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US 4,055,529 AGranted
Adhesive joint dressing compositions containing an alkali thickenable polymer
AssigneeTile Council of America, Inc.
InventorDavid R. Burley
Life of this patent
Estimating the term…
Abstract
Adhesive dressing compositions are disclosed which are useful in restoring and improving adhesive joint surfaces such as grout surfaces in ceramic tile installations by easy, efficient methods. Such compositions form stain resistant, water repellent, washable coverings which adhere to most adhesive surfaces and further have properties of preferential adherability to certain adhesive surfaces compared with adjacent adherend surfaces. The compositions comprise a polymer in the form of an emulsion, an alkali-thickenable polymer, an alkaline material and water with other components including pigments, plasticizers and solvents.
Claims30
a dressing composition capable of selectively adhering to substrate surfaces and forming on adherable substrate surfaces a non-porous, strain resistant, washable layer when cured, said composition comprising
- i. a high molecular weight polymer in the form of an emulsion which is alkali-thickenable whereby it is capable of substantially increasing the viscosity of the composition as the pH of the composition is increased above nertral pH;
- ii. a high molecular weight polymer in the form of an emulsion which is not alkali-thickenable;
- iii. an alkaline agent wherein the cation or cations of said agent are mono-valent, said alkaline agent present in sufficient amounts to cause the alkali-thickenable polymer to increase the viscosity of the composition;
- and
- iv. water;
- wherein both of said polymers are room temperature curable and form water resistant films when cured and wherein the dispersion of at least one of said polymers becomes destabilized in the presence of polyvalent cations whereby its emulsion phase is broken and the droplets of the polymer no longer remain suspended in the liquid phase and wherein the total weight of polymer solids is in the range of 5-60% by weight of the total composition, the volatile components comprising at least 20% by weight of the total composition and the composition having a thixotropic rheology with a viscosity greater than about 50,000 cps at 70.degree. F.
3 more elements
A dressing composition capable of selectively adhering to substrate surfaces and forming on adherable substrate surfaces a non-porous, stain resistant, washable layer when cured, said composition comprising
- i. a high molecular weight polymer in the form of an emulsion which is not alkali-thickenable and which emulsion is destabilized in the presence of polyvalent cations whereby the droplets of the polymer no longer remain suspended in the liquid phase, said polymer selected from the group consisting of polymers of carboxylic acids, polymers of esters of carboxylic acids, and copolymers of a carboxylic acid or ester of a carboxylic acid with one or more monomers from the group consisting of carboxylic acids, esters of carboxylic acids, acrylonitriles, acrylamides, aromatic compounds and alkenes, said polymer characterized as being room-temperature curable and forming a water-resistant film when cured;
- ii. a high molecular weight polymer which is alkali-thickenable whereby it is capable of substantially increasing the viscosity of the composition as its pH is increased above neutral pH, said polymer in the form of a colloidal dispersion or emulsion of polymer particles which dispersion or emulsion is destabilized in the presence of polyvalent cations, said polymer selected from the group consisting of polymers of carboxylic acids, polymers of esters of carboxylic acids, and copolymers of a carboxylic acid or ester of a carboxylic acid with one or more monomers from the group consisting of carboxylic acids, esters of carboxylic acids, acrylonitriles, acrylamides, aromatic compounds and alkenes, said polymer characterized as being room-temperature curable and forming a water-resistant film when cured;
- iii. an alkaline agent wherein the cation or cations of said agent are mono-valent, said alkaline agent present in sufficient amounts to cause the alkalithickenable polymer to increase the viscosity of the composition;
- and
- iv. water;
- wherein the total weight of polymer solids is in the range of 5-60% by weight of the total composition, and wherein the composition has a thixotropic rheology and a viscofity which is greater than about 50,000 cps at 70.degree. F.
3 more elements
A tile grout dressing composition capable of selectively adhering to grout surfaces and forming on adherable grout surfaces a non-porous, stain resistant, washable layer when cured, said composition comprising
- i. a high molecular weight polymer in the form of an emulsion which is not alkali-thickenable, which emulsion is destabilized in the presence of polyvalent cations, said polymer selected from the group consisting of polymers of carboxylic acids, polymers of esters of carboxylic acids, and copolymers of a carboxylic acid or ester of a carboxylic acid with one or more monomers from the group consisting of the carboxylic acids, esters of carboxylic acids, acrylonitriles, acrylamides, aromatic compounds and alkenes, said polymer characterized as being room-temperature curable and forming a water-resistant film when cured;
- ii. an alkali-thickenable high molecular weight polymer capable of substantially increasing the viscosity of the composition as its pH is increased above neutral pH, said polymer in the form of a colloidal dispersion or emulsion of polymer particles which dispersion or emulsion is destabilized in the presence of polyvalent cations, said polymer selected from the group consisting of polymers of carboxylic acids, polymers of esters of carboxylic acids, and copolymers of a carboxylic acid or ester of a carboxylic acid with one or more monomers from the group consisting of the carboxylic acids, esters of carboxylic acids, acrylonitriles, acrylamides, aromatic compounds and alkenes, said polymer characterized as being room temperature curable and forming a water-resistant film when cured;
- iii. an alkaline agent wherein the cation or cations of said agent are mono-valent and said alkaline agent is present in sufficient amounts to cause the alkali-thickenable polymer to increase the viscosity of the composition;
- iv. water;
- and
- v. a solvent having a vapor pressure at room temperature lower than that of water and capable of inhibiting the time rate of film formation of the composition and present in an amount sufficient to allow adequate time for the composition to be suitably applied to a substrate;
- wherein the total weight of polymer solids is in the range of 5-60% by weight of the total composition, at least 5% by weight of the total polymer solids is the polymer in the form of an emulsion, and the volatile components comprise at least 20% by weight of the composition, and wherein the composition has a thixotropic rheology and a viscosity which is greater than about 50,000 cps at 70.degree. F.
4 more elements
Dependencies are inferred from the claim text.