Polymeric emulsion containing amphoteric surfactant and its application in architectural primers
AssigneeBehr Process Corporation
InventorsDeepak MISHRA, Hemant NAIR, Niranjan GORIWALE, Jigui LI, Ming-Ren TARNG
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Abstract
A method for forming an acrylic emulsion includes a step of forming pre-emulsion by combining a monomer composition with an amphoteric surfactant in water and then polymerizing the pre-emulsion by combining the pre-emulsion with a radical initiator in a reactor to form a reaction mixture. The monomer composition includes one or more monomers selected from the group consisting of (meth)acrylic acid monomers and (meth)acrylic monomers, and combinations thereof. An acrylic emulsion formed by the method is also provided.
Claims24
A method comprising:
- a) forming a pre-emulsion by combining a monomer composition with an amphoteric surfactant in water, the monomer composition including one or more monomers selected from the group consisting of (meth)acrylic acid monomers and (meth)acrylic monomers, and combinations thereof, and
- b) polymerizing the pre-emulsion by combining the pre-emulsion with a radical initiator in a reactor to form a reaction mixture.
An acrylic emulsion comprising:
- water;
- an acrylic polymer or copolymer;
- and
- an amphoteric surfactant present in an amount from 0.5% to 5% of the weight of the first acrylic polymer or copolymer.
Dependencies are inferred from the claim text.