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公开(公告)号:US20210206989A1
公开(公告)日:2021-07-08
申请号:US17130322
申请日:2020-12-22
申请人: Société BIC
发明人: Julien GOUEREC
IPC分类号: C09D13/00
摘要: There is a polymer-based extrudable non-calcined pencil lead having a lamellar mineral filler having a lamellarity index greater than 2.8, advantageously greater than 3.5, in particular greater than 4. There is also a pencil having such a lead and the use of a lamellar mineral filler having a lamellarity index greater than 2.8 to improve the flexural resistance and/or the smoothness, and/or the vividness of a polymer-based extrudable non-calcined pencil lead.
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公开(公告)号:US20210394549A1
公开(公告)日:2021-12-23
申请号:US17274325
申请日:2019-09-06
申请人: Société BIC
发明人: Julien GOUEREC
摘要: A body for a writing, tracing, drawing or coloring pencil has a composition that has, by weight, with respect to a total weight of the body between 50% and 95% of a mixture of polylactic acid and polybutylene succinate in a polylactic acid/polybutylene succinate ratio by weight of between 90/10 and 60/40 and between 5% and 50% of filler that includes an organic filler, such as wood fibers. A writing, tracing, drawing or coloring pencil includes such a body.
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公开(公告)号:US20230373236A1
公开(公告)日:2023-11-23
申请号:US18247207
申请日:2021-09-24
申请人: SOCIÉTÉ BIC
发明人: Julien GOUEREC
摘要: The present invention relates to a polymer-based extendable lead or refill for writing, drawing and/or painting tools comprising a binder comprising a mixture of polylactide with at least one polymer having a flexural modulus inferior to the flexural modulus of polylactide and at least one filler. It also relates to writing, drawing and/or painting tool, advantageously a pencil, comprising lead or a refill according to the invention and to the use of a binder comprising a mixture of polylactide with at least one polymer having a flexural modulus inferior to the flexural modulus of polylactide according to the invention to improve the vividness of polymer-based extrudable lead or refill for writing, drawing and/or painting tools.
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