Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1982-06-04
1983-12-13
Willis, Jr., P. E.
Compositions
Water-softening or purifying or scale-inhibiting agents
252132, C11D 350
Patent
active
044204116
ABSTRACT:
Described are acylated derivatives of triisobutylene defined according to the generic structures: ##STR1## wherein, in each of the molecules one of the dashed lines represents a carbon-carbon double bond and each of the other of the dashed lines represents a carbon-carbon single bond; and wherein, in each of the molecules R.sub.3 represents methyl or ethyl; uses thereof in augmenting or enhancing the aroma or perfume compositions, colognes and perfumed articles (e.g., solid or liquid anionic, cationic, nonionic, zwitterionic detergents, cosmetic powders, hair sprays and the like) as well as processes for preparing same by first trimerizing isobutylene to form one or more compounds defined according to at least one of the structures: ##STR2## wherein in each of the molecules one of the dashed lines represents a carbon-carbon double bond and each of the other dashed lines represent carbon-carbon single bonds; and then reacting one or more of these trimerized isobutylene derivatives with an acyl anhydride having the structure: ##STR3## wherein, R.sub.1 and R.sub.2 are the same or different and each represents methyl or ethyl in the presence of a Lewis acid catalyst such as boron trifluoride etherate or stannic chloride thereby forming the acylated branched chain ketones of our invention defined according to at least one of the structures: ##STR4## .
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patent: 4315952 (1982-02-01), Boden
Boden Richard M.
Tyszkiewicz Theodore J.
International Flavors & Fragrances Inc.
Liberman Arthur L.
Willis, Jr. P. E.
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