Water stable antimicrobial silanol quaternary ammonium compounds
DCFirst Claim
1. A stabilized aqueous solution of silanol quaternary ammonium compound (SQAC) resistant to premature polymerization comprising:
- a mixture formed from an anhydrous SQAC defined as 3-(trimethoxysilyl) propyl-N-octadecyl-N,N-dimethyl ammonium chloride and an essential oil selected from the group consisting of cedarwood oil and pine tree oil, a ratio of a weight of the essential oil to the weight of the SQAC is between about 0.2 and about 0.5; and
a balance of demineralized water to a desired aqueous concentration, whereby the selected essential oil evaporates during a coating or curing of a substrate, allowing a generation of homopolymer crosslinking of a silanol group defined by the SQAC, thereby providing a highly water and solvent insoluble coating on the substrate.
1 Assignment
Litigations
0 Petitions
Accused Products
Abstract
A method of stabilizing aqueous solutions of antimicrobial silanol quaternary ammonium compounds (SQACs) from premature polymerization where the stabilizing agent is selected from a list of antimicrobial, naturally occurring, renewable, volatile, liquid phytochemical essential oils that easily form crystal clear microemulsions when water is added to the concentrated SQAC/essential oil mixture. These non-foaming oil-in-water microemulsions have excellent long term storage stability, remain very low in viscosity and do not phase or precipitate for many months. Many essential oils found to be useful in this process are non-toxic food additives having pleasant scents, have low flammability yet are volatile enough to evaporate upon cure down of the SQAC, resulting in a higher concentration of SQAC in the cured, antimicrobial film. Economically shippable concentrations of stabilized SQACs can be further diluted with water to application concentrations without losing any stabilizing properties and remain storage stable at these lower concentrations indefinitely.
-
Citations
15 Claims
-
1. A stabilized aqueous solution of silanol quaternary ammonium compound (SQAC) resistant to premature polymerization comprising:
-
a mixture formed from an anhydrous SQAC defined as 3-(trimethoxysilyl) propyl-N-octadecyl-N,N-dimethyl ammonium chloride and an essential oil selected from the group consisting of cedarwood oil and pine tree oil, a ratio of a weight of the essential oil to the weight of the SQAC is between about 0.2 and about 0.5; and a balance of demineralized water to a desired aqueous concentration, whereby the selected essential oil evaporates during a coating or curing of a substrate, allowing a generation of homopolymer crosslinking of a silanol group defined by the SQAC, thereby providing a highly water and solvent insoluble coating on the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification