US5672379A
Expired / Lapsed
US
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Method of producing wear resistant traffic markings
Assignee: Rohm and Haas Co
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Filing: 1996-07-26
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Granted: 1997-09-30
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Expires: 2016-07-26
Abstract
Abstract The present invention is directed to a method of producing wear resistant traffic paint composition. In accordance with the method, a traffic marking of a traffic paint composition having low GPC number average molecular weight latex binder when applied to the road surface exhibits improved wear resistance over those traffic paint compositions having high GPC number average molecular weight latex binders. The wear resistance is further enhanced by modifying the latex polymer used in the composition with acetoacetyl functional pendant moiety and amino silane.
Inventors
- 👤 Donald Craig Schall
- 👤 Alvin Charles Lavoie
- 👤 Francis Joseph Landy
- 👤 Steven Scott Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:38
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/004; C08; C08F; C08F8/00; C08F8/42; C09D133/00; C09D133/04; C09D133/06; C09D133/062; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31855; Y10T428/4935
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
124 words
A method for producing a wear resistant traffic marking on a road surface comprising; applying on said road surface a layer of a traffic paint composition containing a latex binder in an aqueous evaporable carrier, said latex binder having a Tg in the range varying from 0° C. to 60° C., a gel permeation chromatography number average molecular weight in the range varying from 1,000 to less than 30,000; and evaporating said aqueous evaporable carrier from said layer to form said wear resistant traffic marking on said road surface, said layer having a no-pick-up time, as evaluated under ASTM D711-89, varying in the range of from 1 minute to 60 minutes at a relative humidity in the range of from 65 to 90 percent.
Claim 2
Independent Claim
124 words
A method for producing a wear resistant traffic marking on a road surface comprising; applying on said road surface a layer of a traffic paint composition containing a latex binder in an aqueous evaporable carrier, said latex binder having a Tg in the range varying from 0° C. to 60° C., a gel permeation chromatography number average molecular weight in the range varying from 1,000 to less than 30,000; and evaporating said aqueous evaporable carrier from said layer to form said wear resistant traffic marking on said road surface, said layer having a no-pick-up time, as evaluated under ASTM D711-89, varying in the range of from 1 minute to 60 minutes at a relative humidity in the range of from 65 to 90 percent.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein said latex binder is a dispersion of polymer particles in said aqueous evaporable carrier or a polymer dissolved in said aqueous evaporable carrier.
Claim 4
Dependent Claim
48 words
The method of claim 1 further comprising adding a base to said aqueous evaporable carrier to provide said latex binder with an enamine functional pendant moiety, said enamine functional pendant moiety resulting from a reaction of an acetoacetyl functional pendant moiety on said latex polymer with said base.
Claim 5
Dependent Claim
157 words
The method of claim 3 further comprising polymerizing said latex binder from 0.5 to 100 percent by weight of binder solids of an acetoacetyl functional monomer having the following structure: ##STR13## wherein A is either: ##STR14## wherein R 1 is either H, alkyl having 1 to 10 carbon atoms or phenyl, R 2 is either H, alkyl having 1 to 10 carbon atoms or phenyl, halo, CO 2 CH 3 , or CN; wherein R 3 is either H, alkyl having 1 to 10 carbon atoms or phenyl, or halo; wherein R 4 is either alkylene having 1 to 10 carbon atoms or phenylene; wherein R 5 is either alkylene having 1 to 10 carbon atoms or phenylene; wherein a, m, n, and q is either 0 or 1; wherein each of X and Y is either --NH-- or --O--; and wherein B is either A, alkyl having 1 to 10 carbon atoms or phenyl or heterocyclic.
Claim 6
Dependent Claim
44 words
The method of claim 3 wherein said acetoacetyl functional pendant moiety is selected from the group consisting of acetoacetoxyethyl methacrylate, acetoacetoxyethyl acrylate, acetoacetoxypropyl methacrylate, allyl acetoacetate, acetoacetoxybutyl methacrylate, 2,3-di(acetoacetoxy)propyl methacrylate, or combinations there of to add said acetoacetyl functional pendant moiety on said polymer.
Claim 7
Dependent Claim
43 words
The method of claim 3 further comprising adding an aminosilane to said aqueous evaporable carrier wherein said aminosilane is selected from the group consisting of N-methylaminopropyltrimethoxysilane aminoethylaminopropylmethyldimethoxysilane, aminoethylaminopropyltrimethoxysilane, aminopropylmethyldimethoxysilane, aminopropyltrimethoxysilane, polymeric aminoalkylsilicone, aminoethylaminoethylaminopropyl-trimethoxysilane, N-methylaminopropyltrimethoxysilane, aminopropylmethyldimethoxysilane, aminopropyltriethoxysilane, 4-aminobutyltriethoxysilane, oligomeric aminoalkylsilane, and various combinations thereof.
