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US 10,240,076 B2Granted
Self-adhesive bituminous sheath for building and bitumen modifier for self-adhesive bituminous sheath
AssigneeTecnofilm S.P.A.
InventorBruno Cardinali
Life of this patent
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Abstract
An adhesive bituminous sheath for building includes bitumen and an adhesivizing additive mixed with the bitumen, wherein the adhesivizing additive is an aliphatic and cycloaliphatic resin.
Drawings
Claims5
A permanent adhesive bituminous sheath for use in construction, the permanent adhesive bituminous sheath comprising:
- a bitumen;
- a bituminous modifier comprising vulcanized rubber powder with a granularity of less than 0.4 millimeters, styrene-butadiene-styrene polymer and a lubricant and
- an adhesivizing additive mixed with said bitumen, said adhesivizing additive being a mixture of only aliphatic and cycloaliphatic resin in an amount of between 1 and 4 weight percent of a total weight of the adhesive bituminous sheath.
A method of manufacturing a permanent adhesive bituminous sheath, the method comprising:
- forming a bituminous modifier by extruding a mixture of vulcanized rubber powder with a granularity less than 0.4 millimeters, styrene-butadiene-styrene polymer, a lubricant and an adhesivizing additive being only an aliphatic and cycloaliphatic resin, the aliphatic and cycloaliphatic resin being between 10% and 40% of a total weight of the bituminous modifier;
- and
- mixing bitumen with the bituminous modifier.
Dependencies are inferred from the claim text.