A group of high molecular weight polymers formed by the polymerization of propylene.
Tag: chemicals
Chlorinated Polyethylene
A thermoplastic material, used for single-ply roof membranes, composed of high molecular weight polyethylene that has been chlorinated with a process that yields a flexible rubber-like material.
Compounded Thermoplastics
a category of roofing membranes made by blending thermoplastic resins with plasticizers, various modifiers, stabilizers, flame retardants, UV absorbers, fungicides and other proprietary substances alloyed with proprietary organic polymers.
Copolymer
The product of polymerization of two or more substances (as two different isomers) together.
Copolymerization
A chemical reaction that results in the bonding of two or more dissimilar monomers to produce large, long-chain molecules that are copolymers.
Cross-linking
The formation of chemical bonds between polymeric chains. Cross-linking of rubber is referred to as vulcanization or “curing.”
Cure
A process whereby a material is caused to form permanent molecular linkages by exposure to chemicals, heat, pressure and/or weathering.
Elastomer
A macromolecular material that returns rapidly to its approximate initial dimensions and shape after substantial deformation by a weak stress and subsequent release of that stress.
Flame Retardant
A chemical used to impart flame resistance
Mineral Stabilizer
A fine, water-insoluble inorganic material, used in a mixture with solid or semi-solid bituminous materials.
Parting Agent
A material applied to one or both surfaces of a sheet to prevent blocking.
Thermoset
A class of polymers that, when cured using heat, chemical, or other means, changes into a substantially infusible and insoluble material.
Thinner
(1) a volatile liquid added to an adhesive or coating material to modify the consistency or other properties; (2) a liquid used to clean equipment or other surfaces.