Patent US3471899A successfully refreshed from Google Patents.
Patent US4328147A successfully refreshed from Google Patents.
US4328147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing asphalt formulation
Assignee: Honeywell International Inc
•
Filing: 1980-10-30
•
Granted: 1982-05-04
•
Expires: 2000-10-30
Abstract
Abstract The present invention is an asphaltic composition which is useful as a roofing asphalt formulation and method of making this formulation. The composition includes about 39 to 99 percent by weight of oxidized asphalt and between 1 and about 8 percent oxidized polyethylene. It is preferred to use between about 0 to 40 percent of the saturant, which can be an unoxidized asphalt, to modify the viscosity of the formulation. There can be a filled asphaltic composition comprising about 40 percent by weight to about 99 percent by weight of the asphaltic composition and about 1 percent by weight to about 60 percent by weight of filler, which can be stone dust.
Inventors
- 👤 Irving B. Chang
- 👤 Robert E. Beckwith, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:22
CPC Classifications
C; C08; C08L; C08L95/00; C08L23/00; C08L23/26; C08L23/30
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
61 words
A filled asphaltic composition comprising: about 40 percent to about 99 percent by weight of an asphaltic composition comprising, about 52 to about 99 percent oxidized asphalt, about 1 to about 8 percent by weight of oxidized polyethylene, and 0 to about 40 percent by weight of saturant; and about 1 percent to about 60 percent by weight of stone dust.
Claim 2
Dependent Claim
61 words
A filled asphaltic composition comprising: about 40 percent to about 99 percent by weight of an asphaltic composition comprising, about 52 to about 99 percent oxidized asphalt, about 1 to about 8 percent by weight of oxidized polyethylene, and 0 to about 40 percent by weight of saturant; and about 1 percent to about 60 percent by weight of stone dust.
Claim 3
Dependent Claim
29 words
The filled asphaltic composition as recited in claim 1 wherein the oxidized polyethylene has a Brookfield Viscosity at 149° C. of between about 100 cps and about 40,000 cps.
Claim 4
Dependent Claim
39 words
The filled asphaltic composition as recited in claim 1 wherein the oxidized polyethylene has a Brookfield Viscosity at 149° C. of between about 120 cps and about 30,000 cps and a molecular weight between about 1000 and about 10,000.
Claim 5
Dependent Claim
25 words
The filled asphaltic composition as recited in claim 1 wherein the oxidized polyethylene has a penetration hardness between about 10.0 dmm and about 0.1 dmm.
Claim 6
Dependent Claim
21 words
A filled asphaltic composition as recited in claim 1 wherein the oxidized polyethylene has a molecular weight between 3000 and 5000.
Claim 7
Dependent Claim
35 words
The filled asphaltic composition as recited in claim 1 wherein the asphaltic composition comprises about 71 to 89 percent oxidized asphalt, about 1 to 4 percent oxidized polyethylene, and about 10 to 25 percent saturant.
Claim 8
Dependent Claim
17 words
The filled asphaltic composition as recited in claim 1 or 6 wherein the saturant is unoxidized asphalt.
Claim 9
Independent Claim
47 words
A method of making a composition comprising an oxidized asphalt and oxidized polyethylene comprising the steps of: mixing unoxidized asphalt and unoxidized polyethylene; heating the mixture to about 300° F. to 500° F. for about 2 to about 6 hours; and blowing air through the heating mixture.
Claim 10
Independent Claim
47 words
A method of making a composition comprising an oxidized asphalt and oxidized polyethylene comprising the steps of: mixing unoxidized asphalt and unoxidized polyethylene; heating the mixture to about 300° F. to 500° F. for about 2 to about 6 hours; and blowing air through the heating mixture.
Claim 11
Dependent Claim
27 words
The method as recited in claim 8 wherein the mixture is heated for about 4 to about 6 hours between about 400° F. and about 500° F.
Claim 12
Dependent Claim
38 words
The method as recited in claim 8 wherein a catalyst is added to the mixture prior to heating and the mixture is heated for about 2 to about 4 hours between about 350° F. and about 500° F.
Claim 13
Dependent Claim
23 words
The method as recited in claim 8 further comprising the step of adding saturant to the mixture upon completion of the heating step.
Claim 14
Dependent Claim
13 words
The method as recited in claim 10 wherein the catalyst is ferric chloride.
Claim 15
Independent Claim
38 words
A method of making a composition comprising an oxidized asphalt and oxidized polyethylene comprising the steps of: oxidizing the asphalt; adding unoxidized polyethylene to the oxidized asphalt; continuing to oxidize the mixture of oxidized asphalt and unoxidized polyethylene.
Claim 16
Independent Claim
38 words
A method of making a composition comprising an oxidized asphalt and oxidized polyethylene comprising the steps of: oxidizing the asphalt; adding unoxidized polyethylene to the oxidized asphalt; continuing to oxidize the mixture of oxidized asphalt and unoxidized polyethylene.
Claim 17
Dependent Claim
28 words
The method as recited in claim 13 further comprising the step of adding saturant to the mixture upon completion of the step of continuing to oxidize the mixture.
References Cited (Backward Citations)
US3154508A
Cited
US3716510A
Cited
US3634293A
Cited
US4008095A
Cited
US3703393A
Cited
US3829321A
Cited
US4028293A
Cited
US4032491A
Cited
US4000095A
Cited
US3926884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |