Plasticized aqueous alkali-soluble resin coating compositions with reduced odor and pH
First Claim
1. In an aqueous thermoplastic coating composition comprising water, at least one alkali-soluble polymeric film forming agent and a plasticizing agent, the improvement wherein at least a portion of the plasticizing agent is formed from a weak carboxylic acid.
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Abstract
This invention provides an alkali-soluble resin coating composition, more particularly an aqueous floor polish composition, comprising water, at least one alkali-soluble polymeric film forming agent, preferably solubilized in water using ammonia or an ammonia derivative, a polyvalent metal crosslinking agent, and a plasticizing agent, wherein the improvement comprises at least a portion of the plasticizing agent being formed of a weak carboxylic acid, such as a tertiary alkyl monocarboxylic acid, or an unsaturated primary carboxylic acid, each acid having an average of from about 6 to 30 carbon atoms per molecule, or combinations thereof. Such compositions have one or more improved properties such as greatly reduced ammonia odor as compared with the same compositions using only conventional plasticizers such as tributoxyethyl phosphate, reduced pH of the composition to increase ease of handling the composition, improved or equal coating film leveling, and improved gloss development and mark resistance with good self-sensitivity for less buildup upon recoating.
30 Citations
34 Claims
- 1. In an aqueous thermoplastic coating composition comprising water, at least one alkali-soluble polymeric film forming agent and a plasticizing agent, the improvement wherein at least a portion of the plasticizing agent is formed from a weak carboxylic acid.
- 22. A method of improving the physical properties of an aqueous thermoplastic coating composition, comprising water, at least one alkali-soluble polymeric film forming agent comprising acrylic polymers, styrene/acrylic polymers, polyester polymers, polyurethane polymers, polyether polymers, polyaldehyde polymers, polycarbonates, or polyamides, a polyvalent metal crosslinking agent, and a plasticizing agent, wherein the improvement comprises replacing at least a portion of the plasticizing agent with a weak carboxylic acid selected from the group consisting of aromatic carboxylic acids, unsaturated carboxylic acids, water-soluble carboxylic acids, water-insoluble carboxylic acids, and combinations thereof.
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28. A method for forming a film forming composition comprising the steps of:
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a) adding an amount of an alkaline compound to an amount of water to form a solution;
b) adding an amount of at least one alkali-soluble polymeric film forming agent to the solution;
c) adding an amount of at least one weak carboxylic acid to the solution; and
d) adjusting the nonvolatile weight percent of the solution. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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Specification