Low-Voc Emulsion Polymer Coating Compositions
AssigneeBASF SE
InventorsRobert Shane Porzio, Cheng-Le Zhao, Michael J. Anchor
Life of this patent
Estimating the term…
Abstract
An aqueous latex coating composition and method of making an aqueous latex coating composition that comprises at least one oligomeric ethylene glycol derivative having the structure RO—(CH2—CH2—O—)n—H, at least one latex polymer, and water, wherein R is H or C1-C4 alkyl and preferably H, and n is from 3 to 9, preferably from 3 to 8, and more preferably from 3 to 6. The oligomeric ethylene glycol derivative functions as both a coalescing solvent and freeze-thaw stabilizer without contributing to the VOC content of the composition.
Claims35
An aqueous coating composition, comprising:
- (a) at least one oligomeric ethylene glycol derivative having the following structure:
- RO—(CH2—CH2—O—)n—H
- wherein R is H or C1-C4 alkyl and n is from 3 to 9;
- (b) at least one latex polymer;
- and
- (c) water.
A latex paint composition, comprising:
- (a) at least one oligomeric ethylene glycol derivative having the following structure:
- RO—(CH2—CH2—O—)n—H
- wherein R is H or C1-C4 alkyl and n is from 3 to 9;
- (b) at least one latex polymer;
- (c) at least one inorganic pigment;
- and,
- (d) water.
A VOC-free aqueous coating composition, consisting essentially of low-volatility components, comprising:
- (a) at least one oligomeric ethylene glycol derivative having the following structure:
- RO—(CH2—CH2—O—)n—H
- wherein R is H or C1-C4 alkyl and n is from 3 to 9;
- (b) at least one latex polymer;
- (c) optionally at least one inorganic pigment;
- (d) optionally one or more additives;
- and
- (e) water.
An aqueous coating composition, comprising
- at least one oligomeric ethylene glycol derivative having the following structure:
- RO—(CH2—CH2—O—)n—H
- wherein R is H or C1-C4 alkyl and n is from 3 to 9;
- at least one latex polymer;
- and
- water;
- said composition being substantially free of additional coalescing solvents and freeze-thaw stabilizers.
A coated substrate comprising
- a substrate;
- and
- a dried coating composition coated upon the substrate, said dried coating comprising at least one oligomeric ethylene glycol derivative having the structure RO—(CH2—CH2—O—)n—H
- wherein R is H or C1-C4 alkyl and n is from 3 to 9, and at least one latex binder.
A method of preparing an aqueous coating composition, comprising the step of:
- preparing a polymer latex binder using emulsion polymerization;
- and
- combining the binder with an ethylene glycol derivative having the following structure:
- RO—CH2—CH2—O—)n—H
- wherein R is H or C1-C4 alkyl and n is from 3 to 9, to form an aqueous composition.
Dependencies are inferred from the claim text.