US4419489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easily emulsifiable acrylamide and rubber modified asphalts
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1982-12-27
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Granted: 1983-12-06
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Expires: 2002-12-27
Abstract
Abstract Chemically modified asphalts having utility for road construction, repair and maintenance as well as coating for various substrates, including cementitious substrates, glass and metal are provided. These asphalts are the 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.
Inventors
- 👤 Anthony V. Grossi
- 👤 Leon A. Hagelee
- 👤 Louis T. Hahn
- 👤 Alfred Marzocchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:21
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/026; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
33 words
As a composition of matter, the 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
33 words
As a composition of matter, the 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 composition 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 composition 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 composition of claim 3 wherein R 1 and R 2 are hydrogen.
Claim 6
Dependent Claim
12 words
The composition of claim 3 wherein R 6 is ethylene or propylene.
Claim 7
Dependent Claim
18 words
The composition of claim 3 wherein R 3 , R 7 and R 8 are hydrogen or methyl.
Claim 8
Dependent Claim
42 words
The composition 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 (at 140° F.) and said rubbery polymer is a copolymer of styrene and butadiene.
Claim 9
Dependent Claim
29 words
The composition 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
67 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 and heating the materials at an elevated temperature for several hours.
Claim 11
Independent Claim
67 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 and heating the materials at an elevated temperature for several hours.
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.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |