethylene glycol (HMPEG), and hydrophobically-modified polyacetal-polyether (HMPAPE).
3 . The particulate product of claim 1 , wherein the dissolution promotion water soluble additive has a molecular weight (Mw) less than about 2000 Daltons.
4 . The particulate product of claim 1 , wherein the dissolution promotion water soluble additive is selected from the group consisting of a surfactant and a cyclodextrin.
5 . The particulate product of claim 4 , wherein the surfactant is isodecyl ethoxylate.
6 . The particulate product of claim 4 , wherein the cyclodextrin is selected from the group consisting of α-cyclodextrin, β-cyclodextrin, and γ-cyclodextrin.
7 . The particulate product of claim 6 , wherein the β-cyclodextrin is methyl-β-cyclodextrin.
8 . The particulate product of claim 1 , wherein the dissolution promotion water soluble additive comprises a sugar.
9 . The particulate product of claim 8 , wherein the sugar is selected from the group consisting of sucrose, fructose, glucose, and sorbitol.
10 . The particulate product of claim 1 , further comprising an additional rheology modifier.
11 . The particulate product of claim 10 , wherein the additional rheology modifier comprises a cellulose ether.
12 . The particulate product of claim 11 , wherein the cellulose ether is selected from the group consisting of hydroxyethyl cellulose (HEC), carboxymethyl cellulose (CMC), methyl cellulose (MC), methylhydroxyethyl cellulose (MHEC), ethylhydroxyethyl cellulose (EHEC), methylhydroxylpropyl cellulose (MHPC), and hydrophobically-modified derivatives thereof.
13 . The particulate product of claim further comprising a functional ingredient selected from the group consisting of dispersants, wetting agents, biocides, antifoams, and coalescents.
14 . The particulate product of claim 1 , wherein less than about 5% by weight of the particulate product is retained on 1.18 mm sieve (No. 16) measured according to ASTM C136-06 Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates.
15 . The particulate product of claim 1 , further comprising a coating composition selected from the group consisting of a hydrophobic polymer, a hydrophilic polymer, and an amphiphilic polymer.
16 . A method for making a particulate product comprising a nonionic synthetic associative thickener (NSAT) rheology modifier and a dissolution promotion water soluble additive, comprising the steps of:
a) obtaining the NSAT rheology modifier and the dissolution promotion water soluble additive;
b) mixing the NSAT rheology modifier and the dissolution promotion water soluble additive; and
producing the particulate product from step h).
17 . The method of claim 16 , wherein the step c) is conducted using spray dryers, disc pastillators, drum flakers, or grinders.
18 . The method of claim 16 , further comprising step d) cryogenic grinding.
19 . A method for incorporating a particulate product comprising a nonionic synthetic associative thickener (NSAT) rheology modifier and a dissolution promotion water soluble additive into an aqueous system comprising a water-insoluble polymer, comprising the steps of:
a) obtaining the particulate product according to claim 16 ; and
b) mixing the particulate product and the aqueous system until the particulate product dissolves,
wherein less than 5% by weight of the particulate product is retained on 1.18 mm sieve (No. 16) measured according to ASTM C136-06 Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates, and the NSAT rheology modifier is selected from the group consisting of hydrophobically-modified ethoxylated urethane (HEUR), hydrophobically-modified polyethylene glycol (HMPEG), and hydrophobically-modified polyacetal-polyether (HMPAPE).
20 . A method for incorporating a particulate product comprising a nonionic synthetic associative thickener (NSAT) rheology modifier and a dissolution promotion water soluble additive into an aqueous system comprising a water-insoluble polymer, comprising the steps of:
a) obtaining the particulate product according to claim 16 ;
b) adding the particulate product to the aqueous system in the absence of the water-insoluble polymer to obtain a mixture;
c) grinding the mixture; and
d) adding the water-insoluble polymer to the mixture until the particulate product dissolves,
wherein the NSAT rheology modifier is selected from the group consisting of hydrophobically-modified ethoxylated urethane (HEUR), hydrophobically-modified polyethylene glycol (HMPEG), and hydrophobically-modified polyacetal-polyether (HMPAPE).