Environmentally Friendly Colorant Compositions and Latex Paints/Coatings
a technology of colorant compositions and latex paints, applied in the field of colorant compositions and aqueous latex paints, can solve the problems of reducing the amount of environmentally undesirable substances in paints and other coatings, reducing the sag resistance of paints, etc., and achieves moderate or good sag resistance, good sag resistance, and good sag resistan
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example 1
Preparation of Copolymer Surfactant Free of APE
[0156]The emulsion polymerization was carried out in a four-neck flask under nitrogen purge. The reaction flask was equipped with a condenser, a thermometer, an agitator and a feeding pump. The flask was immersed in a temperature controlled water bath maintained at a constant temperature within about ±0.1° C. of the set point. Table 1 shows the ingredients used for the copolymer surfactant.
TABLE 1Ingredients for Preparation of Copolymer Surfactant (1)ComponentParts (by weight)Initial Charge in ReactorDeionized water48.5Sodium dodecyl benzene sulfonate (22% w / w)0.3Monomer EmulsionDeionized water17.3Sodium dodecyl benzene sulfonate (22%)0.7Methacrylic acid11.6Vinyl acetate13.9Butyl acrylate4.2Tristyrylphenylpoly(ethyleneoxy) methacrylate (60%)0.4Diallyl phthalate0.03Initiator Solution 1Sodium persulfate0.15Deionized water1.4Initiator Solution 2Sodium persulfate0.15Deionized water1.4Total100
example 2
Preparation of Copolymer Surfactant (2)
[0158]The reactant composition was the same as in Example 3 of U.S. Pat. No. 7,402,627, except ammonium nonylphenyl ether persulfate, an APE surfactant, was replaced with an APE-free surfactant, sodium tridecyl ethoxy sulfate (RHODAPEX EST-30 from Rhodia Inc.), as shown in Table 2.
[0159]The same procedures and conditions as in Example 1 were used.
TABLE 2Ingredients for Preparation of Copolymer Surfactant (2)ComponentParts (by weight)Initial Charge in ReactorDeionized water49.4sodium tridecyl ethoxy sulfate (30% w / w)0.1Monomer EmulsionDeionized water13.9sodium tridecyl ethoxy sulfate (30%)0.8Abex 20201.2Methacrylic acid9.8Vinyl acetate9.8Ethyl methacrylate9.8Tristyrylphenylpoly(ethyleneoxy) methacrylate (60%)1Initiator Solution 1Ammonium persulfate0.03Deionized water1.3Initiator Solution 2Deionized water2sodium tridecyl ethoxy sulfate (30%)0.5Abex 20200.4Ammonium persulfate0.04Rinse Deionized water0.9Total100
[0160]The surfactant ABEX 2020 was a ...
example 3
Preparation of Copolymer Surfactant Free of APE
[0161]The monomer composition was the same as in Example 4 of U.S. Pat. No. 7,402,627, except a di-functional monomer, diacrylate (Sartomer SR610), was used as a crosslinking monomer. Ammonium nonylphenyl ether persulfate (APE surfactant) and Abex 2020, per Example 4 of U.S. Pat. No. 7,402,627, were replaced with sodium dodecyl benzene sulfonate (22% w / w) and RHODAFAC RS-610A-25 (polyoxyethylene tridecyl etherphosphate, Rhodia Inc.).
[0162]The same procedures and conditions as for Example 1 were used in preparing the copolymer surfactant. Thus, after monomer feeding was complete, the temperature of the reaction flask was maintained at 80-85° C. for one hour. The reactor was then cooled to 60-65° C. and chaser mixtures were fed to the reactor over 30 minutes. It was then cooled to room temperature. The copolymer surfactant product, in the form of a latex or emulsion, was recovered, with a solids content of about 30%.
TABLE 3Ingredients for...
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