Methods of preventing frost formation and facilitating the removal of winter precipitation relative to a windshield and compositions for use therein
View Patent ↗Disclosed herein is a winter precipitation barrier composition, comprising: a retaining agent, a solvent, and optionally, an auxiliary component, such as a rheology/viscosity modifier, surfactant, detergent, foaming/defoaming additive, humectant, dye, colorant, fragrance, or a combinations thereof. In one embodiment, the retaining agent comprises a primarily hydrophobic monomer or a hydrophilic monomer.
1. A winter precipitation barrier composition consisting of
a retaining agent comprising a unit derived from a glycerol monomer,
a solvent consisting of a mixture of a monoalcohol and a glycol, and
at least one of a silicone oil, fluorinated polyether diol, rheology/viscosity modifier, surfactant, detergent, foaming/defoaming additive, humectant, dye, colorant, fragrance, and combinations thereof.
2. The winter precipitation barrier composition of claim 1 , wherein the retaining agent comprises a primarily hydrophobic monomer or a hydrophilic monomer.
3. The winter precipitation barrier composition of claim 1 , wherein the retaining agent comprises both a hydrophobic monomer and a hydrophilic monomer.
4. The winter precipitation barrier composition of claim 1 , wherein the retaining agent comprises an ethylene oxide monomer.
5. The winter precipitation barrier composition of claim 1 , wherein the retaining agent comprises a propylene oxide monomer.
6. The winter precipitation barrier composition of claim 1 , wherein the retaining agent comprises a copolymer comprising ethylene oxide, propylene oxide, and glycerol.
7. The winter precipitation barrier composition of claim 1 , wherein the retaining agent comprises a polymer or copolymer having a molecular weight of from about 100 unified atomic mass units to about 10,000 unified atomic mass units.
8. The winter precipitation barrier composition of claim 7 , wherein the retaining agent comprises a polymer or copolymer having a the molecular weight of from about 2,000 unified atomic mass units to about 3,000 unified atomic mass units.
9. The winter precipitation barrier composition of claim 8 , wherein the retaining agent comprises a polymer or copolymer having a molecular weight of about 2600 unified atomic mass units.
10. The winter precipitation barrier composition of claim 1 , wherein the composition has a freezing point of less than 0 degrees Celsius.
11. The winter precipitation barrier composition of claim 10 , wherein the composition has a freezing point of less than −30 degrees Celsius.
12. The winter precipitation barrier composition of claim 1 , wherein the composition has a viscosity of greater than 0.1 cSt.
13. The winter precipitation barrier composition of claim 12 , wherein the composition has a boiling point of greater than 20 degree Celsius.
14. The winter precipitation barrier composition of claim 1 , wherein the solvent is present in an amount of about 1 weight % to about 99.9 weight %.
15. The winter precipitation barrier composition of claim 1 , wherein the retaining agent is present in an amount of about 0.1 weight % to about 99 weight %.
16. The winter precipitation barrier composition of claim 1 , wherein the monoalcohol is methanol and the methanol is present in an amount of about 65% weight, the glycol is propylene glycol and the propylene glycol is present in an amount of about 30% weight, and the retaining agent is present in an amount of about 5 weight %.
17. A winter precipitation barrier composition consisting of:
a retaining agent comprising a unit derived from a glycerol monomer,
a solvent comprising a mixture of a monoalcohol and a glycol.