Waxing sponge

• US 4,127,515 A
• Filed: 11/01/1976
• Issued: 11/28/1978
• Est. Priority Date: 10/21/1974
• Status: Expired due to Term

• Current Assignee: Colgate-Palmolive Company
• Original Assignee: Colgate-Palmolive Company
• Inventors: Roberts, Karl H., MacRae, David M.
• Primary Examiner(s): Ivy, C. Warren
• Application Number:
  US05/737,872
• Time in Patent Office: 757 Days
• Field of Search: 260/2.5 A, 260/2.5 D, 260/2.5 AG, 260/2.5 AL, 106/8, 106/9, 106/10
• US Class Current: 521/112
• CPC Class Codes: C08G 18/4833 Polyethers containing oxyethylene units
• CPC Class Codes: C08J 2375/04 Polyurethanes
• CPC Class Codes: C08J 2491/00 Characterised by the use of oils, fats or waxes; Derivatives thereof
• CPC Class Codes: C08J 9/0061 characterized by the use of several polymeric components
• CPC Class Codes: C08L 71/02 Polyalkylene oxides
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: C08L 91/06 Waxes
• CPC Class Codes: Y10S 521/905 Hydrophilic or hydrophobic cellular product

Abstract

A hydrophilic flexible open-celled poly (urea/urethane) sponge derived from prepolymer produced by reaction of a polyoxyalkylene polyol with a stoichiometric excess of an organic polyisocyanate, said sponge containing uniformly distributed therethrough a readily releasable wax composition, and methods of making and using same for waxing surfaces.

Claims

1. A hydrophilic flexible open-celled poly (urea/urethane) sponge containing uniformly distributed therethrough a readily releasable wax composition, said sponge being produced by mixing and reacting (a) an isocyanate capped prepolymer obtained by reaction of a polyoxyethylene polyol with a stoichiometric excess of an organic polyisocyanate with (b) an aqueous dispersion containing by weight of the prepolymer about 30 to 200% of water as substantially the sole diluent and, by weight of the dispersion, about 0.1 to 8% of a wax and about 2 to 12% of a nonionic polyoxyethylenated polyhydric alcohol surface active agent.

2. A sponge as defined in claim 1 wherein said organic polyisocyanate is tolylene diisocyanate.

3. A sponge as defined in claim 2 wherein said diisocyanate is an 80:

20 isomeric mixture of 2,4- and 2,6-tolylene diisocyanate.

4. A sponge as defined in claim 1 wherein said polyoxyalkylene polyol is a polyoxyethylene polyol.

5. A sponge as defined in claim 1 wherein said wax composition contains a mixture of waxes.

6. A sponge as defined in claim 5 wherein said mixture includes montan wax and carnauba wax.

7. A sponge as defined in claim 1 where said dispersion contains an organo polysiloxane liquid.

8. A sponge as defined in claim 1 wherein said dispersion contains a readily water-dispersible acidic carboxylic polymeric protective colloid.

9. A sponge as defined in claim 1 wherein said dispersion contains a mixture of waxes, a plurality of different polyoxyethylene-containing nonionic surface active agents, an organo polysiloxane liquid, and a readily water-dispersible acidic carboxylic polymeric protective colloid.

10. A sponge as defined in claim 7 wherein said polysiloxane liquid has a viscosity at 25°

C. of about 20 to 15,000 centistokes and constitutes about 0.5 to 9% by weight of said dispersion.

11. A sponge as defined in claim 10 wherein said polysiloxane liquid comprises a mixture of an organo polysiloxane having a viscosity at 25°

C. of about 50 to 550 centistokes with an organo polysiloxane having a viscosity at 25°

C. of about 950 to 15,000 centistokes.

12. A sponge as defined in claim 1 wherein said dispersion contains approximately by weight 0.1 to 8% of a mixture of montan and carnauba waxes, 2 to 12% of the nonionic surface active agent, and 0.5 to 9% of a mixture of an organo polysiloxane having a viscosity at 25°

C. of about 50 to 550 centistokes with an organo polysiloxane having a viscosity at 25°

C. of about 950 to 15,000 centistokes.

13. A sponge as defined in claim 12 wherein said dispersion further contains about 0.02 to 1% of a readily water-dispersible acidic polymeric protective colloid.

14. A sponge as defined in claim 1 wherein said nonionic surface active agent is a polyoxyethylenated polyoxypropylene glycol.

15. A sponge as defined in claim 1 wherein said nonionic surface active agent is polyoxyethylenated sorbitan monooleate.