Multiple-substituted bleach activators

Details Multiple-substituted bleach activators Multiple-substituted bleach activators

C - Chemistry, Metallurgy

07

D

C07D 223/10 (2006.01) C07D 211/76 (2006.01) C07D 233/06 (2006.01) C07D 401/12 (2006.01) C07D 403/12 (2006.01) C11D 3/39 (2006.01)

Patent

CA 2197445

Bleaching compositions, laundry and automatic dishwashing detergent compositions comprising multiple-substituted bleach activators which have at least one quaternary nitrogen atom, are provided. More specifically, the invention relates to compositions which provided enhanced cleaning/bleaching benefits through the selection of multiple-substituted quaternary bleach activators having specific leaving groups with a conjugate acid aqueous pK a above (13) and with the advantageous ratios of rate of perhydrolysis to rate of hydrolysis and of rate of perhydrolysis to rate od diacylperoxide production. Included are preferred activator compounds and methods for washing fabrics, hard surfaces, and tableware using the activators. A preferred multiple-substituted bleach activator has the formula: Q(C(X)L)t wherein said multiple-substituted bleach activator is associated with charge- balancing compatible anions; Q is a moiety which comprises q tetravalent nitrogen atoms, wherein q is from about 1 to about 4, each of said tetravalent nitrogen atoms is separated from its nearest proximate --C(X)L group by a linkage of at least two carbon atoms, and provided that the atom in Q to which any --C(X)L is bonded is a carbon atom; X is O; t is 2 or 3; and L is selected from the group consisting of cyclic amidines with a ring size of from about 5 to about 12 atoms; lactams with a ring size of from about 6 to about 12 atoms; anilino derivatives; and mixtures thereof, and further provided that said multiple-substituted bleach activator has a ratio of: (i) k P/k H ~ 1 wherein k P is the rate constant for perhydrolysis of said bleach activator and k H is the rate constant for hydrolysis of said bleach activator; and has a ratio of (ii) k P/k D ~ 5 wherein k P is as defined in (i) and wherein k D is the rate constant for formation of a diacylperoxide from said bleach activator; and further provided that k H~10M-1s-1.

La présente invention concerne des compositions de blanchiment, des compositions détergentes de blanchisserie et de lave-vaisselle comprenant des activateurs de blanchiment à substitutions multiples présentant au moins un atome d'azote quaternaire. En l'occurrence, l'invention concerne des compositions produisant un effet accru de nettoyage/blanchiment grâce au choix d'activateurs de blanchiment quaternaires à substitutions multiples présentant des groupes partants spécifiques dont le pKa acide conjugué est supérieur à 13, ainsi que des rapports avantageux entre le taux de perhydrolyse et le taux d'hydrolyse ainsi qu'entre le taux de perhydrolyse et le taux de production de diacylperoxyde. L'invention concerne également des composés d'activateurs préférés et des procédés de lavage de tissus, de surfaces dures et de vaisselle de table à l'aide de ces activateurs.

Affiliated with

Also associated with

Rating

Multiple-substituted bleach activators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple-substituted bleach activators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple-substituted bleach activators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2067973