Claim 8
Dependent Claim
80 words
The method of claim 1, 2 or 3 further comprising polymerizing said latex binder from 0.5 to 100 percent by weight of binder solids of an acid functional monomer to provide said binder with an acid number in the range of from 0.1 to 390, said acid functional monomer being selected from the group consisting of phosphoethyl methacrylate, acrylic acid, fumaric acid-monoethyl ester, fumaric acid, itaconic acid, maleic acid, methacrylic acid, fumaric acid-monomethyl ester, methyl hydrogen maleate, and combinations thereof.
Claim 9
Dependent Claim
24 words
The method of claim 1, 2 or 3 further comprising dropping glass beads on said layer to make said traffic marking reflective to light.
Claim 10
Dependent Claim
135 words
The method of claim 3, wherein said traffic paint composition further comprising: (a) a blend of said latex binder with 0 to 20 weight percent based on the total weight of binder solids of a polyfunctional amine, or (b) an amine modified latex binder, or (c) a combination of said blend and said amine modified latex binder, wherein said latex binder and said amine modified latex binder are anionically stabilized, and wherein said aqueous evaporable carrier comprises an amount of a volatile base sufficient to raise the pH of said aqueous evaporable carrier to a point where essentially all of said polyfunctional amine in said blend, or essentially all of said amine modified latex binder, or essentially all of said combination of said blend and said amine modified latex binder is in a deprotonated state.
Claim 11
Dependent Claim
26 words
The method of claim 1, 2 or 3 further comprising contacting said layer with a coagulant to improve the no-pick-up dry time of said traffic marking.
Claim 12
Dependent Claim
148 words
The method of claim 1 or 2, wherein said traffic paint composition further comprising (a) a volatile base added to said aqueous evaporable carrier; and (b) a blend of said latex binder with 0 to 20 weight percent based on the total weight of binder solids of a polyfunctional amine, or (c) an amine modified latex binder, or (d) a combination of said blend and said amine modified latex binder, wherein said latex binder and said amine modified latex binder are anionically stabilized, and wherein said aqueous evaporable carrier comprises an amount of said volatile base sufficient to raise the pH of said aqueous evaporable carrier to a point where essentially all of said polyfunctional amine in said blend, or essentially all of said amine modified latex binder, or essentially all of said combination of said blend and said amine modified latex binder is in a deprotonated state.
Claim 13
Independent Claim
188 words
A method for producing a wear resistant traffic marking on a road surface comprising: applying on said road surface a layer of a traffic paint composition containing an aminosilane added to an aqueous evaporable carrier maintained at a pH in the range of from of 7.5 to 11.0 and having dispersed therein particles of a latex binder bearing an add functional pendant moiety and an enamine functional pendant moiety, wherein said enamine functional pendant moiety results from the reaction of an acetoacetyl functional pendant moiety on said latex binder with ammonia or amine, said binder having a Tg in range varying from 0° C. to 60° C., a gel permeation chromatography number average molecular weight in the range varying from 1,000 to 1000,000, and an acid number in the range varying from 0.1 to 390; and evaporating said aqueous evaporable carrier from said layer to form said traffic marking having improved wear resistance, said layer having a no-pick-up time, as evaluated under ASTM D711-89, varying in the range of from 1 minute to 60 minutes at a relative humidity in the range of from 65 to 90 percent.
Claim 14
Independent Claim
188 words
A method for producing a wear resistant traffic marking on a road surface comprising: applying on said road surface a layer of a traffic paint composition containing an aminosilane added to an aqueous evaporable carrier maintained at a pH in the range of from of 7.5 to 11.0 and having dispersed therein particles of a latex binder bearing an add functional pendant moiety and an enamine functional pendant moiety, wherein said enamine functional pendant moiety results from the reaction of an acetoacetyl functional pendant moiety on said latex binder with ammonia or amine, said binder having a Tg in range varying from 0° C. to 60° C., a gel permeation chromatography number average molecular weight in the range varying from 1,000 to 1000,000, and an acid number in the range varying from 0.1 to 390; and evaporating said aqueous evaporable carrier from said layer to form said traffic marking having improved wear resistance, said layer having a no-pick-up time, as evaluated under ASTM D711-89, varying in the range of from 1 minute to 60 minutes at a relative humidity in the range of from 65 to 90 percent.
