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US4268428A Expired / Lapsed US ⏱️ 0.0 years remaining

Asphaltic material and method

Assignee: PAVON Corp
•
Filing: 1979-07-12
•
Granted: 1981-05-19
•
Expires: 1999-07-12
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Abstract

Abstract An improved asphaltic material useful for sealing or patching of porous, interstitial substrates such as concrete or asphalt is provided which achieves superior results by flowing into and at least partially filling the substrate interstices themselves, as opposed to serving merely as a surface coating. The material preferably includes a conventional CRS-1H cationic asphaltic emulsion, respective quantities of a vinyl acrylic copolymer and a NEOPRENE latex. In one type of sealing application, a diluted quantity of the asphaltic material is heated to about 160° F. and is flooded over the substrate to be sealed; the liquid passes into and fills the substrate voids, and, after hardening of the material, an effective, gasket-like seal for the substrate is presented which retains its integrity during varying ambient weather conditions and under hard use.

Inventors

  • 👤 Robert R. Green

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 16:53
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 83 words
An asphalt material for use with concrete or the like, comprising: from about 50 to 95% by weight of an aqueous asphaltic emulsion; and respective quantities of a vinyl acetate-acrylic copolymer and a latex having chloroprene as the primary monomer therein and having a solids content of from 40 to 60%, said respective quantities together totaling from about 5 to 50% by weight of the material, said copolymer and latex serving to give the asphalt material a degree of resiliency for sealing purposes.
Claim 2
Dependent Claim 83 words
An asphalt material for use with concrete or the like, comprising: from about 50 to 95% by weight of an aqueous asphaltic emulsion; and respective quantities of a vinyl acetate-acrylic copolymer and a latex having chloroprene as the primary monomer therein and having a solids content of from 40 to 60%, said respective quantities together totaling from about 5 to 50% by weight of the material, said copolymer and latex serving to give the asphalt material a degree of resiliency for sealing purposes.
Claim 3
Dependent Claim 15 words
The material as set forth in claim 1 wherein said emulsion is a cationic emulsion.
Claim 4
Dependent Claim 26 words
The material as set forth in claim 1 wherein said emulsion includes about 65% by weight asphaltic solids, an aqueous phase, and at least one surfactant.
Claim 5
Dependent Claim 21 words
The material as set forth in claim 1 wherein said emulsion is present at a level of about 90% by weight.
Claim 6
Dependent Claim 21 words
The material as set forth in claim 1 wherein said copolymer is present in an amount in excess of said latex.
Claim 7
Dependent Claim 23 words
The material as set forth in claim 1 wherein said copolymer has a solids content of from about 50 to 60% by weight.
Claim 8
Dependent Claim 28 words
The material as set forth in claim 1 wherein said latex is a carboxylated polymer having a standard solids content of from about 40 to 50% by weight.
Claim 9
Dependent Claim 43 words
The material as set forth in claim 1 wherein said respective quantities together total about 10% by weight, said copolymer being present at a level of about 7% by weight, and said latex being present at a level of about 3% by weight.

References Cited (Backward Citations)

US3979916A Cited
US4041712A Cited
US4036799A Cited
US4073759A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-05-18 1984-11-17 1985-05-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-05-18 1988-11-17 1989-05-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-05-18 1992-11-17 1993-05-19 $7700.00 Window Closed / Lapsed

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