Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
1999-03-05
2001-05-08
Sanders, Kriellion (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
Reexamination Certificate
active
06228913
ABSTRACT:
This invention is concerned with a process of improving the leveling of a floor polish composition and a floor polish composition having improved leveling.
Floor polish compositions comprise floor polish vehicle compositions together with one or more other useful floor polish ingredients such as alkali soluble resins, plasticizers, waxes, preservatives, dispersing agents, coalescents, leveling agents and optical brighteners.
Leveling agents are added to floor polish compositions to improve the appearance of the polish once it has been applied on a floor. Such agents are well known in the art and include, for example, fluorochemicals (see David A Butman & Myron T Pike, Chemical Times and Trends, The Journal of Chemical Specialties Manufacturers Association, January 1981, long chain alcohols (see U.S. Pat. No. 4,460,734), esters such as isobutyl isobutyrate, terpenol compounds such as pine oil, and organic phosphates such as tributoxy ethyl phosphate. It is an object of the present invention to improve the leveling properties of a floor polish composition, which composition may already include a conventional leveling agent.
A compound which offers dual functionality in a floor polish composition can be very desirable to the polish formulator: such compounds can be used advantageously in floor polish compositions either to supplement one or more other components to obtain higher performance polishes or to substitute, in whole or in part, one or more other components in a polish composition without loss of performance. Accordingly, it is a further object of the present invention to identify a compound which can offer not only improved leveling properties in a floor polish composition but also some other property pertinent to a polish composition.
Some solvents are known to possess dual functionality, in that they are capable of contributing other useful properties to a floor polish. For example, in U.S. Pat. No. 4,371,398, there is disclosed a polish composition comprising (1) a liquid water-insoluble polyolefin formed by polymerizing alpha-olefins of the formula RCH═CH2 where R is a hydrocarbon group, (2) an emulsifier for said polyolefin, (3) a solvent, and (4) water. It is taught in the reference that any suitable solvent can be employed in the polish provided it achieves the desired results without substantial deleterious effects. Hydrocarbons such as mineral spirits, kerosene, xylenes and carbitol type solvents are identified in the reference as examples of such suitable solvents. Other compounds such as isobutyl isobutyrate and pine oil are also disclosed as being suitable solvents in the polish. Isobutyl isobutyrate and pine oil are disclosed as leveling agents.
Optical brighteners are added to floor polish compositions to improve the brightness or cleanliness of the polish once it has been applied on a floor. Examples of optical brighteners are disclosed in EP-A-0696625 and U.S. Pat. No. 4,371,398, and include distyrylbiphenyl- and stilbene-derivatives, sold by Ciba-Geigy under the TINOPAL trade name; and 2,2′-(2,5-thiophenediyl)bis[5-tert-butylbenzoxazole], available from Ciba-Geigy as UVITEX OB. Also, it is suggested in U.S. Pat. No. 4,371,398 that coumarin derivatives such as 4-methyl-7-diethylamine coumarin may be used as an optical brightener in a polish composition, but no polish composition comprising such a derivative is specifically disclosed.
Leveling of electrodeposited nickel is known to be improved in the presence of coumarin (see, for example, Investigation of reflectivity and structure of electrodeposited nickel during electrolysis; A. T. Vagramyan and N. K. Baraboshkina; Plating; August 1967; pages 930 to 940).
In accordance with the present invention there is provided a process of improving the leveling of a floor polish composition comprising an aqueous suspension or dispersion of water insoluble emulsion polymer, wherein the process comprises adding coumarin and/or a derivative thereof to said composition in an amount of from about 0.05 to about 10% by weight of polymer solids in the composition. Preferably, the coumarin and/or derivative thereof is present in an amount of from 0.1 to 5% by weight of said polymer solids.
