Antifreeze composition and method
AssigneeCamco Manufacturing, Inc.
InventorRobert C. Flowers
Life of this patent
Estimating the term…
Abstract
An antifreeze composition and method of use provides safety and protection for potable water systems in RVs, vacation homes, swimming pools and raw water cooled marine engines against freeze damage. The antifreeze composition includes propylene glycol, a sorbitol surfactant having a high Hydrophilic Lipophilic Balance (HLB) number and water. The preferred sorbitol surfactant consists of food grade polyoxyethylene (20) sorbitan monooleate. By directing the antifreeze composition into these water systems, freeze damage is prevented even when the temperature drops to extremely low levels.
Claims12
The method of preventing freeze damage to a water system comprising the steps of:
- a) mixing a sorbitol surfactant, said sorbitol surfactant having an HLB number between 11-17, with propylene glycol to form an antifreeze composition, said propylene glycol comprising 10-70% by weight of said antifreeze composition, and
- b) directing the antifreeze composition into the water system.
The method of preventing freeze damage to a potable water system comprising the steps of:
- a) preparing an antifreeze composition containing propylene glycol, water and a sorbitol surfactant, said sorbitol surfactant having an HLB number between 11-17, and
- b) adding the antifreeze composition to the potable water system.
Dependencies are inferred from the claim text.