sign on, 1  to employ; hire. 2  to bind oneself to work, as by signing a contract: He signed on as a pitcher with a major-league team. 3  to start radio or television broadcasting, especially at the beginning of the day. 4  Computers. log1 (def 17a).
FROM FIBER TO FABRIC: ACETATE INTRODUCTION Initially invented in Europe as a varnish for airplane wings, acetate was first produced in the United States in 1924 making it the second oldest manufactured fiber.
Acetone is often the primary (or only) component in nail polish remover. Acetone is also used as a superglue remover. Small quantities of acetone added to fuel may improve economy and engine performance, though this is only anecdotal and refuted by most automotive engineers.cetone is also used to make plastic, fibers, drugs, and other chemicals. Uses An important industrial use for acetone involves its reaction with phenol for the manufacture of bisphenol A. Bisphenol A is an important component of many polymers such as polycarbonates, polyurethanes and epoxy resins.