US4383081A
Expired / Lapsed
US
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Cationic acrylamide chemically modified asphalts
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1981-12-11
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Granted: 1983-05-10
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Expires: 2001-12-11
Abstract
Abstract Cationic chemically modified asphalts having utility for road construction, repair and maintenance, as well as a coating for various substrates including cementitious substrates, glass and metal are provided. These asphalts are obtained by reacting an acrylamide, optionally with a vinyl aromatic, with a prereacted product of asphalt, a rubber and a vinyl aromatic monomer.
Inventors
- 👤 Anthony V. Grossi
- 👤 Leon A. Hagelee
- 👤 Louis T. Hahn
- 👤 Alfred Marzocchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:57
CPC Classifications
C; C08; C08F; C08F289/00; C09; C09D; C09D151/00; C10; C10C; C10C3/00; C10C3/02; C10C3/026
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
36 words
As a composition of matter, the product produced by reacting an (i) acrylamide with (ii) asphalt that has been prereacted with a vinyl aromatic monomer and a rubbery polymer and (iii) optionally, a vinyl aromatic monomer.
Claim 2
Dependent Claim
36 words
As a composition of matter, the product produced by reacting an (i) acrylamide with (ii) asphalt that has been prereacted with a vinyl aromatic monomer and a rubbery polymer and (iii) optionally, a vinyl aromatic monomer.
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 idependently 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
24 words
The composition of claim 2 wherein R 4 and R 5 are said radical of the formula --R 6 --N(R 7 )(R 8 ).
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
10 words
The composition of claim 2 wherein said acrylamide is dimethylaminopropylmethacrylamide.
Claim 9
Dependent Claim
26 words
The composition of claim 3 wherein said rubbery polymer is a homopolymer of a diene or a copolymer of a diene and an olefinically unsaturated monomer.
Claim 10
Dependent Claim
27 words
The composition of claim 8 wherein said reacting is done by heating at a temperature of at least about 115° C. for at least about 8 hours.
Claim 11
Dependent Claim
16 words
The composition of claim 9 wherein said optional vinyl aromatic is employed to produce said composition.
Claim 12
Dependent Claim
24 words
The composition of claim 10 wherein said employed optional vinyl aromatic is styrene and wherein the vinyl aromatic of said prereacted asphalt is styrene.
Claim 13
Dependent Claim
54 words
A process for producing a chemically modified asphalt which comprises charging into a reactor (i) an acrylamide, (ii) an asphalt that has been prereacted with a vinyl aromatic monomer and a rubbery polymer and, (iii) optionally, a vinyl aromatic monomer, and heating the materials in the reactor at an elevated temperature for several hours.
Claim 14
Dependent Claim
54 words
A process for producing a chemically modified asphalt which comprises charging into a reactor (i) an acrylamide, (ii) an asphalt that has been prereacted with a vinyl aromatic monomer and a rubbery polymer and, (iii) optionally, a vinyl aromatic monomer, and heating the materials in the reactor at an elevated temperature for several hours.
Claim 15
Dependent Claim
92 words
The process of claim 12 whereiin 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 16
Dependent Claim
25 words
The process of claim 13 wherein the materials are heated at a temperature of at least about 115° C. for at least about 8 hours.
Claim 17
Dependent Claim
34 words
The process of claim 14 wherein said vinyl aromatic monomer is styrene and wherein said rubbery polymer is a homopolymer of a diene or a copolymer of a diene and an olefinically unsaturated monomer.
Claim 18
Dependent Claim
19 words
The composition of claim 2 wherein said reacting is done by heating at an elevated temperature for several hours.
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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) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |