US20120101223A1 - Rheology modifier - Google Patents
Rheology modifier Download PDFInfo
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- US20120101223A1 US20120101223A1 US13/274,429 US201113274429A US2012101223A1 US 20120101223 A1 US20120101223 A1 US 20120101223A1 US 201113274429 A US201113274429 A US 201113274429A US 2012101223 A1 US2012101223 A1 US 2012101223A1
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- urethane
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- 0 N#CO*N1C(=O)N(*N=C=O)C(=O)N(*OC#N)C1=O.N#CO*NC(=O)N(*N=C=O)C(=O)N*N=C=O Chemical compound N#CO*N1C(=O)N(*N=C=O)C(=O)N(*OC#N)C1=O.N#CO*NC(=O)N(*N=C=O)C(=O)N*N=C=O 0.000 description 2
- MMLUYUWQJZCNOR-UHFFFAOYSA-N O=C=NCN1C(=O)N(CN=C=O)C(=O)N(CN=C=O)C1=O.[C-]#[N+]OC1CC(C)(C)CC(C)(CN2C(=O)N(CC3(C)CC(C#[N+][O-])CC(C)(C)C3)C(=O)N(CC3(C)CC(C#[N+][O-])CC(C)(C)C3)C2=O)C1 Chemical compound O=C=NCN1C(=O)N(CN=C=O)C(=O)N(CN=C=O)C1=O.[C-]#[N+]OC1CC(C)(C)CC(C)(CN2C(=O)N(CC3(C)CC(C#[N+][O-])CC(C)(C)C3)C(=O)N(CC3(C)CC(C#[N+][O-])CC(C)(C)C3)C2=O)C1 MMLUYUWQJZCNOR-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/7806—Nitrogen containing -N-C=0 groups
- C08G18/7843—Nitrogen containing -N-C=0 groups containing urethane groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/2815—Monohydroxy compounds
- C08G18/282—Alkanols, cycloalkanols or arylalkanols including terpenealcohols
- C08G18/2825—Alkanols, cycloalkanols or arylalkanols including terpenealcohols having at least 6 carbon atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/725—Combination of polyisocyanates of C08G18/78 with other polyisocyanates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
- C08G18/792—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/83—Chemically modified polymers
- C08G18/831—Chemically modified polymers by oxygen-containing compounds inclusive of carbonic acid halogenides, carboxylic acid halogenides and epoxy halides
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/04—Thixotropic paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
Definitions
- the present invention relates to hydrophobically modified urethane polymers, which are used as rheology modifiers in waterborne coatings formulations.
- Rheology modifiers are used in waterborne coatings formulations to control viscosity over a wide shear rate range. They may be associative (they associate with the dispersed phase) or non-associative (they thicken the water phase). Associative thickeners may be derived from natural products such as hydrophobically modified cellulose ethers, or prepared from synthetic polymers such as hydrophobically modified ethylene oxide urethane (HEUR) polymers.
- HEUR hydrophobically modified ethylene oxide urethane
- HEUR polymers and their preparation can be found in US 2009/0318595 A1, which describes forming a combination of linear and branched HEUR polymers by reacting a polyglycol, a hydrophobic alcohol, a diisocyanate, and a triisocyanate together in a one-pot reaction.
- Rheology modifiers are typically classified as either low shear rate viscosity builders (Stormer viscosity builders, also known as KU viscosity builders) or high shear rate viscosity builders (ICI builders). It is desirable to increase ICI viscosity and the efficiency of ICI building rheology modifiers without concomitant increase in KU viscosity because such increase limits the formulator's ability to add a KU building rheology modifier to the formulation.
- Stormer viscosity builders also known as KU viscosity builders
- ICI builders high shear rate viscosity builders
- HEUR polymers ACRYSOLTM 5000 and ACRYSOLTM 6000 rheology modifiers exhibit ICI viscosities of 1.75 and 2.40 respectively and KU viscosities of 79.3 and 109.7 respectively in an acrylic semi-gloss white paint. It would be advantageous to obtain a hydrophobically modified urethane polymer formulation with an increased ICI/KU viscosity ratio in comparison to these known rheology modifiers.
- the present invention is a composition comprising a hydrophobically modified alkylene oxide polyurethane characterized by having a M w of from 50,000 to about 150,000 Daltons and a polydispersity of 2.5 to about 5.0.
- the present invention is a process comprising the steps of:
- R 2 is a C 4 -C 30 -alkyl, -aryl, or -aralkyl group
- R 3 is H or a C 4 -C 30 -alkyl, -aryl, or -aralkyl group
- R 4 is a C 4 -C 30 -alkyl, -aryl, or -aralkyl group
- Y a C 2 -C 8 -alkylene group
- W is N or P
- x is an integer from 0 to 200
- Z is O or NH.
- the polymer prepared by the process of the present invention has an improved ICI/KU viscosity balance over a polymer prepared using the same reagents and proportions by a standard 1-pot process.
- FIG. 1 illustrates a size exclusion chromatographic trace of a comparative HEUR composition.
- FIG. 2 illustrates a size exclusion chromatographic trace of a HEUR composition of the present invention.
- FIG. 3 illustrates an overlay of the molecular weight distributions of the comparative HEUR composition and the HEUR composition of the present invention.
- the present invention is a composition comprising a hydrophobically modified alkylene oxide polyurethane characterized by having a M w of from 50,000 to about 150,000 Daltons and a polydispersity of 2.5 to about 5.0.
- hydrophobically modified alkylene oxide polyurethane composition of the present invention is characterized, in part, by hydrophilic polyalkylene oxide groups, examples of which include hydrophilic polyethylene oxide, hydrophilic polyethylene oxide/polypropylene oxide copolymers, and hydrophilic polyethylene oxide/polybutylene oxide copolymers.
- a preferred hydrophobically modified alkylene oxide polyurethane is a hydrophobically modified ethylene oxide polyurethane (HEUR).
- the hydrophobically modified alkylene oxide polyurethane composition is further characterized by urethane groups that link the polyalkylene oxide groups, preferably polyethylene oxide groups.
- the composition comprises a mixture of linear and branched polymers.
- hydrophobically modified alkylene oxide polyurethane composition is further characterized by inclusion of pendant hydrophobic capping groups, which are characterized by either of the following formulas:
- R 2 is a C 4 -C 30 -alkyl, -aryl, or -aralkyl group
- R 3 is H or a C 4 -C 30 -alkyl, -aryl, or -aralkyl group
- R 4 is a C 4 -C 30 -alkyl, -aryl, or -aralkyl group
- Y a C 2 -C 8 alkylene group
- W is N or P
- x is an integer from 0 to 200
- Z is O or NH.
- the composition of the present invention has a M w of from 70,000 to 90,000 Daltons and a polydispersity of 2.9 to about 3.3.
- the composition of the present invention has a M w of from 110,000 to 140,000 Daltons and a polydispersity of 4.2 to about 4.4.
- the present invention is a process comprising the steps of:
- R 2 is a C 4 -C 30 -alkyl, -aryl, or -aralkyl group
- R 3 is H or a C 4 -C 30 -alkyl, -aryl, or -aralkyl group
- R 4 is a C 4 -C 30 -alkyl, -aryl, or -aralkyl group
- Y a C 2 -C 8 alkylene group
- W is N or P
- x is an integer from 0 to 200
- Z is O or NH.
- a stoichiometric excess of a water-soluble polyalkylene glycol is contacted with a polyisocyanate branching agent under conditions to form a poly-hydroxyethylene oxide urethane with unreacted polyethylene glycol.
- a water-soluble polyalkylene glycol refers to water-soluble polyethylene oxides, water-soluble polyethylene oxide/polypropylene oxide copolymers, water-soluble polyethylene oxide/polybutylene oxide copolymers, and polyethylene oxide/polypropylene oxide/polybutylene oxide terpolymers.
- propylene oxide refers to either a polymer having —(OCH 2 CH- 2 CH 2 )— and/or —(OCH(CH 3 )CH 2 )— repeating groups.
- Preferred water-soluble polyalkylene oxides are polyethylene glycols, particularly polyethylene glycols having a weight average molecular weight in the range of from 4000, more preferably from 6000, and most preferably from 7000, to 20,000, more preferably to 12,000 and most preferably to 9000 Daltons.
- polyethylene glycol is PEG 8000, which is commercially available as CARBOWAXTM 8000 Polyethylene Glycol (a trademark of The Dow Chemical Company (“Dow”) or an affiliate of Dow, Midland, Mich.).
