| 摘要 |
<p>2-Methacryloxyacetophenone is prepared by stirring 2-hydroxyacetophenone and methacrylyl chloride in aqueous sodium hydroxide, dissolving the resulting oil phase in ether, extracting with water, drying, stripping and distilling at 110-112 DEG C. 2-acryloxyacetophenone, 4-acryloxyacetophenone and 4-methacryloxyaceto-phenone may be prepared by similar methods.ALSO:A copolymer of ethylene with 0.01 to 10 mole per cent. of at least one substituted acetophenone of formula <FORM:0974402/C3/1> wherein R1 is H or Me, may be prepared by polymerization at -40 DEG C. to 300 DEG C. and at 1 to 3,000 atmos. in the presence of a peroxide an azo compound or a co-ordination catalyst. The copolymers obtained may be blended with other polymers, e.g. polyethylene or polypropylene, and/or may be cross-linked by radiation of wavelength 2000 to 7000</>rA, optionally in the presence of a polar vinylidene monomer whereby a graft polymer is obtained. The products may be formed into film, filament, tube or rod and find application in packaging potato chips, meat or bacon, as sheet for photo reproduction and as magnetic tape base.</p> |
