Rinse aid for plasticware
AssigneeEcolab Inc.
InventorsSteven E. Lentsch, Victor F. Man, Matthew J. Sopha
Life of this patent
Estimating the term…
Abstract
A rinse aid composition for use on plasticware is herein described which requires lower concentration of conventional hydrocarbon surfactants, exhibits adequate sheeting on the plasticware and acceptable drying time which prior rinse aids have failed to provide without special handling. The compositions described contain hydrocarbon surfactants and a polyether or polybetaine polysiloxane copolymer surfactant in combination with a fluorinated hydrocarbon surfactant. The composition may be formulated as a solid or liquid suitable for dilution to form an aqueous rinse used to contact the plasticware in a warewashing machine.
Claims15
A rinse aid composition comprising:
- (a) about 0.1 to about 10 wt-% of a fluorinated hydrocarbon nonionic surfactant;
- (b) about 0.1 to about 10 wt-% of a polyalkylene oxide-modified polydimethylsiloxane or a polybetaine-modified polysiloxane of the formula ##STR10## wherein R is --(CH.sub.2).sub.3 --O--(EO)--(PO)--Z or ##STR11## n is 0 or .gtoreq.1;
- m is at least 1, Z is hydrogen or alkyl of 1-6 carbon atoms and the weight ratio in % of EO:PO may vary from 100:0 to 0:100;
- and
- (c) about 2-90 wt-% of a nonionic block copolymer of ethylene oxide and propylene oxide or a mixture thereof, wherein said composition on dilution forms an aqueous rinse for providing sheeting on plasticware.
A rinse aid composition comprising:
- (a) about 5 to 50 wt-% of a sorbitan fatty acid ester containing greater than about 1 5 moles of alkylene oxide per mole of sorbitan;
- (b) about 0.2 to 25 wt-% of a defoamer composition selected from the group consisting of an alkali metal or alkaline earth metal salt of a fatty acid, a silicone, a fatty acid ester of glycerol, and mixtures thereof;
- (c) about 0.1 to 10 wt-% of an ethoxylated fluoroaliphatic sulfonamide alcohol;
- and
- (d) about 0.1 to 10 wt-% of a polyalkylene oxide-modified polydimethylsiloxane or a polybetaine-modified polysiloxane of the formula ##STR13## wherein R is --(CH.sub.2).sub.3 --O--(EO)--(PO)--Z or ##STR14## n is 0 or .gtoreq.1, m is at least 1, Z is hydrogen or alkyl of 1-6 carbon atoms and the weight ratio in % of EO to PO is 100:0 to 0:100, wherein said composition on dilution forms an aqueous rinse for providing sheeting on plasticware.
A solid block rinse aid composition comprising:
- (a) about 0.1 to about 10 w-% of a fluorinated hydrocarbon nonionic surfactant;
- (b) about 0.1 to about 10 wt-% of a polyalkylene oxide-modified polydimethylsiloxane or a polybetaine-modified polysiloxane of the formula ##STR16## wherein R is --(CH.sub.2).sub.3 --O--(EO)--(PO)--Z or ##STR17## n is 0 or .gtoreq.1;
- m is at least 1, Z is hydrogen or alkyl of 1-6 carbon atoms and the weight ratio in % of EO:PO may vary from 100:0 to 0:100;
- (c) about 2-90 wt-% of a nonionic block copolymer of ethylene oxide and propylene oxide or a mixture thereof;
- and
- (d) a solidifier, wherein said composition on dilution forms an aqueous rinse for providing sheeting on plasticware.
Dependencies are inferred from the claim text.