- polyisocyanate branching agent is a compound containing at least three isocyanate groups.
- examples of a preferred class of polyisocyanate branching agents include cyanurate trimers and biuret trimers, which are characterized by the following formulas:
- R is a C 4 -C 30 -alkylene group, more particularly a C 4 -C 20 -alkylene group.
- alkylene group refers to a biradical saturated or partially saturated hydrocarbyl group that is linear-, branched-, or cycloaliphatic or a combination thereof.
- suitable cyanurate trimers which are preferred, include HDI isocyanurate (trimer), and IPDI isocyanurate (trimer). The structures of these cyanurate compounds are illustrated:
- isocyanurate trimers generally include lower levels of oligomers (pentamers, heptamers, etc.) that impart higher order isocyanate functionality to the compound. Accordingly, the term “isocyanate trimer” may include the trimer by itself or as a mixture of trimer and other oligomers.
- a stoichiometric excess of the polyalkylene glycol is advantageously contacted with the polyisocyanate branching agent in the presence of a catalyst designed to promote the coupling of the hydroxyl and isocyanate groups.
- Suitable catalysts include tin catalysts such as dibutyltin dilaurate and dibutyltin diacetate.
- the reaction is carried out under conditions designed to ensure complete or substantially complete consumption of the isocyanate groups.
- the polyisocyanate branching reagent is conveniently added to a pre-dried mixture of the polyalkylene glycol and optionally a non-interfering solvent with a relatively high boiling point such as toluene.
- the mole equivalent:mole equivalent ratio of polyethylene glycol:polyisocyanate branching agent is preferably at least 2:1, more preferably at least 3:1, and most preferably at least 5:1, and preferably not greater than 20:1, more preferably not greater than 10:1.
- the resultant mixture of the unreacted polyalkylene glycol and the branched poly-hydroxyalkylene oxide urethane is contacted with a difunctional linking agent under conditions sufficient to form a branched urethane polymer containing hydroxyl-reactive end groups, generally at a temperature in the range of 80 to 120° C. and over a period of 1 to 3 hours.
- a difunctional linking agent refers to a C 4 -C 20 diisocyanate, an epihalohydrin, or a gem-dihalide, or combinations thereof.
- Diisocyanates which are preferred, may be aliphatic or aromatic diisocyanates, or combinations thereof.
- aliphatic refers to saturated or partially unsaturated linear-, branched-, or cycloaliphatic, or combinations thereof.
- suitable diisocyanates include 1,4-tetramethylene diisocyanate, 1,6-hexamethylene diisocyanate, 2,2,4-trimethyl-1,6-diisocyanatohexane, 1,10-decamethylene diisocyanate, 4,4′-methylenebis(isocyanatocyclohexane), 1,4-cyclohexylene diisocyanate, isophorone diisocyanate, m- and p-phenylene diisocyanate, 2,6- and 2,4-toluene diisocyanate, xylene diisocyanate, 4-chloro-1,3-phenylene diisocyanate, 4,4′-biphenylene diisocyanate, 4,4′-methylene diphenylisocyanate, 1,5-naphthylene di
- Epihalohydrins include epichlorohydrin and epibromohydrin; gem-dihalides include gem-dichlorides and gem-dibromides such as dichloromethane, dibromomethane, 1,1-dichloroethane, 1,1-dibromoethane, 1,1-dichlorotoluene, and 1,1-dibromotoluene.
- the difunctional linking agent is conveniently added to the pot containing the branched poly-hydroxyalkylene oxide urethane/polyalkylene glycol mixture at sufficient quantities and under conditions to ensure complete or substantially complete conversion of the hydroxyl groups to urethane groups. Thus, a stoichiometric excess of the difunctional linking agent is conveniently used in this step.
- capping agent refers to a compound of either of the following formulas:
- Capping agents include linear, branched, or cycloaliphatic alcohols having at least 6 carbon atoms, aromatic alcohols, or aralkyl alcohols, examples of which include as n-hexanol, n-octanol, n-decanol, n-dodecanol, n-hexadecanol, 2-ethyl-1-hexanol, 2-butyl-1-octanol, 2-butyl-1-decanol, 2-hexyl-1-octanol, 2-hexyl-1-decanol, isononyl alcohol, isodecyl alcohol, isoundecyl alcohol, nonyl phenol, cyclohexanol, and benzyl alcohol; alkylamines, such as hexylamine, octylamine, and decyl
- the capping agent is a C 8 -C 20 linear or branched alcohol; in another aspect, the capping agent is a C 8 -C 20 -alcohol-C 2 -C 4 — alkoxylate, preferably a C 8 -C 20 -alcohol-ethoxylate.