It has been found that floor polish compositions comprising coumarin and/or a derivative thereof have improved leveling properties over similar polish compositions but which comprise no leveling agent. It has also been found that the leveling properties of a polish composition which already comprises a leveling agent can be improved through the addition of coumarin and/or a derivative thereof, even when present in very low quantities. This finding is particularly surprising since hitherto these compounds have only been suggested for incorporation into floor polish compositions to improve brightness (U.S. Pat. No. 4,371,398). Indeed, we have been able to confirm that floor polish compositions comprising coumarin and/or coumarin derivatives have improved leveling and improved brightness, thereby enabling the floor polish formulator to provide a high performance polish composition.
In another aspect of the present invention, there is provided a floor polish composition comprising coumarin and/or a coumarin derivative in an amount of from 0.05 to 10%, preferably 0.1 to 5%, by weight of polymer solids in said composition.
In yet another aspect of the present invention, there is provided the use in a floor polish composition of coumarin and/or a derivative thereof in an amount of 0.05 to 10%, preferably 0.1 to 5%, by weight of polymer solids in said composition to improve leveling of said polish.
Preferably the coumarin or coumarin derivative has the following general structure:
where R is H or a (C1 to C12) alkyl or a (C3-C1) cycloaliphatic group or a (C1 to C12) alkyl halide group or a carboxy group and R
2
is H or a hydroxy (—OH) or an amine (—NH
2
) or a (C1 to C12) alkyl amine or a cycloaliphatic amine group. Preferably, the coumarin or coumarin derivative are selected from the group consisting of coumarin, 7-diethylamino-4-methylcoumarin, 7-hydroxy-4-methylcoumarin, 7-amino-4-methylcoumarin, {7-(dimethylamino)-2,3-dihydrocyclopenta-[c][1]benzopyran-4(1H)-one}, {7-(dimethylamino)-4-(trifluoromethyl)coumarin){, {2,3,6,7-tetrahydro-9-(trifluoromethyl)-1H,5H,11H-[1]benzopyrano[6,7,8-ij]qui nnolizin-11-one}, coumarin-3-carboxylic acid, 3-[2-(diethylamino)ethyl]-7-hydroxy-4-methylcoumarin, and dihydrocoumarin. The most preferred coumarin derivative useful in the present invention is a compound of the formula:
The floor polish compositions of the present invention preferably comprise an aqueous suspension or dispersion of one or more water insoluble emulsion polymers containing acid functional residues and, optionally, polyvalent metal ion or complex crosslinking agents. For example, such compositions are disclosed in U.S. Pat No. 3,328,325, U.S. Pat. No. 3,467,610, U.S. Pat. No. 3,554,790, U.S. Pat. No. 3,573,329, U.S. Pat. No. 3,711,436, U.S. Pat. No. 3,808,036, U.S. Pat. No. 4,150,005, U.S. Pat. No. 4,517,330, U.S. Pat No. 5,149,745, U.S. Pat No. 5,319,018, U.S. Pat. No. 5,574,090 and U.S. Pat. No. 5,676,741. Preferably, the water insoluble (emulsion copolymer has a Tg of at least 10° C., more preferably at least 40° C. calculated using the Fox Equation: 1/Tg=W
A
/Tg
A
+W
B
/Tg,
B
where Tg is the glass transition temperature (
O
K, Tg
A
and Tg,
B
are the glass transition temperatures of the homopolymers A and B, and W
A
and W
B
represent the weight fractions of the components A and B of the copolymer, respectively (T. G. Fox, Bull. Am. Phys. Soc. 1, 123 (1956)).
The water insoluble polymer is preferably formed from a monomer mix comprising 0% or up to 70%, preferably 10% to 50%, by weight of at least one vinyl aromatic monomer; 3% to 50%, preferably 5% to 20%, by weight of at least one acidic monomer; and no more than 97%, preferably 30% to 97% and more preferably 30% to 70%, by weight of at least one monomer selected fro
Lavoie Alvin Charles
Owens Joseph Michael
Tysak Theodore
Rohm and Haas Company
Sanders Kriellion
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