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.
Vinyl acetate isnât the only chemical that acetic acid is useful for producing. Itâs also useful for producing acetate esters, which include cellulose acetate, which can be used to make some photographic films (a use that has presumably declined now that digital photography has become prevalent).his reaction is a result of the neutralisation occurring between the acetic acid in the vinegar and the basic sodium bicarbonate. It produces carbon dioxide gas as one of the products, which leads to the bubbling effect observed.