- Volatile compounds are advantageously removed by convenient means such as rotary evaporation and the desired polymer is isolated. It has surprisingly been discovered that multi-step approach described herein gives a polymer with superior KU and ICI viscosities as compared to polymers prepared in a single pot reaction.
- the coating composition according to the present invention may further include one or more of the following additives: Solvents; fillers; pigments, such as titanium dioxide, mica, calcium carbonate, silica, zinc oxide, milled glass, aluminum trihydrate, talc, antimony trioxide, fly ash, and clay; polymer encapsulated pigments, such as polymer-encapsulated or partially encapsulated pigment particles such as titanium dioxide, zinc oxide, or lithopone particles; polymers or polymer emulsions adsorbing or bonding to the surface of pigments such as titanium dioxide; hollow pigments, including pigments having one or more voids; dispersants, such as aminoalcohols and polycarboxylates; surfactants; defoamers; preservatives, such as biocides, mildewcides, fungicides, algaecides, and combinations thereof; flow agents; leveling agents; and additional neutralizing agents, such as hydroxides, amines, ammonia, and carbonates.
- Solvents such as
- the coatings composition may include polymer-encapsulated opacifying pigment particles comprising i) opacifying pigment particles, such as titanium dioxide particles, having a diameter in the range of 100 nm to 500 nm and an index of refraction of at least 1.8; ii) an encapsulating polymer, and iii) a polymeric dispersant for the encapsulated opacifying pigment particles and the polymer.
- opacifying pigment particles such as titanium dioxide particles, having a diameter in the range of 100 nm to 500 nm and an index of refraction of at least 1.8
- an encapsulating polymer e.g., polymeric dispersant for the encapsulated opacifying pigment particles and the polymer.
- a polymeric dispersant for the encapsulated opacifying pigment particles and the polymer e.g., polymeric dispersant for the encapsulated opacifying pigment particles and the polymer.
- the coating composition may include polymer-encapsulated
- FIG. 1 illustrates an overlay of the SEC scan of the comparative sample and a 10-point calibration curve generated from narrow molecular weight polyethylene oxide standards.
- FIG. 1 shows polymers eluting over retention times in the range of about 15 min to about 25 min
- the weight average molecular weight (M w ) of this comparator was calculated to be 40,000 Daltons and its polydispersity 1.8.
- FIG. 2 illustrates an overlay of the SEC for the example of the present invention and a 10-point calibration curve generated from narrow molecular weight polyethylene oxide standards.
- FIG. 2 shows polymers eluting over retention times in the range of about 14 mM to about 25 min.
- the M w of the example of the present invention was calculated to be 78,000 Daltons and its polydispersity 3.1.
- FIG. 3 illustrates an overlay of molecular weight distribution plots of the comparative sample (dotted plot) and Example 1 (continuous plot), obtained on three Asahipak columns (300 ⁇ 7.5 mm ID), pore size identified as: GF-310HQ, GF-510HQ, GF-710HQ, particle size 9 ⁇ m in a mobile phase of 100 mM NH 4 Ac in MeOH using R 1 detection.
- a latex paint composition was prepared by combining the following components:
- Kronos 4311 titanium dioxide slurry 262.8 g Water 180.1 g Ethylene glycol 24.3 g Ropaque Ultra plastic pigment 49.7 g Rhoplex SG-30 binder 420.9 g Drewplus L-475 defoamer 4.0 g Texanol coalescent 19.2 g Triton X-405 surfactant 2.5 g Total 963.5 g Kronos 4311 is a product of Kronos Incorporated (Chelmsford, MA, USA). Drewplus L-475 defoamer is a product of Ashland Specialty Chemical Company. TRITON TM X-405 stabilizer, ROPAQUE TM Ultra opaque polymer and RHOPLEX TM SG-30 emulsion are products of The Dow Chemical Company or its subsidiaries.
