An adhesive is provided that will automatically signal that it has cured a sufficient amount for objects, such as flooring, to be installed on the adhesive. The cure-signaling adhesive can be a one component high strength adhesive composition which can signal that it has cured a sufficient amount an
An adhesive is provided that will automatically signal that it has cured a sufficient amount for objects, such as flooring, to be installed on the adhesive. The cure-signaling adhesive can be a one component high strength adhesive composition which can signal that it has cured a sufficient amount and developed sufficient viscosity and tackiness (pressure sensitivity) for flooring or other objects to be installed on the adhesive. The adhesive can be formulated to change pH during curing and to signal sufficient curing by including a color change pH indicator in the adhesive. The adhesive can be formulated to have low or substantially no VOC emissions and can be formulated with bio-sourced ingredients.
대표청구항▼
1. An adhesive composition suitable for use as a construction adhesive, comprising: the combination produced by combining effective amounts and proportions of a cross-linkable hydrocarbon resin, a fugitive alkali agent or fugitive antioxidant, a cross linking agent, and an acid/base color change ind
1. An adhesive composition suitable for use as a construction adhesive, comprising: the combination produced by combining effective amounts and proportions of a cross-linkable hydrocarbon resin, a fugitive alkali agent or fugitive antioxidant, a cross linking agent, and an acid/base color change indicator;wherein the combination is formulated to provide an adhesive composition that can be applied to a substrate and will have a first application hue, and cure to a shear strength of over 3 psi and have a noticeably lighter intermediate hue within 30 minutes, and which will cure on the substrate to provide an adhesive of shear strength over 40 psi and be effective as a flooring adhesive and change hue as it cures to signal that cross linking is progressing, from the intermediate hue to a lighter cured hue of the substantially cured adhesive. 2. The adhesive composition of claim 1, wherein the indicator is phenolphthalein or bromothymol blue. 3. The adhesive composition of claim 1, wherein the indicator is phenolphthalein, added as 0.5-1.5% of the composition. 4. The adhesive composition of claim 1, wherein the indicator is bromothymol blue, added as 1.5-3.5% of the composition. 5. The adhesive composition of claim 1, and comprising a color chart displaying the hue of the adhesive corresponding to the color of the intermediate hue for installing flooring material on the adhesive. 6. The adhesive composition of claim 1, wherein the adhesive is formulated as a one component adhesive. 7. The adhesive composition of claim 1, wherein the adhesive composition comprises a resin component comprising a C-5 hydrocarbon component and a C-9 hydrocarbon component. 8. The adhesive composition of claim 7, wherein the C-9 hydrocarbon comprises styrene, vinyl toluene, indene, methyl indene, or alpha methyl styrene. 9. The adhesive composition of claim 1, wherein the composition comprises linseed oil, tung oil or sunflower oil. 10. The adhesive composition of claim 1, comprising ammonia, monoethanol amine, or triethanol amine. 11. The adhesive composition of claim 1, comprising an oxime. 12. The adhesive composition of claim 1, comprising a metal napthanate. 13. The adhesive composition of claim 1, wherein the composition is formulated to substantially lack VOCs that are emitted during curing. 14. The adhesive of claim 1, comprising a drying oil component, which comprises about 1-20% of the composition. 15. The adhesive of claim 1, wherein the composition is formulated to change hue to the cured hue within 60 minutes. 16. An adhesive composition and color chart combination, comprising: the combination produced by combining effective amounts and proportions of an oil; a hydrocarbon resin component; a fugitive alkali agent or anti-oxidant; a cross linking agent; and an acid/base color change indicator, to provide an adhesive that can be applied to a substrate and which will cure on the substrate and noticeably change from a darker to a lighter hue as it develops a strength of over 3 psi within 30 minutes and cure to a shear strength of over 40 psi; anda color chart depicting at least one hue and instructions explaining to apply flooring to the adhesive while the adhesive has the depicted hue. 17. The adhesive composition of claim 16, wherein the indicator is phenolphthalein or bromothymol blue and the color change is from a dark hue to a light hue. 18. The adhesive composition of claim 17, wherein the resin component comprises a C-5 hydrocarbon component and a C-9 hydrocarbon component. 19. The adhesive of claim 16, wherein the adhesive is formulated to exhibit an open time of 60 minutes. 20. The adhesive of claim 16, comprising a polymer derived from a plant or animal source, with carboxyl, acrylic, methacylate or epoxide functionality. 21. A method of constructing a floor, comprising applying a layer of the adhesive of claim 1 to a substrate, the adhesive having an application hue, waiting for the adhesive to change color to a predetermined working hue, which is lighter than the application hue, but darker than the hue of the cured adhesive, to signal a selected level of shear strength, then applying flooring material to the adhesive while it has the working hue and permitting the adhesive to cure, to adhere the flooring material to the substrate with the layer of adhesive. 22. The method of claim 21, wherein the color change is from pink to a lighter shade of pink or blue to a lighter shade of blue. 23. The method of claim 21, comprising the step of comparing the adhesive color to a color chart and waiting to adhere the flooring material until the color of the adhesive matches the color indicated in the chart. 24. An adhesive composition suitable for use as a construction adhesive, comprising: the combination produced by combining effective amounts and proportions of a cross-linkable hydrocarbon resin; a fugitive alkali agent or antioxidant; a cross linking agent; wherein the combination is formulated to provide an adhesive composition that can be applied to a substrate and which will cure on the substrate and signal, as it cures that cross linking is progressing and wherein the hue of the adhesive corresponds to a color chart, which associates the hue of the adhesive with a directive to apply flooring to the adhesive while the adhesive has an indicated hue. 25. The composition of claim 24, wherein signal is a change in hue. 26. The composition of claim 25, wherein the signal is the development of a noticeably lighter hue. 27. The method of claim 21, wherein the working hue is indicated on a chart and the flooring material is applied to the curing adhesive when the hue of the adhesive matches the hue indicated on the color chart.
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이 특허에 인용된 특허 (4)
Shuman Ralph J. (Needham MA) Burns Barbara J. (Auburn MA), Adhesive composition which changes from colored to colorless upon application to a substrate.
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