Sulfur asphalt in roofing, damp-proofing and water proofing

Patent metadata

Field	Value
Publication number	US-2017190912-A1
Application number	US-201715463816-A
Country	US
Kind code	A1
Filing date	Mar 20, 2017
Priority date	Nov 1, 2013
Publication date	Jul 6, 2017
Grant date	—

Abstract

A method of waterproofing or damp proofing a protected member having a surface with a sulfur-extended elastomer asphalt binder composition uses a sulfur-extended elastomer asphalt binder composition that includes elemental sulfur, an elastomer and an asphalt binder. The method includes the steps of combining the elastomer with the asphalt binder maintained at an elastomer mixing temperature such that an intermediate asphalt binder mixture forms, and combining elemental sulfur with the intermediate asphalt binder maintained at a sulfur mixing temperature such that the sulfur-extended elastomer asphalt binder composition forms. The method also includes the step of applying the sulfur-extended elastomer asphalt binder composition to the surface of the protected member such that the sulfur-extended elastomer asphalt binder composition contacts, adheres to and forms a layer upon the surface of the protected member. The asphalt binder composition is applied at a temperature no greater than 145° C.

First claim

What is claimed is:

1 . A sulfur-extended elastomer asphalt binder composition useful for water proofing, damp proofing and roofing applications, the sulfur-extended elastomer asphalt binder composition comprising elemental sulfur in a range of from about 0.1% to about 30.0%, an elastomer in a range of from about 0.1% to about 10.0% and the asphalt binder in a range of from about 99.8% to about 60%, each by total weight of the sulfur-extended elastomer asphalt binder composition.

2 . The composition of claim 1 where the elemental sulfur is in a range of from about 0.1% to about 10.0% and the asphalt binder is in a range of from about 99.8% to about 80%, each by total weight of the sulfur-extended elastomer asphalt binder composition.

3 . The composition of claim 1 where the sulfur-extended elastomer asphalt binder composition consists essentially of 5.0% elemental sulfur, 5.0% the elastomer and 90.0% the asphalt binder, each by total weight of the sulfur-extended elastomer asphalt binder composition.

4 . The composition of claim 1 where the asphalt binder is a Performance Grade asphalt per the AASHTO Performance Graded Asphalt Binder Specification M 320, Table 1.

5 . The composition of claim 4 where the asphalt binder consists essentially of a PG 64-10 asphalt cement.

6 . The composition of claim 1 where the elastomer comprises a styrene-butadiene-styrene (SBS) block copolymer.

7 . The composition of claim 6 where the elastomer consists essentially of a SBS block copolymer.

8 . The composition of claim 1 where the composition is operable to form a layer on and bond with a surface such that the bond strength between the layer and the surface is at least 150 kN/m 2 as determined using the Bond Strength Test.

9 . The composition of claim 1 where the composition has a ductility that is no less than 20 cm per ASTM D113.

10 . The composition of claim 1 where the composition has a softening point temperature of less than 83° C. per ASTM D36 and has a penetration of greater than 25 tenths of a millimeter per ASTM D5.

11 . The composition of claim 1 , wherein the elastomer is an unsaturated elastomer.

12 . The composition of claim 1 , wherein the sulfur-extended elastomer asphalt binder forms with a viscosity that is less than the viscosity of the intermediate asphalt binder mixture and that is no greater than 7500 cP.

Assignees

• Saudi Arabian Oil Co
• Univ King Fahd Pet & Minerals

Inventors

• Al-Mehthel Mohammed
• Al-Abdul Wahhab Hamad I
• Al-Idi Saleh H
• Hussein Ibnelwaleed A

Classifications

• C08L2555/84

  Polymers comprising styrene, e.g. , polystyrene, styrene-diene copolymers or styrene-butadiene-styrene copolymers · CPC title

• C08K3/06

  Sulfur · CPC title

• C09D195/00

  Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch · CPC title

• Y10T156/10

  Methods of surface bonding and/or assembly therefor · CPC title

• C08L95/00 Primary

  Compositions of bituminous materials, e.g. asphalt, tar, pitch · CPC title