公开(公告)号：US20210108090A1

公开(公告)日：2021-04-15

申请号：US17123604

申请日：2020-12-16

申请人： ECKART GmbH

发明人： Burkhard Schreiber

IPC分类号： C09D5/03 ,  C09C1/00 ,  C09D5/36 ,  C09D167/02

摘要： The invention relates to coated effect pigments, wherein the coating comprises a binder which is suitable for powder paints. They comprise a crystalline and an amorphous fraction which is determined by C13 NMR MAS relaxation measurements, the relaxation of the 13C cores being fitted as a biexponential relaxation according to the formula (II) and the degree of crystallinity c being in a range between 40 to 85%, and relaxation having a short average relaxation time T1S and a long average relaxation time T1l, and T1l being in a range of from 65 to 130 s. The effect pigments coated according to the invention have at least one endothermic peak with a maximum from a range of Tmax=100 to 150° C. and an enthalpy ΔH associated with said peak from a range of 15 J/g to 80 J/g in DSC at a feed speed of 5° C./min, the enthalpy being calculated relative to the amount of the binder. The binders are applied to the effect pigment by way of spontaneous precipitation.

公开(公告)号：US20200181423A1

公开(公告)日：2020-06-11

申请号：US16089263

申请日：2017-03-30

申请人： ECKART GmbH

发明人： Burkhard Schreiber

IPC分类号： C09D5/03 ,  C09C1/00 ,  C09D5/36 ,  C09D167/02

摘要： The invention relates to coated effect pigments, wherein the coating comprises a binder which is suitable for powder paints. They comprise a crystalline and an amorphous fraction which is determined by C13 NMR MAS relaxation measurements, the relaxation of the 13C cores being fitted as a biexponential relaxation according to the formula (II) and the degree of crystallinity c being in a range between 40 to 85%, and relaxation having a short average relaxation time T1S and a long average relaxation time T1I, and T1I being in a range of from 65 to 130 s. The effect pigments coated according to the invention have at least one endothermic peak with a maximum from a range of Tmax=100 to 150° C. and an enthalpy ΔH associated with said peak from a range of 15 J/g to 80 J/g in DSC at a feed speed of 5° C./min, the enthalpy being calculated relative to the amount of the binder. The binders are applied to the effect pigment by way of spontaneous precipitation. M  ( t , M 0 , a , c , T 1 s , T 1 l ) = M 0 · [ ( 1 - c ) · ( 1 - a · e - ( t T 1 s ) ) + c · ( 1 - a · e - ( t T 1 l ) ) ] ( II )

公开(公告)号：US10899934B2

公开(公告)日：2021-01-26

申请号：US16089263

申请日：2017-03-30

申请人： ECKART GmbH

发明人： Burkhard Schreiber

IPC分类号： C09D5/32 ,  C08K9/02 ,  C09D167/02 ,  C09D5/03 ,  C09C1/00 ,  C09D5/36

摘要： The invention relates to coated effect pigments, wherein the coating comprises a binder which is suitable for powder paints. They comprise a crystalline and an amorphous fraction which is determined by C13 NMR MAS relaxation measurements, the relaxation of the 13C cores being fitted as a biexponential relaxation according to the formula (II) and the degree of crystallinity c being in a range between 40 to 85%, and relaxation having a short average relaxation time T1S and a long average relaxation time T1I, and T1I being in a range of from 65 to 130 s. The effect pigments coated according to the invention have at least one endothermic peak with a maximum from a range of Tmax=100 to 150° C. and an enthalpy ΔH associated with said peak from a range of 15 J/g to 80 J/g in DSC at a feed speed of 5° C./min, the enthalpy being calculated relative to the amount of the binder. The binders are applied to the effect pigment by way of spontaneous precipitation. M ⁡ ( t , M 0 , a , c , T 1 s , T 1 l ) = M 0 · [ ( 1 - c ) · ( 1 - a · e - ( t T 1 s ) ) + c · ( 1 - a · e - ( t T 1 l ) ) ] ( II )

公开(公告)号：US11702552B2

公开(公告)日：2023-07-18

申请号：US17123604

申请日：2020-12-16

申请人： ECKART GmbH

发明人： Burkhard Schreiber

IPC分类号： C09D5/36 ,  C09D5/03 ,  C09C1/00 ,  C09D167/02

CPC分类号： C09D5/032 ,  C09C1/0021 ,  C09D5/36 ,  C09D167/02 ,  C09C2200/1054 ,  C09C2200/406 ,  C09C2220/103 ,  C09D167/00 ,  C08K9/02

摘要： The invention relates to coated effect pigments, wherein the coating comprises a binder which is suitable for powder paints. They comprise a crystalline and an amorphous fraction which is determined by C13 NMR MAS relaxation measurements, the relaxation of the 13C cores being fitted as a biexponential relaxation according to the formula (II) and the degree of crystallinity c being in a range between 40 to 85%, and relaxation having a short average relaxation time T1S and a long average relaxation time T1l, and T1l being in a range of from 65 to 130 s. The effect pigments coated according to the invention have at least one endothermic peak with a maximum from a range of Tmax=100 to 150° C. and an enthalpy ΔH associated with said peak from a range of 15 J/g to 80 J/g in DSC at a feed speed of 5° C./min, the enthalpy being calculated relative to the amount of the binder. The binders are applied to the effect pigment by way of spontaneous precipitation.

公开(公告)号：US20230250298A1

公开(公告)日：2023-08-10

申请号：US18103033

申请日：2023-01-30

申请人： ECKART GmbH

发明人： Burkhard Schreiber

IPC分类号： C09D5/03 ,  C09C1/00 ,  C09D5/36 ,  C09D167/02

CPC分类号： C09D5/032 ,  C09C1/0021 ,  C09D5/36 ,  C09D167/02 ,  C09C2200/1054 ,  C09C2200/406 ,  C09C2220/103

摘要： The invention relates to coated effect pigments, wherein the coating comprises a binder which is suitable for powder paints. They comprise a crystalline and an amorphous fraction which is determined by C13 NMR MAS relaxation measurements, the relaxation of the 13C cores being fitted as a biexponential relaxation according to the formula (II) and the degree of crystallinity c being in a range between 40 to 85%, and relaxation having a short average relaxation time T1s and a long average relaxation time T1l, and T1l being in a range of from 65 to 130 s. The effect pigments coated according to the invention have at least one endothermic peak with a maximum from a range of Tmax=100 to 150° C. and an enthalpy ΔH associated with said peak from a range of 15 J/g to 80 J/g in DSC at a feed speed of 5° C./min, the enthalpy being calculated relative to the amount of the binder. The binders are applied to the effect pigment by way of spontaneous precipitation.