US4127515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waxing sponge
Assignee: Colgate Palmolive Co
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Filing: 1976-11-01
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Granted: 1978-11-28
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Expires: 1996-11-01
Abstract
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.
Inventors
- 👤 David M. MacRae
- 👤 Karl H. Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:38
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08J2375/00; C08J2375/04; C08J2491/00; Y; Y10; Y10S; Y10S521/00; Y10S521/905
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
93 words
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.
Claim 2
Dependent Claim
93 words
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.
Claim 3
Dependent Claim
14 words
A sponge as defined in claim 1 wherein said organic polyisocyanate is tolylene diisocyanate.
Claim 4
Dependent Claim
20 words
A sponge as defined in claim 2 wherein said diisocyanate is an 80:20 isomeric mixture of 2,4- and 2,6-tolylene diisocyanate.
Claim 5
Dependent Claim
15 words
A sponge as defined in claim 1 wherein said polyoxyalkylene polyol is a polyoxyethylene polyol.
Claim 6
Dependent Claim
16 words
A sponge as defined in claim 1 wherein said wax composition contains a mixture of waxes.
Claim 7
Dependent Claim
16 words
A sponge as defined in claim 5 wherein said mixture includes montan wax and carnauba wax.
Claim 8
Dependent Claim
15 words
A sponge as defined in claim 1 where said dispersion contains an organo polysiloxane liquid.
Claim 9
Dependent Claim
19 words
A sponge as defined in claim 1 wherein said dispersion contains a readily water-dispersible acidic carboxylic polymeric protective colloid.
Claim 10
Dependent Claim
37 words
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.
Claim 11
Dependent Claim
34 words
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.
Claim 12
Dependent Claim
46 words
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.
Claim 13
Dependent Claim
73 words
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.
Claim 14
Dependent Claim
24 words
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.
Claim 15
Dependent Claim
18 words
A sponge as defined in claim 1 wherein said nonionic surface active agent is a polyoxyethylenated polyoxypropylene glycol.
Claim 16
Dependent Claim
17 words
A sponge as defined in claim 1 wherein said nonionic surface active agent is polyoxyethylenated sorbitan monooleate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |