Wax-based coloring crayon with a watercolor effect
US-10774232-B2 · Sep 15, 2020 · US
Wax crayon comprising zro2
US2025034422A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025034422-A1 |
| Application number | US-202218715526-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 20, 2022 |
| Priority date | Dec 22, 2021 |
| Publication date | Jan 30, 2025 |
| Grant date | — |
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Abstract
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The present disclosure relates to a writing instrument comprising a lead, wherein the lead comprises at least about 0.5 wt.-% ZrO2, relative to the total weight of the lead, in particular wherein the lead comprises less than about 0.5 wt.-%, more specifically less than about 0.2 wt.-% and in particular substantially no or no TiO2.
First claim
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1 . A writing instrument comprising a lead, wherein the lead comprises at least about 0.5 wt.-% ZrO 2 , relative to the total weight of the lead. 2 .- 15 . (canceled) 16 . The writing instrument according to claim 1 , wherein the lead comprises less than about 0.5 wt.-% of TiO 2 , relative to the total weight of the lead. 17 . The writing instrument according to claim 1 , wherein the lead comprises 1) substantially no TiO 2 or 2) no TiO 2 . 18 . The writing instrument according to claim 1 , wherein the lead comprises between about 1 wt.-% to about 25 wt.-% of ZrO 2 , relative to the total weight of the lead. 19 . The writing instrument according to claim 1 , wherein an external surface of the lead has an L*-value of at least 40 and wherein the lead comprises between about 11.0 wt.-% to about 20 wt.-% of ZrO 2 , relative to the total weight of the lead. 20 . The writing instrument according to claim 1 , wherein the external surface of the lead has an L*-value of less than 40 and wherein the lead comprises between about 0.5 wt.-% to about 10.9 wt.-% of ZrO 2 , relative to the total weight of the lead. 21 . The writing instrument according to claim 1 , wherein the lead comprises the ZrO 2 in the form of particles. 22 . The writing instrument according to claim 21 , wherein the ZrO 2 particles have a D 50 between about 0.1 μm to about 17 μm. 23 . The writing instrument according to claim 21 , wherein the ZrO 2 particles have a D 50 between about 0.2 μm to about 10 μm. 24 . The writing instrument according to claim 21 , wherein the ZrO 2 particles have a D 50 between about 0.5 μm to about 50 μm. 25 . The writing instrument according to claim 21 , wherein the ZrO 2 particles have a BET-value between about 0.5 m 2 /g to about 22 m 2 /g measured according to DIN ISO 9277:2014-01. 26 . The writing instrument according to claim 21 , wherein the ZrO 2 particles have a BET-value between about 2.5 m 2 /g to about 20 m 2 /g, measured according to DIN ISO 9277:2014-01. 27 . The writing instrument according to claim 1 , wherein the lead has a diameter between about 5 mm to about 35 mm. 28 . The writing instrument according to claim 1 , wherein the lead comprises about 0.005 wt.-% to about 3.45 wt.-% of one or more metal oxides or transition metal oxide from the second, third, fourth and/or thirteenth group of the periodic table, relative to the total weight of the lead. 29 . The writing instrument according to claim 1 , wherein the lead comprises between about 10 wt.-% to about 90 wt.-% of one or more waxes, relative to the total weight of the lead. 30 . The writing instrument according to claim 1 , wherein the lead comprises between about 10 wt.-% to about 45 wt.-% of one or more waxes, relative to the total weight of the lead. 31 . The writing instrument according to claim 1 , wherein the lead comprises between about 1 wt.-% to about 20 wt.-% of a fatty acid or salt thereof, relative to the total weight of the lead. 32 . The writing instrument according to claim 1 , wherein the lead comprises between about 5 wt.-% to about 30 wt.-% of a hydrous aluminum phyllosilicate relative to the total weight of the lead. 33 . The writing instrument according to claim 1 , wherein the lead comprises between about 0.05 wt.-% to about 10 wt.-% of one or more pigments, relative to the total weight of the lead. 34 . The writing instrument according to claim 1 , wherein the lead comprises between about 3 wt.-% to about 50 wt.-% of a binder relative to the total weight of the lead.
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- What does patent US2025034422A1 cover?
- The present disclosure relates to a writing instrument comprising a lead, wherein the lead comprises at least about 0.5 wt.-% ZrO2, relative to the total weight of the lead, in particular wherein the lead comprises less than about 0.5 wt.-%, more specifically less than about 0.2 wt.-% and in particular substantially no or no TiO2.
- Who is the assignee on this patent?
- SOCIéTé BIC
- What technology area does this patent fall under?
- Primary CPC classification C09D13/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jan 30 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).