Claim 15
Dependent Claim
24 words
The method of claim 12, wherein said gel permeation chromatography number average molecular weight of said binder varies from more than 30,000 to 700,000.
Claim 16
Dependent Claim
135 words
The method of claim 12 wherein said traffic paint composition further comprising: (a) a blend of said latex binder with 0 to 20 weight percent based on the total weight of said binder solids of a polyfunctional amine, or (b) an amine modified latex binder, or (c) a combination of said blend and said amine modified latex binder, wherein said latex binder and said amine modified latex binder are anionically stabilized, and wherein said aqueous evaporable carrier comprises an amount of a volatile base sufficient to raise the pH of said aqueous evaporable carrier to a point where essentially all of said polyfunctional amine in said blend, or essentially of said amine modified latex binder, or essentially all of said combination of said blend and said amine modified latex binder is in a deprotonated state.
Claim 17
Dependent Claim
23 words
The method of claim 12 further comprising contacting said layer with a coagulant to improve the no-pick-up dry time of said traffic marking.
Claim 18
Independent Claim
294 words
A method for producing a wear resistant traffic marking on a road surface comprising: applying on said road surface a layer of a traffic paint composition containing an aqueous evaporable carrier having dispersed therein particles of a latex binder bearing an acid functional pendant moiety and an enamine functional pendant moiety, wherein said enamine functional pendant moiety results from the reaction of an acetoacetyl functional pendant moiety on said latex binder with ammonia or amine, said binder having a Tg in range varying from 0° C. to 60° C., a gel permeation chromatography number average molecular weight in the range varying from 1,000 to 1000,000 and an acid number in the range varying from 0.1 to 390, and (a) a blend of said latex binder with 0 to 20 weight percent based on the total weight of binder solids of a polyfunctional amine, or (b) an amine modified latex binder, or (c) a combination of said blend and said amine modified latex binder, wherein said latex binder and said amine modified latex binder are anionically stabilized, and wherein said aqueous evaporable carrier comprises an amount of a volatile base sufficient to raise the pH of said aqueous evaporable carrier to a point where essentially all of said polyfunctional amine in said blend, or essentially all of said amine modified latex binder, or essentially all of said combination of said blend and said amine modified latex binder is in a deprotonated state; and evaporating said aqueous evaporable carrier from said layer to form said traffic marking having improved wear resistance, said layer having a no-pick-up time, as evaluated under ASTM D711-89, varying in the range of from 1 minute to 60 minutes at a relative humidity in the range of from 65 to 90 percent.
Claim 19
Independent Claim
294 words
A method for producing a wear resistant traffic marking on a road surface comprising: applying on said road surface a layer of a traffic paint composition containing an aqueous evaporable carrier having dispersed therein particles of a latex binder bearing an acid functional pendant moiety and an enamine functional pendant moiety, wherein said enamine functional pendant moiety results from the reaction of an acetoacetyl functional pendant moiety on said latex binder with ammonia or amine, said binder having a Tg in range varying from 0° C. to 60° C., a gel permeation chromatography number average molecular weight in the range varying from 1,000 to 1000,000 and an acid number in the range varying from 0.1 to 390, and (a) a blend of said latex binder with 0 to 20 weight percent based on the total weight of binder solids of a polyfunctional amine, or (b) an amine modified latex binder, or (c) a combination of said blend and said amine modified latex binder, wherein said latex binder and said amine modified latex binder are anionically stabilized, and wherein said aqueous evaporable carrier comprises an amount of a volatile base sufficient to raise the pH of said aqueous evaporable carrier to a point where essentially all of said polyfunctional amine in said blend, or essentially all of said amine modified latex binder, or essentially all of said combination of said blend and said amine modified latex binder is in a deprotonated state; and evaporating said aqueous evaporable carrier from said layer to form said traffic marking having improved wear resistance, said layer having a no-pick-up time, as evaluated under ASTM D711-89, varying in the range of from 1 minute to 60 minutes at a relative humidity in the range of from 65 to 90 percent.
Claim 20
Dependent Claim
13 words
The method of claim 16 wherein said aqueous evaporable carrier further includes aminosilane.
Claim 21
Dependent Claim
24 words
The method of claim 12 or 16 further comprising contacting said layer with a coagulant to improve the no-pick-up dry time of said layer.
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