- the formulated paint was obtained by adding aqueous thickener dispersion and water to Pre-paint #1 (963.5 g). To maintain constant solids of the fully formulated paint, the combined weight of added thickener and water was 49.5 g. The density of the fully formulated paint was 1013 pounds/100 gal (1.2 Kg/1). The pH of the fully formulated paints was in the range of 8.5 to 9.0.
- Formulated paints were made by the following method. To 963.5 g Pre-paint #1 were added slowly aqueous thickener dispersion (40.0 g) and water (9.5 g). The mixture was stirred for 10 min. The aqueous thickener dispersions were made by adding dried solid thickener wax (10.0 g), methyl-beta-cyclodextrin (available from Wacker-Chemie Gmbh, Kunststoff, Germany, 1.0 g of a 50% solution) and water (39.0 g) to a 50 mL plastic centrifuge tube. The tubes were capped and mounted on a rotator for continuous tumbling over 48 h until the aqueous thickener dispersions were homogeneous. Following a 24 h equilibration at room temperature, the thickened paint was stirred for 1 min on a lab mixer before measuring viscosity values.
- KU viscosity is a measure of the mid-shear viscosity as measured by a Krebs viscometer.
- the Krebs viscometer is a rotating paddle viscometer that is compliant with ASTM-D562.
- KU viscosity was measured on a Brookfield Krebs Unit Viscometer KU-1+ available from Brookfield Engineering Labs (Middleboro, Mass., USA).
- ICI viscosity is the viscosity, expressed in units of poise, measured on a high shear rate, cone and plate viscometer known as an ICI viscometer.
- An ICI viscometer is described in ASTM D4287. It measures the viscosity of a paint at approximately 10,000 sec ⁇ 1 . ICI viscosities of paints were measured on a viscometer manufactured by Research Equipment London, Ltd (London, UK). An equivalent ICI viscometer is the Elcometer 2205 manufactured by Elcometer, Incorporated (Rochester Hills, Mich., USA). The ICI viscosity of a paint typically correlates with the amount of drag force experienced during brush application of the paint.
- ICI and KU viscosities were found to be 1.90 Poise and 87.0 Krebs units respectively.
- M w as measured by SEC was found to be 40,000 with M w /M n polydispersity equal to 1.9.
- Example 1 Although the nature and amounts of the starting materials used to make the polymers of Comparative Example 1 and Example 1 are the same, the ICI/KU viscosity profile is clearly superior for Example 1, the product prepared by the process of the present invention, as evidenced by the higher ICI/KU ratio for the product of the present invention.
- Samples were prepared in 100 mM NH 4 Ac in MeOH (Optima grade from Fisher) at concentration of about 2 mg/g. Samples were brought into solution by shaking on the mechanical shaker overnight at ambient temperature. Sample solutions were filtered using 0.45 ⁇ m PTFE filters. Samples appeared to be soluble (checked visually) and no resistance was observed during filtration process.
- the calibration curve was generated using polyethylene oxide standards with the following M p s: 615, 1500, 3930, 12140, 23520, 62100, 116300, 442800, 909500 and 1258000. the polydispersities of these standards ranged from about 1.04 to 1.16.
- the standards were obtained commercially from Polymer Laboratories, part of Agilent, part# PL2080-0201. SEC separations were performed with a mobile phase of 100 mM NH 4 Ac in MeOH (Optima grade from Fisher) @ 1 mL/min
- the SEC column set used in this study was composed of three Asahipak columns (300 ⁇ 7.5 mm ID) packed with highly cross-linked polar gel. The column pore size was identified as: GF-310HQ, GF-510HQ and GF-710HQ, the particle size was 9 ⁇ m and the columns were purchased from Shoko America (Torrance, Calif.).
- M w and polydispersity values and ranges refer to the M w and polydispersities generated for samples under the SEC conditions described above.
