Heating article including coloured heat indicator with improved visability and precision
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05D-005/00
A47J-027/00
A47J-036/00
B32B-003/00
B32B-007/00
C09D-011/00
출원번호
US-0190381
(2011-07-25)
등록번호
US-8647735
(2014-02-11)
우선권정보
FR-10 56091 (2010-07-26)
발명자
/ 주소
Le Bris, Stephanie
Voisin, Laurent
Perillon, Jean-Luc
출원인 / 주소
SEB S.A.
인용정보
피인용 횟수 :
1인용 특허 :
4
초록▼
This invention relates to a heating article (1) comprising a substrate (2) of which one of the surfaces (21) is equipped with a design (4), in the form of a coating layer with at least one pattern (41, 42), which comprises a thermochromic pigment composition with at least one SC thermochromic pigmen
This invention relates to a heating article (1) comprising a substrate (2) of which one of the surfaces (21) is equipped with a design (4), in the form of a coating layer with at least one pattern (41, 42), which comprises a thermochromic pigment composition with at least one SC thermochromic pigment that is lipid-sensitive under heat. According to the invention, the thermochromic pigment composition includes at least one thermostable pigment and composite pigment grains (43), which each include a core (430) including the semiconducting thermochromic pigment, and a solid, transparent and continuous envelope (431), formed by a mineral or organomineral material. The thermochromic pigment composition shows a reversible change in color in a thermal color-change area with an amplitude of no more than 40° C. within the range of variation of said temperature T1 of use.
대표청구항▼
1. A heating article comprising a substrate heatable to a temperature range of between 50° C. and 400° C. (T1) and having a surface; anda design applied to at least a portion of said surface, wherein the design is in the form of a coating layer having at least one pattern, wherein the at least one p
1. A heating article comprising a substrate heatable to a temperature range of between 50° C. and 400° C. (T1) and having a surface; anda design applied to at least a portion of said surface, wherein the design is in the form of a coating layer having at least one pattern, wherein the at least one pattern comprises a thermochromic pigment composition including at least one thermochromic semiconducting pigment that is lipid-sensitive under heat, wherein said thermochromic pigment composition includes: composite pigment grains having a core-envelope structure with a diameter of between 20 nm and 25,000 nm and each of which include: a core including said thermochromic semiconducting pigment; anda solid, transparent and continuous envelope formed from a mineral or organomineral hybrid material, and at least one thermostable pigment, wherein thermochromic pigment composition of the heating article shows a reversible change in color in a thermal color-change area with an amplitude of no more than 40° C. within the range of variation of said temperature T1. 2. The heating article according to claim 1, wherein said thermochromic semiconducting pigment is in a divided state in the form of solid particles and wherein each composite pigment includes at least one pigment particle. 3. The heating article according to claim 1, wherein the envelope of the composite pigment grains has a thickness of between 5 nm and 100 nm. 4. The heating article according to claim 3, wherein the envelope of the composite pigment grains has a thickness of between 20 and 50 nm. 5. The heating article of claim 4, wherein the envelop of the composite pigment grains has a thickness of about 30 nm. 6. The heating article according to claim 1, wherein that the envelope of the composite pigment gains is a mineral envelope comprising one or more metal oxides chosen from the oxides of the elements selected from the group consisting of Al, Si, Fe, Zr, Ce, Ti, B, Mg, Sn, Mn, Hf, Th, Nb, Ta, Zn, Mo, Ba, Sr, Ni, Sb, and combinations thereof. 7. The heating article according to claim 1, wherein the envelope of the composite pigment grains is a mineral envelope selected from the group consisting of Zn, Al, Mg, Ca, Bi, Fe, Cr phosphates, Cr pyrophosphates, and combinations thereof. 8. The heating article according to claim 1, wherein the core of the composite pigment grains further comprises at least one thermostable pigment in liquid form or in a divided state in the form of solid particles. 9. The heating article according to claim 1, wherein the design comprises at least one binder that is thermostable at least at 300° C. 10. The heating article according to claim 9 wherein the design comprises further comprises a binder including: a sol-gel material comprising a matrix of at least one metal polyalkoxylate and at least 5% by weight with respect to the total weight of the coating layer of at least one colloidal metal oxide dispersed in said matrix. 11. The heating article according to claim 10, wherein the thermostable binder of the design is selected from the group of a fluorocarbon resin, a mixture of fluorocarbon resins, and a mixture of fluorocarbon resins and thermostable resins. 12. The heating article according to claim 10, wherein the thermostable binder is a silicone resin or a silicone polyester resin. 13. The heating article according to claim 1, wherein the surface is at least partially covered by a continuous or non-continuous base coating, onto which the design is applied, wherein the base coating includes at least one thermostable binder resistant at least at 200° C. 14. The heating article according to claim 1, wherein at least one of the design and the surface intended and the base coating is covered with a transparent continuous finishing layer comprising at least one thermostable binder resistant at least at 200° C. 15. The heating article according to claim 14, wherein the thermostable binder of the base coating and of the finishing layer are identical and comprise a sol-gel material having a matrix comprising at least one metal polyalkoxylate and at least 5% by weight with respect to the total weight of the coating layer of at least one colloidal metal oxide dispersed in said matrix. 16. The heating article according to claim 1, wherein the design does not contain a thermostable binder. 17. The heating article according to claim 9, wherein the envelope of the composite pigment grains is a silica shell. 18. The heating article according to claim 1, wherein the thermochromic semiconducting pigment that is lipid-sensitive under heat contained in the core of the composite pigment grains is a metal oxide. 19. The heating article according to claim 18, characterized in that the thermochromic semiconducting pigment that is lipid-sensitive under heat is selected from the group consisting of Bi2O3, Al2O3, V2O5, WO3, CeO2, In2O3, pyrochloric semiconducting Y1.84Ca0.16Ti1.84V0.16O1.84, and BiVO4. 20. The heating article according to claim 1, wherein the mixture of a thermostable pigment and a thermochromic semiconducting pigment that is lipid-sensitive under heat is chosen from the mixtures (Bi2O3+Co3(PO4)2, (Bi2O3+LiCoPO4), (Bi2O3+CoAl2O4), (Y1.84Ca0.16Ti1.84V0.16O1.84+CO3(PO4)2) and (V2O5+Cr2O3). 21. The heating article according to claim 1, comprising at least two patterns, each comprising a pigment composition, in which at least one of said pigment compositions of the two patterns is thermochromic. 22. The heating article according to claim 21, wherein the patterns have: at room temperature, an initial colorimetric difference that is perceptible at room temperature, andat a temperature of use (T1) between 50° C. and 400° C., a final substantially identical colour. 23. The heating article according to claim 21, wherein the patterns have, at room temperature, an identical colour, and at a temperature of use (T1) between 50° C. and 400° C., a final colorimetric difference that is perceptible to the human eye. 24. The heating article according to claim 21, wherein one of the patterns comprises a pigment composition showing a reversible change in colour at about the temperature of use (T1) while the other pattern comprises a pigment composition showing a reversible change in colour around a temperature (T2) greater than the temperature of use (T1) of at least 40° C.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (4)
Higgins James Francis (Livingston NJ), Heat stable monoclinic bismuth vanadate pigment.
Buffard, Jean Pierre; Voisin, Laurent; Gardaz, Claudine, Heating article comprising a surface coated with a decorative element capable of color change.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.