A bituminous composition is used as an adhesive binder. The bituminous composition has at least one acidic additive of general formula (I): R(COOH)z in which R is a linear or branched, saturated or unsaturated hydrocarbon-based chain having from 4 to 68 carbon atoms, preferably from 4 to 54 carbon atoms, more preferentially from 4 to 36 carbon atoms and z is an integer ranging from 1 to 4, preferably from 2 to 4.

A roofing system includes a roofing membrane. The roofing membrane has a surface energy of 40 mN/m or less. The roofing system includes a roofing substrate. The roofing system includes an adhesive disposed between the roofing membrane and the roofing substrate. The adhesive includes a styrenic block copolymer. The styrenic block copolymer is present in an amount of 0.5 wt. % to 30 wt. % based on a total weight of the adhesive. The adhesive includes asphalt. The asphalt is present in an amount of 70 wt. % to 99.5 wt. % based on the total weight of the adhesive. A ratio of the styrenic block copolymer to the asphalt in the adhesive is 1:11 to 1:3.

A roofing system includes a roofing membrane. The roofing membrane has a surface energy of 40 mN/m or less. The roofing system includes a roofing substrate. The roofing system includes an adhesive disposed between the roofing membrane and the roofing substrate. The adhesive includes a styrenic block copolymer. The styrenic block copolymer is present in an amount of 0.5 wt. % to 30 wt. % based on a total weight of the adhesive. The adhesive includes asphalt. The asphalt is present in an amount of 70 wt. % to 99.5 wt. % based on the total weight of the adhesive. A ratio of the styrenic block copolymer to the asphalt in the adhesive is 1:11 to 1:3.

A partially hydrogenated block copolymer of the present invention includes: a polymer block (A) containing a vinyl aromatic monomer unit as a main component: and a polymer block (B) containing a conjugated diene monomer unit, wherein in a differential molecular weight distribution (B) of a degradation product of the partially hydrogenated block copolymer obtained by an ozone degradation method, a distribution of degree of hydrogenation H, which is given by a maximum peak height in a region of a molecular weight of 800 or more and 3,000 or less, is 0.01 to 0.5.

To provide a hot melt adhesive having excellent coatability and adhesiveness to a member of a disposable product, excellent storage stability, and both having high natural resin use ratio and low odor; and a disposable product obtained by using the hot melt adhesive. A hot melt adhesive comprising (A) a thermoplastic block copolymer which is a copolymer of vinyl-type aromatic hydrocarbons and conjugated diene compounds, (B) a tackifying resin and (C) a wax, wherein the tackifying resin (B) comprises (B1) a natural resin having an acid value of 20 mg KOH/g or less.

To provide a hot melt adhesive having excellent coatability and adhesiveness to a member of a disposable product, excellent storage stability, and both having high natural resin use ratio and low odor; and a disposable product obtained by using the hot melt adhesive. A hot melt adhesive comprising (A) a thermoplastic block copolymer which is a copolymer of vinyl-type aromatic hydrocarbons and conjugated diene compounds, (B) a tackifying resin and (C) a wax, wherein the tackifying resin (B) comprises (B1) a natural resin having an acid value of 20 mg KOH/g or less.

Materials and methods for mitigating passive intermodulation. A membrane for reducing passive intermodulation includes a first polymeric layer, a second polymeric layer, and a continuous metal layer encapsulated between the first and second polymeric layers. A self-adhesive radio frequency barrier tape includes a waterproof polymeric top layer, a metal-containing layer adhered by an adhesive layer to the polymeric top layer, a pressure sensitive adhesive layer adhered to the metal-containing layer, and a release liner on a bottom surface of the pressure sensitive adhesive layer. A method of mitigating passive intermodulation includes passing a probe over an area of interest, the probe being sensitive to an intermodulation frequency of interest, and identifying a suspected source of passive intermodulation when the amplitude of the probe output exceeds a threshold at the frequency of interest. The method further includes covering the suspected passive intermodulation source with a radio frequency barrier material.

Materials and methods for mitigating passive intermodulation. A membrane for reducing passive intermodulation includes a first polymeric layer, a second polymeric layer, and a continuous metal layer encapsulated between the first and second polymeric layers. A self-adhesive radio frequency barrier tape includes a waterproof polymeric top layer, a metal-containing layer adhered by an adhesive layer to the polymeric top layer, a pressure sensitive adhesive layer adhered to the metal-containing layer, and a release liner on a bottom surface of the pressure sensitive adhesive layer. A method of mitigating passive intermodulation includes passing a probe over an area of interest, the probe being sensitive to an intermodulation frequency of interest, and identifying a suspected source of passive intermodulation when the amplitude of the probe output exceeds a threshold at the frequency of interest. The method further includes covering the suspected passive intermodulation source with a radio frequency barrier material.

Materials and methods for mitigating passive intermodulation. A membrane for reducing passive intermodulation includes a first polymeric layer, a second polymeric layer, and a continuous metal layer encapsulated between the first and second polymeric layers. A self-adhesive radio frequency barrier tape includes a waterproof polymeric top layer, a metal-containing layer adhered by an adhesive layer to the polymeric top layer, a pressure sensitive adhesive layer adhered to the metal-containing layer, and a release liner on a bottom surface of the pressure sensitive adhesive layer. A method of mitigating passive intermodulation includes passing a probe over an area of interest, the probe being sensitive to an intermodulation frequency of interest, and identifying a suspected source of passive intermodulation when the amplitude of the probe output exceeds a threshold at the frequency of interest. The method further includes covering the suspected passive intermodulation source with a radio frequency barrier material.

The aim of the invention is to provide, at a lower cost, novel primary mixtures that can be used for preparing polymer bitumens. For this purpose, the primary mixture according to the invention comprises: (a) at least 25% by weight, preferably 25 to 80% by weight, of polymer, (b) at least one thermoplastic tackifying resin having an average molecular mass of 100 to 3,000 g/mol, (c) and/or one or more mono-alkylpreferably methylesters of fatty acids at C16-C18, in particular sunflower oil, linseed oil, rapeseed oil, soybean oil, and/or sunflower oil that is optionally isomerized; the ester (c) necessarily being present when the tackifying resin (b) has an acid value measured according to standard NF EN ISO 660 of less than 50 mg KOH/g. The invention also concerns the polymer bitumens, emulsions and coatings/coated products obtained from this primary mixture, as well as the methods for preparing same.