Abstract: The present invention is directed to bituminous emulsions comprising bitumen, water, one or more emulsifiers systems and a diblock copolymer including one block of a monovinylaromatic hydrocarbon and one block of a conjugated diene, wherein the conjugated diene has a peak molecular weight from 30,000 to 78,000 and a vinyl content from 35 to 80 mol percent based on the number of repeat monomer units in the conjugated diene block. A block copolymer comprising at least two blocks of monovinylaromatic hydrocarbon and at least one block of conjugated diene, the block copolymer selected from linear triblock copolymers having a peak molecular weight that is 1.5 to 3.0 times the peak molecular weight of the diblock copolymer, multiarm coupled block copolymers having a peak molecular weight that is 1.5 to 9.

Abstract: An impact resistant shingle is provided which includes an asphalt-coated substrate having a first surface and a second surface, the first surface having a headlap portion and an exposure portion. The headlap portion comprises a transition zone disposed at an edge region of the substrate distal to the exposure portion. The first surface of the substrate exclusive of the transition zone comprises granules, wherein the shingle has a smaller thickness dimension at the transition zone than a thickness dimension of a remaining area of the shingle.

Abstract: An impact resistant shingle is provided which includes an asphalt-coated substrate having a first surface and a second surface, the first surface having a headlap portion and an exposure portion. The headlap portion comprises a transition zone disposed at an edge region of the substrate distal to the exposure portion. The first surface of the substrate exclusive of the transition zone comprises granules, wherein the shingle has a smaller thickness dimension at the transition zone than a thickness dimension of a remaining area of the shingle.

Abstract: A block copolymer composition including a diblock copolymer (I) having one block of a monovinylaromatic hydrocarbon and one block of a conjugated diene having a peak molecular weight from 30,000 to 78,000 and one or more block copolymers (ii) comprising at least two blocks of monovinylaromatic hydrocarbon and at least one block of conjugated diene, the block copolymer selected from linear triblock copolymers having a peak molecular weight that is 1.5 to 9.0 times the peak molecular weight of the diblock copolymer, and mixtures thereof, wherein the ratio of (i) to (ii) is greater than 1:1.

Abstract: The present invention is directed to a process for preparing a polymer modified bituminous binder composition in the substantial absence of crosslinking agents by heating a bitumen component in a stirred tank to a temperature from 185° C. to 221° C.; adding a block copolymer composition to the bitumen component while the bitumen component is being stirred to form a homogeneous mixture of the bitumen component and the block copolymer composition; and continuing to stir the homogeneous mixture while maintaining the temperature from 185° C. to 221° C. for a period of time from 4 hours to 30 hours thereby forming a cured polymer modified bituminous binder composition.

Abstract: The present invention is directed to a process for preparing a polymer modified bituminous binder composition in the substantial absence of crosslinking agents by heating a bitumen component in a stirred tank to a temperature from 160° C. to 221° C.; adding a block copolymer composition to the bitumen component while the bitumen component is being stirred to form a homogeneous mixture of the bitumen component and the block copolymer composition; and continuing to stir the homogeneous mixture while maintaining the temperature from 180° C. to 221° C. for a total period of time from 4 hours to 30 hours thereby forming a cured polymer modified bituminous binder composition.

Abstract: The present invention is directed to a process for preparing a polymer modified bituminous binder composition in the substantial absence of crosslinking agents by heating a bitumen component in a stirred tank to a temperature from 185° C. to 221° C.; adding a block copolymer composition to the bitumen component while the bitumen component is being stirred to form a homogeneous mixture of the bitumen component and the block copolymer composition; and continuing to stir the homogeneous mixture while maintaining the temperature from 185° C. to 221° C. for a period of time from 4 hours to 30 hours thereby forming a cured polymer modified bituminous binder composition.

Abstract: A process for preparing compatible, selectively hydrogenated block copolymer-modified bituminous compositions comprising blowing a mixture of the block copolymer and bitumen with an oxidizing gas at temperatures of at least 375° C. for at least 75 minutes. The modifying polymer is a selectively hydrogenated styrenic block copolymer and no blowing catalyst is required. Stable bituminous compositions comprising 6 to 25 parts by weight of block copolymer per 100 parts of asphalt are also provided as well as their application as roofing shingles.

Abstract: The present invention is directed to a process for preparing a polymer modified bituminous binder composition in the substantial absence of crosslinking agents by heating a bitumen component in a stirred tank to a temperature from 160° C. to 221° C.; adding a block copolymer composition to the bitumen component while the bitumen component is being stirred to form a homogeneous mixture of the bitumen component and the block copolymer composition; and continuing to stir the homogeneous mixture while maintaining the temperature from 180° C. to 221° C. for a total period of time from 4 hours to 30 hours thereby forming a cured polymer modified bituminous binder composition.

Abstract: The present invention relates to a bituminous composition comprising a bituminous component, an elastomeric polymer component, and a specific cross-linking composition component comprising elemental sulfur, a sulfur-containing derivative, a sulfur activator, a fatty acid or fatty acid derivative and a polymeric carrier. Compositions according to the invention are particularly useful in preparing polymer-modified asphalt (“PMA”) for road applications.

Abstract: The present invention is directed to bituminous emulsions comprising bitumen, water, one or more emulsifiers and a block copolymer composition.

Abstract: The present invention is a polymer modified bituminous composition having improved phase stability, heat aging and viscosity characteristics. The bituminous compositions are blends comprising bitumen and from about 0.5 to about 25% of a novel anionic block copolymer where one of the blocks is a controlled distribution copolymer of a conjugated diene and a mono-alkenyl arene having a specific arrangement of the monomers in the copolymer block. The composition of the invention is useful for paving, roofing felts, water-proof membrane, adhesive, mopping asphalt, carpet backing and pipe coating applications.

Abstract: The present invention is a polymer modified bituminous composition having improved phase stability, heat aging and viscosity characteristics. The bituminous compositions are blends comprising bitumen and from about 0.5 to about 25% of a novel anionic block copolymer where one of the blocks is a controlled distribution copolymer of a conjugated diene and a mono-alkenyl arene having a specific arrangement of the monomers in the copolymer block. The composition of the invention is useful for paving, roofing felts, water-proof membrane, adhesive, mopping asphalt, carpet backing and pipe coating applications.

Abstract: Chlorinated polyethylene resins which are semicrystalline yet of sufficiently low viscosity to be processible on conventional extrusion equipment are provided. The resins may be used in a variety of applications such as membranes, either thermoplastic or thermoset, wire and cable jackets and the like. Plasticizers and other viscosity-reducing aids need not be used in conjunction with these resins.

Abstract: Chlorinated polyethylene resins which are semicrystalline yet of sufficiently low viscosity to be processible on conventional extrusion equipment are provided. The resins may be used in a variety of applications such as membranes, either theromplastic or thermoset, wire and cable jackets and the like. Plasticizers and other viscosity-reducing aids need not be used in conjunction with these resins.