any synthetic material, such as polyethylene, that can be molded when hot but becomes hard on cooling

(mineralogy) copaline

(mineralogy) copaline

plural of resin acid

Any of a class of polyether resins, used for coatings, adhesives and foam.

A mixture of gum and resin secreted by a plant.

(organic chemistry) Any of many terpenoid acids produced by the resin ducts of conifers.

(organic chemistry) Any of a range of thermosetting plastics made by reaction of a phenol with formaldehyde

(analytical chemistry) An insoluble matrix of small beads having a charged surface; used as an artificial zeolite in water softeners and in ion exchange chromatography.

(chemistry) Any of several of the condensation products of the reaction between urea and formaldehyde (and their derivatives) used as a thermosetting material.