A waterproofing membrane composition comprising PVB, polymer modified bitumen, a compatibilizing agent selected from the group consisting of a succinate mixed ester of benzyl and of branched nonyl or decyl, a bis(ethoxylated alkyl) succinate, a composition comprising aliphatic polycarboxylic acid esters of formula R′—X—[O—C(O)—R]n, or a mixture thereof.

A tack coat includes a first phase and a second phase. The first phase includes asphalt, and the second phase includes an emulsifier and a rheology modifier. Optionally, the second phase also includes a material insoluble in the water. The pH of the second phase can be between 1-3, 6-8, or 9-13.

Disclosed herein are asphalt compositions. In some embodiments, the asphalt compositions can include asphalt, a polymer, and a basic salt such as aluminum sulfate. In some embodiments, the asphalt compositions can include asphalt, a polymer, and an inorganic acid such as phosphoric acid. The asphalt compositions can include asphalt in an amount of from 50 wt % to 99.9 wt %, based on the weight of the asphalt composition. In some embodiments, the asphalt compositions can include a styrene-butadiene copolymer in an amount of from 0.05 wt % to 10 wt %, based on the weight of the asphalt composition. The basic salt can be present in an amount of from 0.01 wt % to 5 wt %, based on the weight of the asphalt compositions. The acid can be present in an amount of from 0.005 wt % to 0.1 wt %, based on the weight of the asphalt compositions. Methods of making and using the asphalt compositions are also disclosed.

The invention relates to a bitumen/polymer composition containing at least one elastomer of the heat-crosslinkable S-B-S type, where S is a styrene or other vinylaromatic polymer block, and B is a polybutadiene block, the composition comprising an adjuvant of the olefin polymer type and having improved mechanical properties. The invention also relates to the use of the compositions in the fields of road applications such as hot mixes; warm mixes; cold mixes, for example cold-cast mixes or emulsion gravel; or surface dressings, for example fluxed bitumen or emulsions; and in the fields of industrial applications, for example in the production of inside and outside coatings.

A polymer-modified asphalt composition comprises or is produced from asphalt and a high-melt flow index ethylene co/terpolymer comprising copolymerized units derived from ethylene, an epoxy-containing comonomers, and optionally a third monomer selected from the group consisting of acrylates, methacrylates, vinyl esters, and the like. The modified asphalt composition may further comprise a nonreactive polymer, such as a styrene/conjugated-diene block copolymer, and a co-reactant, such as an acid or an acid anhydride. Further provided are processes for producing the polymer-modified asphalt composition, and paving and roofing materials that comprise the polymer-modified asphalt composition.

A subject of the present invention is a composition comprising: at least one recycled bituminous product, at least one epoxidized oil, and at least one bitumen additive.

The invention also relates to the use thereof for the preparation of a mix. Another subject of the invention is a mix comprising the composition according to the invention.

The present invention relates to a process for the preparation of an asphalt mix composition, said process comprising: (1) providing an asphalt composition and heating said composition to a temperature in the range of from 110 to 200° C.; (2) providing a granular material and heating said material to a temperature in the range of from 110 to 240° C.; (3) providing one or more thermosetting reactive compounds; (4) adding the one or more thermosetting reactive compounds provided in (3) to the asphalt composition obtained in (1) and homogenizing the mixture for a duration in the range of from 2 to 180 s; (5) adding the mixture obtained in (4) to the granular material obtained in (2) and homogenizing the slurry for a duration in the range of from 5 to 180 s. Further, the present invention relates to an asphalt mix composition obtained or obtainable by said process and its use.

This invention involves the addition of ester bottoms to an asphalt paving composition to improve the usable temperature range (UTR). The ester bottoms are a byproduct of refining a feedstock containing all or a portion of vegetable oil or animal fat.

The present invention provides an asphalt composition obtained by blending an asphalt and an addition polymerization-type polymer, the addition polymerization-type polymer having a hydroxyl value of 10 mgKOH/g or more and 60 mgKOH/g or less and having a weight average molecular weight (M.sub.w) of 2,500 or more and 70,000 or less.

Thermoplastic compositions useful for sealing longitudinal joints of substrates, for example, roadways and pavement, are provided herein. Formulations including the composition and methods of using the thermoplastic composition to seal longitudinal joints are also disclosed.