Bitumen process

Bitumen process
Bitumen process Bi*tu"men proc"ess (Photog.) Any process in which advantage is taken of the fact that prepared bitumen is rendered insoluble by exposure to light, as in photolithography. [Webster 1913 Suppl.]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • bitumen process — noun : a photographic process in which advantage is taken of the fact that prepared bitumen is rendered insoluble in benzene or other organic solvents by exposure to light (as in photolithography) …   Useful english dictionary

  • Bitumen of Judea — The photographical process known as Bitumen of Judea is quite possibly the oldest modern photographing technique. The technique was first used by French lithographer Nicéphore Niépce in 1826. Using a tarlike material that covered a pewter plate,… …   Wikipedia

  • asphalt process — noun : bitumen process …   Useful english dictionary

  • Coldry Process — is a coal upgrading technology developed in Victoria, Australia by Environmental Clean Technologies Limited[1] to specifically beneficiate low rank brown coal (lignite) and sub bituminous coal by removing natural high moisture content and certain …   Wikipedia

  • Niepce's process — Niep ce s proc ess (Photog.) A process, now no longer used, invented by J. N. Niepce, a French chemist, in 1829. It depends upon the action of light in rendering a thin layer of bitumen, with which the plate is coated, insoluble. [Obsolescent]… …   The Collaborative International Dictionary of English

  • Oil sands — The Athabasca oil sands in Alberta, Canada, are a very large source of bitumen, which can be upgraded to synthetic crude oil. Bituminous sands, colloquially known as oil sands or tar sands, are a type of unconventional petroleum deposit. The… …   Wikipedia

  • heavy oil and tar sand — Introduction       crude oils (crude oil) below 20° API gravity are usually considered to be heavy. The lighter conventional crudes are often waterflooded to enhance recovery. The injection of water into the reservoir helps to maintain reservoir… …   Universalium

  • History of the petroleum industry in Canada (oil sands and heavy oil) — Canada s oil sands and heavy oil resources are among the world s great petroleum deposits. They include the vast oil sands of northern Alberta, and the heavy oil reservoirs that surround the small city of Lloydminster, which sits on the border… …   Wikipedia

  • roads and highways — ▪ transportation Introduction       traveled way on which people, animals, or wheeled vehicles move. In modern usage the term road describes a rural, lesser traveled way, while the word street denotes an urban roadway. Highway refers to a major… …   Universalium

  • Steam assisted gravity drainage — (SAGD) is an enhanced oil recovery technology for producing heavy crude oil and bitumen. It is an advanced form of steam stimulation in which a pair of horizontal wells is drilled into the oil reservoir, one a few metres above the other. Low… …   Wikipedia

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