Self-curable silicone resins for non-stick surfaces

A curable composition comprising:

• a polysiloxane resin formed from siloxane monomer units;
• wherein the polysiloxane resin comprises less than 80 mol % of T siloxane monomer units, based on the total moles of siloxane monomer units in the polysiloxane resin;
• wherein the polysiloxane resin comprises less than 1 mol % of M and Q siloxane monomer units, based on the total moles of siloxane monomer units in the polysiloxane resin;
• a solvent;
• and
• a surfactant;
• wherein the surfactant comprises at least one of:
• a surfactant of Formula IIA
• wherein x is an ethylene glycol monomer, y is a propylene glycol monomer and z is an ethylene glycol monomer;
• a surfactant of Formula IIB
• wherein x is a propylene glycol monomer, y is an ethylene glycol monomer, and z is propylene glycol monomer;
• a surfactant of Formula III
• wherein n=16-20;
• and
• a combination of surfactants of Formula IIA, IIB, and III;
• and
• wherein a weight ratio of the surfactant to the polysiloxane resin is from 0.01 to 0.09 based on the total weight of the composition;
• and
• wherein the composition includes less than 1 wt. % of any fluorine-containing component, based on a total weight of the composition.

A method of coating a substrate, comprising:

• applying, to a substrate, a coating composition comprising:
• a polysiloxane resin formed from siloxane monomer units and having the following formula:
• RnSiO((4-n)/2), wherein R is alkyl or aryl;
• wherein the polysiloxane resin comprises less than 80 mol % of T siloxane monomer units, based on the total moles of siloxane monomer units in the polysiloxane resin;
• wherein the polysiloxane resin comprises less than 1 mol % of M and Q siloxane monomer units, based on the total moles of siloxane monomer units in the polysiloxane resin;
• a solvent;
• and
• a surfactant;
• wherein the surfactant comprises at least one of:
• a surfactant of Formula IIA
• wherein x is an ethylene glycol monomer, y is a propylene glycol monomer and z is an ethylene glycol monomer;
• a surfactant of Formula IIB
• wherein x is a propylene glycol monomer, y is an ethylene glycol monomer, and z is propylene glycol monomer;
• a surfactant of Formula III
• wherein n=16-20;
• and
• a combination of surfactants of Formula IIA, IIB, and III;
• and
• wherein a weight ratio of the surfactant to the polysiloxane resin is from 0.01 to 0.09, based on the total weight of the coating composition;
• and
• curing the coating composition.

A polysiloxane resin formed from siloxane monomer units:

• wherein:
• x is any integer from 1 to 50;
• y is any integer from 1 to 20;
• z is any integer from 1 to 50;
• R1 is a C1-C30 linear or C3-C30 cyclic alkyl group;
• R2 and R3 are each independently a C1-C30 linear or C3-C30 cyclic alkyl group, or a C6 or C7 aryl group;
• and
• R4 is a C6 or C7 aryl group;
• wherein the polysiloxane resin comprises less than 80 mol % of T siloxane monomer units, based on the total moles of siloxane monomer units in the polysiloxane resin;
• wherein the polysiloxane resin comprises less than 1 mol % of M and Q siloxane monomer units, based on the total moles of siloxane monomer units in the polysiloxane resin.