IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0190345
(2011-07-25)
|
등록번호 |
US-8227072
(2012-07-24)
|
우선권정보 |
FR-10 56092 (2010-07-26) |
발명자
/ 주소 |
- Le Bris, Stephanie
- Dubanchet, Aurelien
- Joutang, Isabelle
- Perillon, Jean-Luc
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
1 |
초록
▼
This invention relates to an article (1) including a substrate (2) including two opposite faces (21, 22), and a sol-gel coating (3) covering at least one of the faces (21, 22) of said substrate (2), in which said sol-gel coating (3) is in the form of a continuous film of a material including a matri
This invention relates to an article (1) including a substrate (2) including two opposite faces (21, 22), and a sol-gel coating (3) covering at least one of the faces (21, 22) of said substrate (2), in which said sol-gel coating (3) is in the form of a continuous film of a material including a matrix formed by at least one metal polyalkoxylate and at least 5% by weight with respect to the total weight of the coating (3) of at least one metal oxide dispersed in said matrix. According to the invention, the sol-gel coating (3) is coated with a functional design (4) including at least one optically non-transparent chemical substance. This invention also relates to a process for producing an article.
대표청구항
▼
1. An article of manufacture comprising: a substrate having two opposite faces; anda sol-gel coating covering at least one of the two opposite faces of said substrate, wherein said sol-gel coating is in the form of a continuous film of a material including a matrix formed by at least one metal polya
1. An article of manufacture comprising: a substrate having two opposite faces; anda sol-gel coating covering at least one of the two opposite faces of said substrate, wherein said sol-gel coating is in the form of a continuous film of a material including a matrix formed by at least one metal polyalkoxylate and at least 5% by weight with respect to the total weight of the sol-gel coating of at least one metal oxide dispersed in said matrix, and wherein said sol-gel coating is coated with a functional design having at least one optically non-transparent chemical substance. 2. The article of manufacture according to claim 1, wherein the functional design is covered with a continuous transparent finishing layer comprising: a binder comprising a sol-gel material including a matrix formed by at least one metal polyalkoxylate and at least 5% by weight with respect to the total weight of the sol-gel material of at least one colloidal metal oxide dispersed in said matrix. 3. The article of manufacture according to claim 1, wherein the design comprises at least two partially superimposed layers of the at least one optically non-transparent chemical substance. 4. The article of manufacture according to claim 1, wherein the functional design comprises at least one non-continuous layer. 5. The article of manufacture according to claim 1, wherein the function design comprises at least two partially superimposed non-continuous layers. 6. The article of manufacture according to claim 1, wherein the functional design is free of a thermostable binder. 7. The article of manufacture according to claim 1, wherein the article is a cooking article, wherein one of the two opposite faces is an internal concave face located on the side of the article to be in contact with food and wherein the other of the two opposite faces is an external convex face located on the side of the article to be in contact with a heat source. 8. The article of manufacture according to claim 1, wherein the substrate is made of a material selected from the group consisting of metals, wood, glass, ceramics and plastic materials. 9. The article of manufacture according to claim 1, wherein the substrate is a metal substrate made of a material selected from the group consisting of anodized aluminum, non-anodized aluminum, polished aluminum, brushed aluminum, microbeaded aluminum, sanded aluminum, chemically treated aluminum, polished stainless steel, brushed stainless steel, microbeaded stainless steel, hammered copper and polished copper. 10. The article of manufacture according to claim 1, wherein the functional design comprises at least one binder that is thermostable at a temperature of at least 300° C., which is compatible with the sol-gel material of the sol-gel coating and the finishing layer (5). 11. The article of manufacture according to claim 10, wherein the binder comprises a silicone resin or a silicone-polyester resin. 12. The article of manufacture according to claim 1, wherein the optically non-transparent chemical substance is selected from the group consisting of thermostable pigments, thermochromic pigments, flakes and mixtures thereof. 13. The article of manufacture according to claim 12, wherein the optically non-transparent chemical substance, comprises a thermochromic pigment composition having at least one thermochromic pigment. 14. The article of manufacture according to claim 13, wherein the at least one thermochromic pigment is a semiconducting thermochromic pigment. 15. The article of manufacture according to claim 14, wherein the thermochromic pigment composition comprises composite pigment grains having a core-envelope structure, wherein the diameter of composite pigment grains is between 20 nm and 25000 nm, and each of the grains include a core including at least one semiconducting pigment that is thermochromic and lipid-sensitive under heat, anda transparent and continuous solid envelope of an inorganic material or a hybrid organomineral material. 16. The article of manufacture according to claim 15, wherein the thermochromic pigment composition further comprising at least one thermostable pigment, located inside or outside the composite pigment grains. 17. The article of manufacture according to claim 15, wherein the envelope of the composite pigment grains is a silica shell. 18. A process for producing an article of manufacture comprising the steps of: a) providing a formed metal substrate having two opposite faces;b) producing a sol-gel coating on at least one of the two opposite faces of said substrate, wherein the sol-gel coating is prepared by a process comprising the steps of: b1) preparing a sol-gel composition including at least one colloidal metal oxide and at least one metal alkoxide precursor; andb2) applying at least one layer of the sol-gel composition having a thickness of at least 5 μm on all or part of at least one of the two opposite faces of the substrate; andc) producing a functional design by applying a functional design composition having a viscosity of at least about 1.5 pascals/second and including at least one optically non-transparent chemical substance to the sol-gel coating to form the functional design; andd) baking the article to obtain a sol-gel coating having a thickness of at least 1 μm. 19. The process according to claim 18, further comprising, between steps (c) and (d); the step of applying a continuous transparent finishing layer to the functional design, wherein the finishing layer is at least one layer of a transparent sol-gel composition including at least one colloidal metal alkoxide and at least one metal oxide precursor; wherein the transparent sol-gel composition is applied to the functional design and any part of the sol-gel coating that is not covered by the functional design and wherein the at least one layer of the sol-gel composition has a thickness of at least 1 μm in a wet state. 20. The process according to claim 18, wherein the functional design is free of a thermostable binder and comprises an anionic polyelectrolyte as a thickener in an amount of between 2% and 20% by weight with respect to the total weight of the function design.
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