Ethyl cellulose compositions

摘要

Ethyl cellulose is plasticized with an oxazoline of formula wherein R is alkyl or alkenyl of 8-24 C atoms and R1 is -CH2-R2 or wherein R2 is alkyl or alkenyl of 7-23 C atoms. Exemplified are 2-heptadecyl- and 2-heptadecenyl - 4,4 - bis - (octadecanoyloxymethyl)-2 - oxazolines and 2 - (11 - dodecenylvinyl)-4,4 - bis - (tridecanoyloxymethyl) - 2 - oxazoline; others are specified. The ethyl cellulose may have a D.S. of 2.0-2.75 and be of viscosity grade 10, 100 or 200. In examples, films are cast from plasticized ethyl cellulose in toluene/ethanol solution.ALSO:Compounds of the formula wherein R is alkyl or alkenyl of 8-24 C atoms, and R1 is the radical -CH2-R2 or wherein R2 is alkyl or alkenyl of 7-23 C atoms, may be prepared by reaction of 3 moles of a 9-25 C unsaturated or saturated fatty acid with 1 mole of tris(hydroxymethyl) amino methane, under conditions to liberate 4 moles of water to give the product where R1 is -CH2-R2; these may be converted to the vinylic form by reaction with HCHO. Specified products are 2-hepta-decyl - 4,4 - bis(octadecanoyloxymethyl) -, 2 - heptadecenyl - 4,4 - bis(octadecenoyloxymethyl) -, 2 - (l1 - heptadecenylvinyl) - 4,4 - bis(octadecanoyloxymethyl) -, 2 - decyl - 4,4 - bis(hendecanoyloxymethyl) -, 2 - (l1 - decylvinyl) - 4,4 - bis(hendecanoyloxymethyl) -, 2 - dodecyl - 4,4 - bis(tridecanoyloxymethyl)-, 2 - (l1 - dodecylvinyl) - 4,4 - bis(tridecanoyloxymethyl) -2 - (l1 - octylvinyl) - 4,4 - bis(nonanoyloxymethyl)-, and 2 - octyl - 4,4 - bis(nonanoyloxymethyl - 2 - oxazolines.