US 4,192,898 AGranted

Stable clear liquid release agent and method for preparation

AssigneePar-Way Mfg. Co.

InventorHarold W. Hanson, Sr.

Life of this patent

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Abstract

A method and composition for preparing a stable clear liquid release agent comprising at least two oils of an animal or vegetable fat and from about 0.25 to 2.0 percent by weight polysorbate 80 in which the oil present in a major portion is a liquid at room temperature and the oil present in a minor portion is a solid at room temperature. The method comprises forming a uniform mixture by agitating the oils at a temperature on the order of 74.degree. C. followed by rapidly and uniformly chilling the mixture with agitation to at least about 25.degree. C. and working the chilled mixture. Preferably the mixture is pre-cooled and homogenized prior to the rapid chilling step. Further, after the rapid chilling step the resultant blend is packed with CO.sub.2 propellant to yield an environmentally safe aerosol product. The resultant blend of oils presents a brighter and clearer appearance and is less susceptible to separation than conventionally blended oil mixtures.

Claims14

Dependent claims

A method for preparing a stable clear liquid release agent comprising a uniform liquid blend of fatty oils and Polysorbate 80, the method comprising the steps of heating and blending at a temperature of between about 65.degree. C. and about 260.degree. C. at least two fatty oils, said oils including a first oil selected from a group consisting of palm oil, coconut oil and palm kernel oil and mixtures thereof, said first oil being present in an amount of from about 15 to about 41 percent by weight of said blend, and a second oil selected from the group consisting of olive oil, cottonseed oil, peanut oil, sunflower seed oil, corn oil, herring oil, manhaden oil, pilchard oil, and fish liver oil and mixtures thereof, said second oil being present in an amount of from about 58 to about 84 percent by weight of said blend;

further blending Polysorbate 80 at a temperature of between about 74.degree. C. and 85.degree. C. with said blend of first and second oils said Polysorbate 80 being present in an amount of from about 0.25 to about 2.0 percent by weight of said blend;
chilling said blend of the first and second oils and said Polysorbate 80 to uniformly cool said blend to a temperature of between about 20.degree. C. and about 25.degree. C., working said chilled blend by high speed agitation to provide a clear liquid release agent and packaging said release agent with a CO.sub.2 propellant in an amount of from about 3.0 to about 5.0 percent by weight of said blend.

Dependencies are inferred from the claim text.

Facts

Application: 05/916,116Filed 16 Jun 1978 · continuation in part
Priority: 16 Dec 1974
Granted: 11 Mar 1980
Term ends: Not estimatedThe source records don’t support an estimate.

Classification2 codes

A21D 8/08
Methods for preparing or baking dough: prevention of sticking, e.g. to baking plates
A21D
Treatment of flour or dough for baking

Family

Serial532,850Parent of this continuation-in-part · filed 16 Dec 1974
Serial621,309Parent of this continuation · filed 10 Oct 1975
Serial772,929Parent of this continuation-in-part · filed 28 Feb 1977
US 4,096,258 AParent of this continuation-in-part
US 4,192,898 AThis patent

From the US filing history. Foreign family members aren’t listed.