US5028487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primerless waterproofing laminates
Assignee: WR Grace and Co Conn
•
Filing: 1989-01-10
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Granted: 1991-07-02
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Expires: 2009-01-10
Abstract
Abstract For waterproofing civil engineering structures using flexible, sheet-like waterproofing laminates which can be applied without primer to structures at temperatures of 40° F. and above. Primerless waterproofing laminates having a bituminous layer comprising 29 to 54 weight percent asphalt, 25 to 50 weight percent process oil, and 16 to 35 weight percent thermoplastic block polymer of styrene and butandiene monomers.
Inventors
- 👤 Lawrence J. Kindt
- 👤 James M. Gaidis
- 👤 Jay S. Kellett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:11
CPC Classifications
B; B32; B32B; B32B11/00; B32B11/04; B32B11/046; B32B11/06; B32B27/00; B32B27/32; B32B7/00; B32B7/04; B32B7/06; C; C08; C08L; C08L95/00; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31815
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
153 words
A primerless waterproofing laminate consisting of a bituminous layer on a support film wherein the bituminous layer comprises: 29 to 54 weight percent asphalt having the following alumina separation (ASTM D4124) range: ______________________________________
Saturates 5-25%
Naphthenic Aromatics
20-40%
Polar Aromatics 30-50%
Asphaltenes 5-20%;
______________________________________ 25 to 50 weight percent process oil having the following clay gel separation (ASTM D2007) range: ______________________________________
Saturates 10-30%
Polar Compounds 10-20%
Aromatics 50-85%
Asphaltenes 0-0.5%; and
______________________________________ 16 to 35 weight percent thermoplastic block polymer of styrene and butadiene monomers comprising a mixture of a polymer having a polystyrene:butadiene ratio of about 70:30 and a block polystyrene content of about 30% (high molecular weight polymer) and a polymer having a polystyrene:butadiene ratio of about 75:25 and a block polystyrene content of about 18% (low molecular weight polymer) wherein the ratio of low molecular weight polymer to high molecular weight polymer is in the range of 5:1 to 1:1.
Claim 2
Dependent Claim
153 words
A primerless waterproofing laminate consisting of a bituminous layer on a support film wherein the bituminous layer comprises: 29 to 54 weight percent asphalt having the following alumina separation (ASTM D4124) range: ______________________________________
Saturates 5-25%
Naphthenic Aromatics
20-40%
Polar Aromatics 30-50%
Asphaltenes 5-20%;
______________________________________ 25 to 50 weight percent process oil having the following clay gel separation (ASTM D2007) range: ______________________________________
Saturates 10-30%
Polar Compounds 10-20%
Aromatics 50-85%
Asphaltenes 0-0.5%; and
______________________________________ 16 to 35 weight percent thermoplastic block polymer of styrene and butadiene monomers comprising a mixture of a polymer having a polystyrene:butadiene ratio of about 70:30 and a block polystyrene content of about 30% (high molecular weight polymer) and a polymer having a polystyrene:butadiene ratio of about 75:25 and a block polystyrene content of about 18% (low molecular weight polymer) wherein the ratio of low molecular weight polymer to high molecular weight polymer is in the range of 5:1 to 1:1.
Claim 3
Dependent Claim
29 words
A primerless waterproofing laminate of claim 1 in which the asphalt has the following alumina separation range: ______________________________________
Saturates 8-15%
Naphthenic Aromatics
32-40%
Polar Aromatics 40-46%
Asphaltenes 8-15%
______________________________________
Claim 4
Dependent Claim
34 words
A primerless waterproofing laminate of claim 1 having 41 to 54 weight percent asphalt, 30 to 40 weight percent process oil, and 18 to 35 weight percent thermoplastic polymer of styrene and butadiene monomers.
Claim 5
Dependent Claim
34 words
A primerless waterproofing laminate of claim 3 having 47 to 52 weight percent asphalt, 30 to 35 weight percent process oil, and 18 to 25 weight percent thermoplastic polymer of styrene and butadiene monomers.
Claim 6
Dependent Claim
22 words
A primerless waterproofing laminate of claim 1 wherein the ratio of low molecular weight polymer to high molecular weight polymer is 2:1.
Claim 7
Dependent Claim
28 words
A primerless waterproofing laminate of claim 5 having 49 weight percent asphalt, 30 weight percent process oil, and 21 weight percent thermoplastic polymer of styrene and butadiene monomers.
Claim 8
Dependent Claim
22 words
A primerless waterproofing laminate of claim 1 wherein the ratio of low molecular weight polymer to high molecular weight polymer is 3.8:1.
Claim 9
Dependent Claim
69 words
A primerless waterproofing laminate of claim 7 having 48 weight percent asphalt, 32.75 weight percent process oil, and 19.25 weight percent thermoplastic block polymer of styrene and butadiene monomers comprising a mixture in a 3.8:1 ratio of a polymer having a styrene: butadiene ratio of 75:25 and a block polystyrene content of 18% and a polymer having a styrene:butadiene ratio of 70:30 and a block polystyrene content of 30%.
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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) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |