US 6,566,319 B1 · Cleaning products comprising improved alkylarylsulfonate surfactants prepared via vinylidene olefins and processes for preparation thereof

Abstract

Cleaning compositions, especially laundry detergents and the like, comprising (i) modified alkylarylsulfonate surfactants, e.g., modified alkylbenzenesulfonates, which are the product of particular processes and (ii) cleaning adjuncts such as enzymes and bleaches. Processes for making the cleaning products, including processes comprising vinylidene olefin production, alkylation of arenes, sulfonation and domestic cleaning product formulation. VO production is used to introduce particular limited branching into an alpha-olefinic feedstock which, converted to dimer form, has from about 10 to about 16, preferably from about 12 to about 14 carbon atoms. Preferred processes maximize the amount of vinylidene olefin useful for detergent manufacture, and minimize deep internal olefin production. Further, an alkylation step, preferably having an internal isomer selectivity of from 0 to no more than about 40 is used, in which the VO monoalkylates arenes such as benzene, in presence of an alkylation catalyst preferably comprising an at least partially crystalline, porous zeolite-containing solid, the zeolite being at least partially acidic and having intermediate pore size. Preferred alkylation catalysts include at least partially dealuminized acidic mordenites.

Claims44

Dependent claims

A cleaning product comprising:

(i) from about 0.1% to about 99% of a modified alkylarylsulfonate surfactant, wherein said modified alkylarylsulfonate surfactant is the product of a process comprising the following steps:
(a) a step of reacting, in the presence of a dimerization catalyst, an olefinic feedstock comprising alpha-olefins or mixtures thereof to form one or more vinylidene olefins having a carbon content of from C10 to C16;
(b) a step of alkylating an arene selected from benzene, toluene and mixtures thereof, with said vinylidene olefin, in the presence of an alkylation catalyst;
(c) a step of sulfonating the product of step (b);
and, optionally,
(d) a step of neutralizing the product of step (c);
and
(ii) from about 0.00001% to about 99% of cleaning product adjuncts.

5 more elements

Dependencies are inferred from the claim text.

Cleaning products comprising improved alkylarylsulfonate surfactants prepared via vinylidene olefins and processes for preparation thereof

Life of this patent

Cleaning products comprising improved alkylarylsulfonate surfactants prepared via vinylidene olefins and processes for preparation thereof

Life of this patent

Abstract

Claims44