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US20140135468A1 (en) * | 2012-11-12 | 2014-05-15 | Elementis Specialties, Inc. | Processes for the preparation of rheology modifiers |
US20190202964A1 (en) * | 2016-07-05 | 2019-07-04 | Rohm And Haas Company | Compositions comprising polyether-urethane-urea additives for block resistance and open time |
US10450472B2 (en) | 2016-09-01 | 2019-10-22 | Rohm And Haas Company | Alkylene oxide urethane associative thickener modified with a hydrophobic oligomer |
US20210040291A1 (en) * | 2019-08-09 | 2021-02-11 | Rohm And Haas Company | Formulation of a rheology modifier and a thermoplastic-epoxy hybrid latex |
US11021566B2 (en) | 2016-10-20 | 2021-06-01 | Coatex | Rheology-modifying urethane compound |
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JP5542897B2 (ja) | 2011-12-14 | 2014-07-09 | ローム アンド ハース カンパニー | レオロジー調整剤 |
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CA2948961C (en) | 2015-12-28 | 2023-12-05 | Dow Global Technologies Llc | Polyether-urethane-urea additives for block resistance and open time |
WO2019005290A1 (en) | 2017-06-30 | 2019-01-03 | Dow Global Technologies Llc | AQUEOUS WATER CLARIFIER COMPOSITION STABILIZED AT LOW TEMPERATURE AND METHODS OF USE |
EP3823904A4 (en) * | 2018-07-20 | 2022-04-20 | Hercules LLC | WATER-SOLUBLE OR DISPERSIBLE COMPOSITION |
FR3087774B1 (fr) * | 2018-10-26 | 2021-06-25 | Coatex Sas | Preparation continue de polyurethanes ou de polyurees |
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CN115087710B (zh) * | 2020-03-31 | 2024-03-01 | 科莱恩国际有限公司 | 疏水改性聚氨酯增稠剂及其制备方法 |
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- 2011-09-28 EP EP12180132.8A patent/EP2527382B1/en active Active
- 2011-09-28 EP EP11183190A patent/EP2444432B1/en active Active
- 2011-10-03 AU AU2011227001A patent/AU2011227001B2/en active Active
- 2011-10-17 US US13/274,429 patent/US20120101223A1/en not_active Abandoned
- 2011-10-24 CN CN201410041982.9A patent/CN103834158B/zh active Active
- 2011-10-24 KR KR1020110108834A patent/KR101310077B1/ko active IP Right Grant
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US20140135468A1 (en) * | 2012-11-12 | 2014-05-15 | Elementis Specialties, Inc. | Processes for the preparation of rheology modifiers |
EP2759555A1 (en) * | 2012-11-12 | 2014-07-30 | Elementis Specialties, Inc. | Processes for the preparation of rheoloy modifiers |
US9260559B2 (en) * | 2012-11-12 | 2016-02-16 | Elementis Specialties, Inc. | Processes for the preparation of rheology modifiers |
US20190202964A1 (en) * | 2016-07-05 | 2019-07-04 | Rohm And Haas Company | Compositions comprising polyether-urethane-urea additives for block resistance and open time |
US10654964B2 (en) * | 2016-07-05 | 2020-05-19 | Dow Global Technologies Llc | Compositions comprising polyether-urethane-urea additives for block resistance and open time |
US10450472B2 (en) | 2016-09-01 | 2019-10-22 | Rohm And Haas Company | Alkylene oxide urethane associative thickener modified with a hydrophobic oligomer |
US11021566B2 (en) | 2016-10-20 | 2021-06-01 | Coatex | Rheology-modifying urethane compound |
US20210040291A1 (en) * | 2019-08-09 | 2021-02-11 | Rohm And Haas Company | Formulation of a rheology modifier and a thermoplastic-epoxy hybrid latex |
US11629242B2 (en) * | 2019-08-09 | 2023-04-18 | Rohm And Haas Company | Formulation of a rheology modifier and a thermoplastic-epoxy hybrid latex |
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CN103834158A (zh) | 2014-06-04 |
JP2012092304A (ja) | 2012-05-17 |
EP2527382B1 (en) | 2016-11-16 |
KR101310077B1 (ko) | 2013-09-25 |
EP2444432B1 (en) | 2013-02-13 |
AU2011227001A1 (en) | 2012-05-10 |
CN102532474B (zh) | 2014-12-24 |
AU2011227001B2 (en) | 2013-10-24 |
US8907008B2 (en) | 2014-12-09 |
CN103834158B (zh) | 2016-10-05 |
JP5813431B2 (ja) | 2015-11-17 |
KR20120048476A (ko) | 2012-05-15 |
EP2527382A1 (en) | 2012-11-28 |
US20140011967A1 (en) | 2014-01-09 |
CN102532474A (zh) | 2012-07-04 |
EP2444432A1 (en) | 2012-04-25 |
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