Low volatile organic component medium
View Patent ↗A low VOC medium is described. The medium comprises a low VOC solvent such as propylene carbonate, dimethyl carbonate, or combinations thereof. The low VOC medium also comprises one or more glycol ethers. In addition, the low VOC medium also includes one or more surfactants and/or dispersants. The low VOC medium may also optionally comprise one or more binders. The low VOC medium can be used in preparing coating compositions and pastes that are intended for use in applications that include a firing step.
1. A coating composition comprising, prior to firing: glass frit;
and from about 10% to about 50% of a medium including dimethyl carbonate, and at least one glycol ether.
2. The coating composition of claim 1 , wherein the medium further comprises up to 10% by weight of a binder, and the coating composition has a viscosity of from about 8,000 to about 40,000 cPS at 10 RPM and 25° C.
3. The coating composition of claim 1 , wherein said coating composition is selected from the group consisting of a ceramic coating composition, a thin film, a thick film, a glaze and a glass enamel, and said coating composition exhibits a VOC content of less than 120 g/L as measured by ASTM Method 24.
4. A method of forming a coating composition, the method comprising:
providing glass frit;
providing a low VOC medium including an effective amount of dimethyl carbonate; and at least one glycol ether;
mixing the glass fit with the low VOC medium to thereby produce the coating composition,
wherein said coating composition is selected from the group consisting of a ceramic coating composition, a thick film, a thin film, a glaze and a glass enamel, and said composition exhibits a VOC content of less than 120 g/L as measured by ASTM Method 24.
5. A coating composition comprising a glass frit; and from about 10% to about 50% of a medium including dimethyl carbonate and at least one glycol ether, wherein said coating composition is selected from the group consisting of a glass enamel, an electronic thick film, an electronic thin film and a glaze.