US4436864A
Expired / Lapsed
US
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Aqueous emulsions of acrylamide and rubber modified asphalts
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1982-12-27
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Granted: 1984-03-13
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Expires: 2002-12-27
Abstract
Abstract An aqueous asphaltic emulsion is provided in which the dispersed asphaltic material is the prereacted reaction product of asphalt having a viscosity of less than about 120,000 cps (at 140° F.), an acrylamide, a vinyl aromatic monomer and an elastomer.
Inventors
- 👤 Anthony V. Grossi
- 👤 Leon A. Hagelee
- 👤 Louis T. Hahn
- 👤 Alfred Marzocchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:59
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/026; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
53 words
In an asphalt emulsion comprising water, an asphaltic material and effective emulsifying amounts of an emulsifier, the improvement wherein said asphaltic material is the prereacted reaction product produced by reacting an acrylamide, asphalt having a viscosity of less than about 120,000 cps (at 140° F.), a vinyl aromatic monomer and a rubbery polymer.
Claim 2
Dependent Claim
53 words
In an asphalt emulsion comprising water, an asphaltic material and effective emulsifying amounts of an emulsifier, the improvement wherein said asphaltic material is the prereacted reaction product produced by reacting an acrylamide, asphalt having a viscosity of less than about 120,000 cps (at 140° F.), a vinyl aromatic monomer and a rubbery polymer.
Claim 3
Dependent Claim
91 words
The emulsion of claim 1 wherein said acrylamide is a compound of the formula (R.sub.1)(R.sub.2)C═C(R.sub.3)--C(O)N(R.sub.4)(R.sub.5) wherein R 1 , R 2 and R 3 are independently selected from hydrogen and a C 1 -C 3 alkyl; R 4 and R 5 are independently selected from hydrogen, a C 1 -C 3 alkyl and a radical of the formula --R.sub.6 --N(R.sub.7)(R.sub.8) wherein R 6 is an alkylene group of 1 to 5 carbon atoms and R 7 and R 8 are independently selected from hydrogen or a C 1 -C 3 alkyl.
Claim 4
Dependent Claim
40 words
The emulsion of claim 2 wherein R 4 or R 5 is said radical of the formula --R 6 --N(R 7 )(R 8 ) and wherein said asphalt has a viscosity of less than about 75,000 cps (at 140° F.).
Claim 5
Dependent Claim
13 words
The emulsion of claim 3 wherein R 1 and R 2 are hydrogen.
Claim 6
Dependent Claim
12 words
The emulsion of claim 3 wherein R 6 is ethylene or propylene.
Claim 7
Dependent Claim
18 words
The emulsion of claim 3 wherein R 3 , R 7 and R 8 are hydrogen or methyl.
Claim 8
Dependent Claim
39 words
The emulsion of claim 2 wherein said acrylamide is dimethylaminopropylmethacrylamide said vinyl aromatic monomer comprises styrene, said asphalt has a viscosity of about 40,000 to about 60,000 cps and said rubbery polymer is a copolymer of styrene and butadiene.
Claim 9
Dependent Claim
29 words
The emulsion of claim 2 where said rubbery polymer is natural rubber or a homopolymer of a diene or a copolymer of a diene and an olefinically unsaturated monomer.
Claim 10
Independent Claim
82 words
A method comprising charging into a reactor an acrylamide compound having a double bond, asphalt having a viscosity of less than about 120,000 cps (at 140° F.), a vinyl aromatic monomer, and a rubbery polymer which is natural rubber or a homopolymer of a diene or a copolymer of a diene and an olefinically unsaturated monomer, heating the materials at an elevated temperature for several hours and emulsifying the product in the presence of water and effective emulsifying amounts of an emulsifier.
Claim 11
Independent Claim
82 words
A method comprising charging into a reactor an acrylamide compound having a double bond, asphalt having a viscosity of less than about 120,000 cps (at 140° F.), a vinyl aromatic monomer, and a rubbery polymer which is natural rubber or a homopolymer of a diene or a copolymer of a diene and an olefinically unsaturated monomer, heating the materials at an elevated temperature for several hours and emulsifying the product in the presence of water and effective emulsifying amounts of an emulsifier.
Claim 12
Dependent Claim
105 words
The method of claim 9 wherein said acrylamide compound is a compound of the formula (R.sub.1)(R.sub.2)C═C(R.sub.3)--C(O)N(R.sub.4)(R.sub.5) wherein R 1 , R 2 and R 3 are independently selected from hydrogen and a C 1 -C 3 alkyl; R 4 and R 5 are independently selected from hydrogen, a C 1 -C 3 alkyl and a radical of the formula --R.sub.6 --N(R.sub.7)(R.sub.8) wherein R 6 is an alkylene group containing 1 to 5 carbon atoms and R 7 and R 8 are independently selected from hydrogen and a C 1 -C 3 alkyl and wherein such asphalt has a viscosity of less than about 75,000 cps.
Claim 13
Dependent Claim
23 words
The method of claim 10 wherein said vinyl aromatic monomer is styrene and wherein said rubber is a copolymer of styrene and butadiene.
Claim 14
Dependent Claim
24 words
The method of claim 11 wherein said acrylamide is dimethylaminopropylmethacrylamide and wherein said asphalt has a viscosity of about 40,000 to about 60,000 cps.
Claim 15
Dependent Claim
10 words
The method of claim 10 wherein R 4 is hydrogen.
Claim 16
Dependent Claim
18 words
The method of claim 13 wherein R 7 and R 8 are a C 1 -C 3 alkyl.
Claim 17
Dependent Claim
12 words
The method of claim 14 wherein said emulsifier is a fatty amine.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |