| 摘要 |
1,224,129. Polyethylene glycol monomethyl ether carbonates. DOW CHEMICAL CO. 27 Nov., 1969 [16 Dec., 1968], No. 58079/69. Heading C2C. [Also in Division C5[ The invention comprises compounds of the formula They may be obtained by reacting a polyethylene glycol monomethyl ether with phosgene or a dialkyl carbonate and separating the reaction product from the mixture. Examples are given for the production of the compounds. They are useful as synthetic lubricants and in brake fluids. |
