US4663370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiberized joint/crack sealant composition
Assignee: Hercules LLC
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Filing: 1985-10-07
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Granted: 1987-05-05
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Expires: 2005-10-07
Abstract
Abstract Polyolefin reinforced asphalt paving and sealing composition containing straight chain unsaturated fatty acid having up to 30 weight percent rosin as a plasticizer, plus an adhesion control component comprising high density polyolefin fines; and a corresponding method for controlling high temperature tracking and washing characteristics without aggravating mixing or plugging problems, by replacing, at least in part, regular inorganic aggregate such as sand with high density polyolefin fines.
Inventors
- 👤 John B. Marvel, Sr.
- 👤 James P. Modrak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:17
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
102 words
An asphalt paving and sealing composition comprising (a) about 0.25%-10% by weight of a staple polyolefin or polyester reinforcing fiber of about 1 mm-20 mm length and a diameter of about 0.1-5.0 mil; (b) up to about 10% by weight of straight chain unsaturated fatty acid containing up to about 30 weight % rosin; (c) up to about 10% by weight of aggregate; and (d) an active amount of an adhesion control component containing high density polyester or polyolefin fines; said fines of component (d) having a particle diameter not exceeding about 200 microns and a length not exceeding about 1.5 mm.
Claim 2
Dependent Claim
102 words
An asphalt paving and sealing composition comprising (a) about 0.25%-10% by weight of a staple polyolefin or polyester reinforcing fiber of about 1 mm-20 mm length and a diameter of about 0.1-5.0 mil; (b) up to about 10% by weight of straight chain unsaturated fatty acid containing up to about 30 weight % rosin; (c) up to about 10% by weight of aggregate; and (d) an active amount of an adhesion control component containing high density polyester or polyolefin fines; said fines of component (d) having a particle diameter not exceeding about 200 microns and a length not exceeding about 1.5 mm.
Claim 3
Dependent Claim
27 words
The composition of claim 1 as a hot mix, in which the adhesion control component fines comprise at least one of a polyester, polyethylene, or polypropylene homopolymer.
Claim 4
Dependent Claim
35 words
The composition of claim 1 as an aqueous emulsion in which the adhesion control component comprises a polyolefin water-dispersible pulp having a particle diameter of about 20-40 microns and a length of about 0.5-1.5 mm.
Claim 5
Dependent Claim
22 words
The composition of claim 2 wherein the adhesion control component is present in the amount of about 0.25%-10% by weight of composition.
Claim 6
Dependent Claim
22 words
The composition of claim 3 wherein the adhesion control component is present in the amount of about 0.5%-7% by weight of composition.
Claim 7
Dependent Claim
101 words
In a method for controlling tracking and washing characteristics of fiber-reinforced asphalt paving and sealing compositions containing about 0.25%-10% by weight of staple polyolefin or polyester reinforcing fiber of about 1 mm-20 mm length and a diameter of about 0.1-5.0 mil and up to about 10% by weight of straight chain unsaturated fatty acid containing up to about 30 weight % rosin, the improvement comprising incorporating into said composition an active amount of an adhesion control component containing high density polyester or polyolefin fines having a particle diameter not exceeding about 200 microns and a length not exceeding about 1.5 mm.
Claim 8
Dependent Claim
101 words
In a method for controlling tracking and washing characteristics of fiber-reinforced asphalt paving and sealing compositions containing about 0.25%-10% by weight of staple polyolefin or polyester reinforcing fiber of about 1 mm-20 mm length and a diameter of about 0.1-5.0 mil and up to about 10% by weight of straight chain unsaturated fatty acid containing up to about 30 weight % rosin, the improvement comprising incorporating into said composition an active amount of an adhesion control component containing high density polyester or polyolefin fines having a particle diameter not exceeding about 200 microns and a length not exceeding about 1.5 mm.
Claim 9
Dependent Claim
50 words
The method of claim 6 wherein the reinforcing polyolefin fiber is a polyester, polypropylene, or polyethylene and the adhesion control component comprises at least one of polypropylene or polyethylene homopolymer or copolymer fines having a particle diameter not exceeding about 200 microns and a length not exceeding about 1.5 mm.
Claim 10
Dependent Claim
26 words
The method of claim 7 wherein the adhesion control component fines have a diameter of about 20-40 microns and a length of about 0.5 mm-1.5 mm.
Claim 11
Dependent Claim
33 words
The method of claim 6 wherein the paving and sealing composition is in the form of an aqueous emulsion and the polyolefin adhesion control component is introduced as a water-dispersible polypropylene fiber pulp.
Claim 12
Dependent Claim
23 words
The method of claim 6 wherein the paving and sealing composition comprises hot asphalt and the adhesion control component comprises dry polypropylene fines.
Claim 13
Dependent Claim
21 words
The method of claim 6 wherein the reinforcing fiber is a polypropylene and the polyolefin adhesion control component is a polypropylene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |