3D-printed products

Abstract

To provide 3D-printed products.SOLUTION: The present invention relates to urethane-acrylate-resin-based 3D-printed products having a colour distance ΔE of less than 20 from the L*a*b* coordinates for a colour number, beginning with "3", of the RAL colour chart, comprising at least one red perinone dye to be selected from 8,9,10,11-tetrachloro-12H-phthaloperin-12-one and / or 14H-benz[4,5]isoquino[2,1-a]perimidin-14-one dissolved therein, to the use of the red perinone dyes for producing 3D-printed products having a colour distance ΔE of less than 20 from the L*a*b* coordinates for a colour number, beginning with "3", of the RAL colour chart by photopolymerization, and to a method for increasing the lightfastness and the colouristic properties of photopolymerizable urethane-acrylate-resin-based compositions and 3D-printed products based thereon by means of at least one red perinone dye to be selected from 8,9,10,11-tetrachloro-12H-phthaloperin-12-one and / or 14H-benz[4,5]isoquino[2,1-a]perimidin-14-one dissolved therein.SELECTED DRAWING: None

Claims

1. A 3D-printed product based on a photopolymerizable composition comprising at least one urethane acrylate-based resin and at least one red perinone dye selected from 8,9,10,11-tetrachloro-12H-phthaloperin-12-one and / or 14H-benz[4,5]isoquino[2,1-a]perimidine-14-one, with respect to the number of colors in the RAL color chart starting with "3". ＊ a ＊ b ＊ 3D-printed products with a color difference ΔE of less than 20 from the coordinates.

2. The 3D printed product according to claim 1, characterized in that the urethane acrylate-based resin is based on urethane acrylate, polyurethane acrylate, or polyether urethane acrylate.

3. The 3D printed product according to claim 1, characterized in that 0.005 to 5 parts by mass of at least one red perinone dye is used per 20 to 99.995 parts by mass of urethane acrylate-based resin.

4. The 3D-printed product according to claim 3, characterized in that, in addition to the at least one red perinone dye, 0.5 to 10 parts by mass of a photopolymerization initiator is further used.

5. The 3D-printed product according to claim 4, characterized in that the photopolymerization initiator has absorption in the wavelength range of 300 to 450 nm.

6. The 3D-printed product according to claim 4, characterized in that, in addition to the at least one red perinone dye and the 0.5 to 10 parts by mass of the photopolymerization initiator, at least one additive is used, comprising 0.001 to 1 part by mass.

7. The 3D-printed product according to claim 6, characterized in that the additive is at least one leveling agent, at least one stabilizer, at least one further dye (different from the red perinone dye), at least one filler, or at least one organic pigment.

8. A 3D-printed product according to any one of claims 1 to 7, characterized in that it is based on photopolymerizable 3D printing using an SLA method 3D printer or a DLP method 3D printer.

9. The use of at least one red perinone dye selected from 8,9,10,11-tetrachloro-12H-phthaloperin-12-one and / or 14H-benz[4,5]isoquino[2,1-a]perimidine-14-one, which exists in a dissolved form, with respect to the number of colors in the RAL color chart beginning with "3". ＊ a ＊ b ＊ Use for improving the lightfastness and color properties of photopolymerizable urethane acrylate resin-based compositions having a color difference ΔE of less than 20 from the coordinates, and 3D-printed products manufactured therefrom, as measured according to DIN EN ISO 4892-2.

10. The use according to claim 9, characterized in that the use of at least one perinone dye in the additive manufacture of a 3D-printed product is provided for photopolymerization-based 3D printing.

11. The use according to claim 9 or 10, characterized in that the photopolymerizable urethane acrylate resin-based composition is based on urethane acrylate, polyurethane acrylate, or polyether urethane acrylate.

12. L regarding the number of colors of the RAL color chart starting with "3" ＊ a ＊ b ＊ A method for improving the light resistance and color characteristics measured according to DIN EN ISO 4892-2 of a photopolymerizable urethane acrylate resin-based composition and 3D-printed products manufactured therefrom, having a color difference ΔE of less than 20 from the coordinates, characterized in that at least one red perinone dye selected from 8,9,10,11-tetrachloro-12H-phthaloperin-12-one and / or 14H-benzo[4,5]isoquinolino[2,1-a]perimidin-14-one is present in a dissolved form in the urethane acrylate resin-based composition.

13. The method according to claim 12, characterized in that the use of the at least one red perinone dye in the additive manufacture of the 3D-printed product is carried out in photopolymerization-based 3D printing.

14. The method according to claim 12 or 13, characterized in that the urethane acrylate resin-based composition is based on urethane acrylate, polyurethane acrylate, or polyether urethane acrylate.

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