The present disclosure provides epoxy adhesive compositions with increased adhesion to surfaces, including metal surfaces, comprising a catechol modifier and methods of use thereof.

The present disclosure provides epoxy adhesive compositions with increased adhesion to surfaces, including metal surfaces, comprising a catechol modifier and methods of use thereof.

Disclosed is a compound of formula (I) below:

##STR00001##

in which: T is chosen from the group consisting of CN.sup.+—O.sup.−, CH═NOH and CHO; A represents a C.sub.6-C.sub.14 arenediyl ring optionally substituted with one or more identical or different, preferably saturated, linear or branched aliphatic hydrocarbon chains; represents a divalent C.sub.5-C.sub.12 hydrocarbon group optionally comprising one or more heteroatoms; and X.sub.1, X.sub.2 and X.sub.3, which may be identical or different, represent a hydrogen atom, a C.sub.1-C.sub.6 alkyl or a C.sub.6-C.sub.14 aryl. Also disclosed is a process for synthesizing compounds of formula (I), a modified polymer obtained by grafting the compound of formula (I) with T=CN.sup.+—O.sup.−, a composition based on the modified polymer and an additive, and to a composition based on at least one additive and at least one compound of formula (I) with T=CN.sup.+—O.sup.−.

Disclosed is a compound of formula (I) below:

##STR00001##

in which: T is chosen from the group consisting of CN.sup.+—O.sup.−, CH═NOH and CHO; A represents a C.sub.6-C.sub.14 arenediyl ring optionally substituted with one or more identical or different, preferably saturated, linear or branched aliphatic hydrocarbon chains; represents a divalent C.sub.5-C.sub.12 hydrocarbon group optionally comprising one or more heteroatoms; and X.sub.1, X.sub.2 and X.sub.3, which may be identical or different, represent a hydrogen atom, a C.sub.1-C.sub.6 alkyl or a C.sub.6-C.sub.14 aryl. Also disclosed is a process for synthesizing compounds of formula (I), a modified polymer obtained by grafting the compound of formula (I) with T=CN.sup.+—O.sup.−, a composition based on the modified polymer and an additive, and to a composition based on at least one additive and at least one compound of formula (I) with T=CN.sup.+—O.sup.−.

Disclosed is a compound of formula (I) below:

##STR00001##

in which: T is chosen from the group consisting of CN.sup.+—O.sup.−, CH═NOH and CHO; A represents a C.sub.6-C.sub.14 arenediyl ring optionally substituted with one or more identical or different, preferably saturated, linear or branched aliphatic hydrocarbon chains; represents a divalent C.sub.5-C.sub.12 hydrocarbon group optionally comprising one or more heteroatoms; and X.sub.1, X.sub.2 and X.sub.3, which may be identical or different, represent a hydrogen atom, a C.sub.1-C.sub.6 alkyl or a C.sub.6-C.sub.14 aryl. Also disclosed is a process for synthesizing compounds of formula (I), a modified polymer obtained by grafting the compound of formula (I) with T=CN.sup.+—O.sup.−, a composition based on the modified polymer and an additive, and to a composition based on at least one additive and at least one compound of formula (I) with T=CN.sup.+—O.sup.−.

A polyvinyl chloride-asphaltene composite and a method of making the polyvinyl chloride-asphaltene composite is disclosed. The composite includes a polyvinyl chloride (PVC) polymer in an amount of 90 to 99.5 wt.%, based on a total weight of the polyvinyl chloride-asphaltene composite, and a filler in an amount of 10 wt.% or less, based on a total weight of the polyvinyl chloride-asphaltene composite. The filler is an asphaltene, the asphaltene is the only filler present, and the asphaltene is uniformly dispersed within a matrix of the PVC polymer. The polyvinyl chloride-asphaltene composite of the present disclosure demonstrates enhanced thermal stability and improved mechanical tensile or thermo-mechanical properties.

A polyvinyl chloride-asphaltene composite and a method of making the polyvinyl chloride-asphaltene composite is disclosed. The composite includes a polyvinyl chloride (PVC) polymer in an amount of 90 to 99.5 wt.%, based on a total weight of the polyvinyl chloride-asphaltene composite, and a filler in an amount of 10 wt.% or less, based on a total weight of the polyvinyl chloride-asphaltene composite. The filler is an asphaltene, the asphaltene is the only filler present, and the asphaltene is uniformly dispersed within a matrix of the PVC polymer. The polyvinyl chloride-asphaltene composite of the present disclosure demonstrates enhanced thermal stability and improved mechanical tensile or thermo-mechanical properties.

The invention relates to a vehicle utilizing a LiDAR sensor system for driver assistance systems. A composition consisting of a thermoplastic material based on polycarbonate is used here for forming the substrate layer of a cover for the sensor with respect to the surroundings. The cover has a polysiloxane-based topcoat layer comprising a combination of organically modified silane with a silica sol, the silicon dioxide having a d90 particle size of less than 0.50 micron, in order to achieve high abrasion resistance and weathering stability.

The invention relates to a vehicle utilizing a LiDAR sensor system for driver assistance systems. A composition consisting of a thermoplastic material based on polycarbonate is used here for forming the substrate layer of a cover for the sensor with respect to the surroundings. The cover has a polysiloxane-based topcoat layer comprising a combination of organically modified silane with a silica sol, the silicon dioxide having a d90 particle size of less than 0.50 micron, in order to achieve high abrasion resistance and weathering stability.

Provided is an electrically conductive resin composition with which the characteristics inherent in a thermoplastic resin are easily retained and which exhibits more excellent electrical conductivity even if the blending amount of an electrically conductive filler is small. This electrically conductive resin composition contains a thermoplastic resin, such as a polycarbonate or a polyolefin, and an electrically conductive filler, such as a carbon nanotube. This electrically conductive resin composition further contains a dye, such as a perinone-based dye or a disazo-based dye, which is a component for improving electrical conductivity, and this electrically conductive resin composition can be obtained by kneading or molding a raw material mixture containing a thermoplastic resin, an electrically conductive filler, and a dye under a condition of a temperature equal to or higher than the melting point of the thermoplastic resin.