| 摘要 |
<p>Fluorinated lubricants comprising "pour point depressant" additives of structure:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ X 1 -O (CF 2 O) n (CF 2 CF 2 O) m (CF 2 CF 2 CF 2 O) p (CF 2 CF 2 CF 2 CF 2 O) q -X 2 €ƒ€ƒ€ƒ€ƒ€ƒ(I)
wherein
-X 1 , X 2 , have formula -(CF 2 ) z CF 3 wherein z is an integer from 0 to 3; n is an integer between 1 and 200; m is an integer between 0 and 200; p,q are integers between 0 and 10; (p+q)/(p+q+m+n) s 0.05; m/n s 0.7; the number average molecular weight of (I) is between 1,000 and 10,000.</p> |
