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US 5,028,487 AGranted
Primerless waterproofing laminates
AssigneeW. R. Grace & Co.-Conn.
InventorsLawrence J. Kindt, James M. Gaidis, Jay S. Kellett
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Abstract
For waterproofing civil engineering structures using flexible, sheet-like waterproofing laminates which can be applied without primer to structures at temperatures of 40.degree. 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.
Claims8
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.
4 more elements
Dependencies are inferred from the claim text.