prov:value
| - wherein R10 is an alkyl or alkenyl group having from about 10 to 24, preferably 12 to 20, especially from 16 to 18 carbon atoms, the groups R9 which may be the same or different, each represent hydrogen, a (C2H4O)pH, or a (C3H6O)qH, or a C1-3 alkyl group where p and q may each be 0 or a bumber such that (p+q) does not exceed 25, n is an integer from 2 to 6, preferably 3, m is from about 1 to 9, pr
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