Japan black (also called black japan) is a

lacquer Lacquer is a type of hard and usually shiny coating or finish applied to materials such as wood or metal. It is most often made from resin extracted from trees and waxes and has been in use since antiquity. Asian lacquerware, which may be c ...

varnish Varnish is a clear transparent hard protective coating or film. It is not a stain. It usually has a yellowish shade from the manufacturing process and materials used, but it may also be pigmented as desired, and is sold commercially in variou ...

suitable for many substrates but known especially for its use on iron and steel. It is so named due to the history of black lacquer being associated in the West with products from

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...

.Niimura, Noriyasu; Miyakoshi, Tetsuo (2003) Characterization of Natural Resin Films and Identification of Ancient Coating . ''J. Mass Spectrom. Soc. Jpn''. 51, 440
JOI:JST.JSTAGE/massspec/51.439
/ref> Its high

bitumen Asphalt, also known as bitumen (, ), is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term a ...

content provides a protective finish that is durable and dries quickly. This allowed japan black to be used extensively in the production of automobiles in the early 20th century in the United States. It can also be called japan lacquer and Brunswick black. Used as a verb, ''japan'' means "to finish in japan black". Thus

japanning Japanning is a type of finish that originated as a European imitation of East Asian lacquerwork. It was first used on furniture, but was later much used on small items in metal. The word originated in the 17th century. American work, with ...

and ''japanned'' are terms describing the process and its products.

Ingredients

Japan black consists mostly of an

asphalt Asphalt, also known as bitumen (, ), is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term ...

ic base dissolved in

naphtha Naphtha ( or ) is a flammable liquid hydrocarbon mixture. Mixtures labelled ''naphtha'' have been produced from natural gas condensates, petroleum distillates, and the distillation of coal tar and peat. In different industries and regions ' ...

turpentine Turpentine (which is also called spirit of turpentine, oil of turpentine, terebenthene, terebinthine and (colloquially) turps) is a fluid obtained by the distillation of resin harvested from living trees, mainly pines. Mainly used as a special ...

, sometimes with other varnish ingredients, such as

linseed oil Linseed oil, also known as flaxseed oil or flax oil (in its edible form), is a colourless to yellowish oil obtained from the dried, ripened seeds of the flax plant (''Linum usitatissimum''). The oil is obtained by pressing, sometimes followed by ...

. It is applied directly to metal parts, and then baked at about 200°C (400°F) for up to an hour.

Automobile use

Japan black's popularity was due in part to its durability as an automotive finish. However, it was the ability of japan black to dry quickly that made it a favorite of early mass-produced automobiles such as

Henry Ford Henry Ford (July 30, 1863 – April 7, 1947) was an American industrialist, business magnate, founder of the Ford Motor Company, and chief developer of the assembly line technique of mass production. By creating the first automobile that ...

Model T The Ford Model T is an automobile that was produced by Ford Motor Company from October 1, 1908, to May 26, 1927. It is generally regarded as the first affordable automobile, which made car travel available to middle-class Americans. The relati ...

. While other colors were available for automotive finishes, early colored variants of automotive lacquers could take up to 14 days to cure, whereas japan black would cure in 48 hours or less. Thus variously colored pre-1925 car bodies were usually consigned to special orders, or custom-bodied luxury automobiles. The development of quick-drying nitrocellulose lacquers ( pyroxylins) which could be colored to suit the needs of the buying public in the 1920s led to the disuse of japan black by the end of the 1920s. In 1924, General Motors introduced "True Blue" Duco (a product of

DuPont DuPont de Nemours, Inc., commonly shortened to DuPont, is an American multinational chemical company first formed in 1802 by French-American chemist and industrialist Éleuthère Irénée du Pont de Nemours. The company played a major role in ...

) nitrocellulose lacquer on its 1925 model Oakland automobile marque products.

Ford's formulations

Ford used two formulations of japan black, F-101 and F-102 (renamed M-101 and M-102 after March 15, 1922). F-101, the "First Coat Black Elastic Japan", was used as the basic coat applied directly to the metal, while F-102, "Finish Coat Elastic Black Japan", was applied over the first layer. Their compositions were similar: 25–35%

and 10%

with

lead Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, ...

and

iron Iron () is a chemical element with symbol Fe (from la, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in ...

-based dryers, dissolved in 55% thinners (mineral spirits,

turpentine substitute White spirit (AU, UK & Ireland)Primarily in the United Kingdom and Australia. In New Zealand "white spirit" can also refer to Coleman fuel (white gas). or mineral spirits (US, Canada), also known as mineral turpentine (AU/NZ), turpentine substitu ...

). The F-101 also had 1–3% of

carbon black Carbon black (subtypes are acetylene black, channel black, furnace black, lamp black and thermal black) is a material produced by the incomplete combustion of coal and coal tar, vegetable matter, or petroleum products, including fuel oil, fluid ...

added as a

pigment A pigment is a colored material that is completely or nearly insoluble in water. In contrast, dyes are typically soluble, at least at some stage in their use. Generally dyes are often organic compounds whereas pigments are often inorganic compou ...

. The asphalt used in the Ford formulations was specified to be Gilsonite. This has long been used in formulations of paint for use on ironware as it increases the elasticity of the paint layer, allowing it to adhere to steel subjected to vibration, deformation and thermal expansion without cracking or peeling. It is also cheap, yields a glossy dark surface, and acts as a curing agent for the oil.

References

{{CarDesign nav Painting materials Ford Motor Company Paints Auto parts

Ingredients

Automobile use

Ford's formulations

See also

References