Synthetic adhesives are based on elastomers, thermoplastics, emulsions, and thermosets. Sensitive polymers include thermoplastics and speciality fibers like aramids. Fluoropolymers may be mechanically characterized as thermosets or thermoplastics. PVDF is a thermoplastic that expresses versatility for applications similar to other thermoplastics, particularly fluoropolymers. Plasticizers are oligomeric esters widely used to soften thermoplastics such as PVC. BASF's plastic products include high-performance materials in thermoplastics, foams, and urethanes. Conductive polymers are generally not thermoplastics, "i.e.", they are not thermoformable. Polyesters as thermoplastics may change shape after the application of heat. One of the most widely used thermoplastics is a polyamide polymer nylon. Vitrimers are a subset of polymers that bridge the gap between thermoplastics and thermosets. Many thermoplastics can also be welded using chemical solvents. Many polymer thermoplastics familiar from everyday use are glasses. Thermochromism can appear in thermoplastics, duroplastics, gels or any kind of coatings. As an alternative to thermoplastics, household paint or epoxy can be used to mark crosswalks. The table below provides a selection of solvents commonly used for bonding specific thermoplastics.