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A platform for research: civil engineering, architecture and urbanism
Mezclas primarias de betún-polímero, útiles para la preparación de aglutinantes de betún-polímero, productos obtenidos a partir de estas mezclas primarias
Mezcla primaria útil para la preparación de composiciones de betún/polímero, comprendiendo dicha mezcla primaria: (a) al menos 25% en peso, preferiblemente de 25 a 80% en peso, de copolímero de estireno y butadieno de estructura molecular lineal o en estrella, que tiene un contenido de unidades estirénicas comprendido entre 5% y 50% en masa, con respecto a la masa total de las unidades de butadieno; (c) y uno o más (mono)ésteres alquílicos de ácidos grasos C16-C18.
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-alkyl—preferably methyl—esters 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.
Mezclas primarias de betún-polímero, útiles para la preparación de aglutinantes de betún-polímero, productos obtenidos a partir de estas mezclas primarias
Mezcla primaria útil para la preparación de composiciones de betún/polímero, comprendiendo dicha mezcla primaria: (a) al menos 25% en peso, preferiblemente de 25 a 80% en peso, de copolímero de estireno y butadieno de estructura molecular lineal o en estrella, que tiene un contenido de unidades estirénicas comprendido entre 5% y 50% en masa, con respecto a la masa total de las unidades de butadieno; (c) y uno o más (mono)ésteres alquílicos de ácidos grasos C16-C18.
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-alkyl—preferably methyl—esters 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.
Mezclas primarias de betún-polímero, útiles para la preparación de aglutinantes de betún-polímero, productos obtenidos a partir de estas mezclas primarias
LOUP FRÉDÉRIC (author)
2021-07-27
Patent
Electronic Resource
Spanish
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