US3891571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam producing composition containing whey solids
Assignee: United States Department of Agriculture
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Filing: 1973-10-26
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Granted: 1975-06-24
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Expires: 1993-10-26
Abstract
Abstract Highly economical agricultural foams were prepared from selected formulations containing whey solids, a surfactant and a viscosity builder. Greater versatility and durability are imparted to these foams by incorporating specified concentrations of animal hide glues. The foams are light in weight, of high expansion and form ''''skins'''' which make them specifically useful in providing protection to biological plants from frost and freezing temperatures; can be used as carriers for defoliants, herbicides, fungicides, sterilants and other chemicals; and, may be used as farm markers and foam covers after soil injection-fumigation.
Inventors
- 👤 Madeline G Lambou
- 👤 James J Spadaro
- 👤 Eunice M Rusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:54
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/16; C; C09; C09K; C09K17/00; C09K17/52; A01G; A01G13/00; A01G2013/004; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06; Y10S71/00; Y10S71/90; Y10S71/904
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
150 words
A FOAM PRECURSOR COMPOSITION THAT CAN BE GENERATED TO A FOAM CAPABLE OF RETAINING ITS CONFIGURATION AT OR BELOW 36**F FOR A PERIOD OF TIME UP TO ABOUT 8 DAYS, SAID FOAM PRECURSOR COMPOSITION CONSISTING OF A HOMOGENOUS SUSPENSION OF WATER CONTAINING ABOUT FROM 1 TO 2 PERCENT OF WHEY SOLIDS, THE PROTEIN CONTENT OF WHICH IS ABOUT FROM 7.5 TO 51 PERCENT; ABOUT FROM 0.5 TO 1 PERCENT OF ANIMAL HIDE GLUE, A COLLAGENOUS COMPONENT; ABOUT FROM 0.3 TO 2 PERCENT OF A SURFACTANT SELECTED FROM THE GROUP CONSISTING OF: AN ANIONIC AMMONIUM LAURYL TRIOXYETHYLENE SULFATE, AND AN AMMONIUM SUBSTITUTED C12 TO C18 ALKYL SULFATE; AND ABOUT FROM 0.1 TO 0.3 PERCENT OF A VISCOSITY BUILDER SELECTED FROM THE GROUP OF WATER DISPERSIBLE POLYMERS CONSISTING OF: HYDROXYETHYL CELLULOSE, HYDROXYPROPYL CELLULOSE, XANTHAN GUM, BOTH FOOD GRADE AND INDUSTRIAL GRADE, AND MIXTURES OF INDUSTRIAL GRADE XANTHAN GUM AND LOCUST BEAN GUM.
Claim 2
Dependent Claim
150 words
A FOAM PRECURSOR COMPOSITION THAT CAN BE GENERATED TO A FOAM CAPABLE OF RETAINING ITS CONFIGURATION AT OR BELOW 36**F FOR A PERIOD OF TIME UP TO ABOUT 8 DAYS, SAID FOAM PRECURSOR COMPOSITION CONSISTING OF A HOMOGENOUS SUSPENSION OF WATER CONTAINING ABOUT FROM 1 TO 2 PERCENT OF WHEY SOLIDS, THE PROTEIN CONTENT OF WHICH IS ABOUT FROM 7.5 TO 51 PERCENT; ABOUT FROM 0.5 TO 1 PERCENT OF ANIMAL HIDE GLUE, A COLLAGENOUS COMPONENT; ABOUT FROM 0.3 TO 2 PERCENT OF A SURFACTANT SELECTED FROM THE GROUP CONSISTING OF: AN ANIONIC AMMONIUM LAURYL TRIOXYETHYLENE SULFATE, AND AN AMMONIUM SUBSTITUTED C12 TO C18 ALKYL SULFATE; AND ABOUT FROM 0.1 TO 0.3 PERCENT OF A VISCOSITY BUILDER SELECTED FROM THE GROUP OF WATER DISPERSIBLE POLYMERS CONSISTING OF: HYDROXYETHYL CELLULOSE, HYDROXYPROPYL CELLULOSE, XANTHAN GUM, BOTH FOOD GRADE AND INDUSTRIAL GRADE, AND MIXTURES OF INDUSTRIAL GRADE XANTHAN GUM AND LOCUST BEAN GUM.
Claim 3
Dependent Claim
17 words
The foam precursor composition of claim 1 wherein the surfactant is an anionic ammonium lauryl trioxyethylene sulfate.
Claim 4
Dependent Claim
19 words
The foam precursor composition of claim 1 wherein the surfactant is an ammonium substituted C12 to C18 alkyl sulfate.
Claim 5
Dependent Claim
14 words
The foam precursor composition of claim 1 wherein the viscosity builder is hydroxyethyl cellulose.
Claim 6
Dependent Claim
14 words
The foam precursor composition of claim 1 wherein the viscosity builder is hydroxypropyl cellulose.
Claim 7
Dependent Claim
20 words
The foam precursor composition of claim 1 wherein the viscosity builder is either food grade or industrial grade xanthan gum.
Claim 8
Dependent Claim
27 words
The foam precursor composition of claim 1 wherein the viscosity builder is one of a variety of mixtures of industrial grade xanthan gum and locust bean gum.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |