Polyurethane vs. Lacquer

Polyurethanenoun

(organic chemistry) Any of various polymeric resins containing urethane links; used in very many industrial and domestic applications.

Polyurethanenoun

any polymer containing [-NH.CO.O-] linkages; such polymers are much used as the basis of light but rigid foams for packaging (polyurethane foam) and for hard coatings, as on floors.

Polyurethanenoun

any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber

Polyurethanenoun

a synthetic resin in which the polymer units are linked by urethane groups, used chiefly as constituents of paints, varnishes, adhesives, and foams

Polyurethaneverb

coat with polyurethane paint or varnish

Polyurethane

Polyurethane (often abbreviated PUR and PU) is a polymer composed of organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethane is produced from a wide range of starting materials (monomers) and is therefore a class of polymers, rather than a distinct compound.

Lacquernoun

A glossy, resinous material used as a surface coating; either a natural exudation of certain trees, or a solution of nitrocellulose in alcohol, etc.

Lacquernoun

A similar finish, baked onto the inside of cans.

Lacquerverb

To apply a lacquer to something or to give something a smooth, glossy finish.

Lacquernoun

A varnish, consisting of a solution of shellac in alcohol, often colored with gamboge, saffron, or the like; - used for varnishing metals, papier-maché, and wood. The name is also given to varnishes made of other ingredients, esp. the tough, solid varnish of the Japanese, with which ornamental objects are made.

Lacquerverb

To cover with lacquer.

Lacquernoun

a black resinous substance obtained from certain trees and used as a natural varnish

Lacquernoun

a hard glossy coating

Lacquerverb

coat with lacquer;

Lacquer

The term lacquer is used for a number of hard and potentially shiny finishes applied to materials such as wood or metal. These fall into a number of very different groups.