Wear-resistant optical layers and moulded bodies

Details Wear-resistant optical layers and moulded bodies Wear-resistant optical layers and moulded bodies

C - Chemistry, Metallurgy

01

B

C01B 13/14 (2006.01) C01B 33/18 (2006.01) C03C 17/00 (2006.01) C04B 35/10 (2006.01) C04B 35/14 (2006.01) C04B 35/457 (2006.01) C04B 35/46 (2006.01) C04B 35/48 (2006.01) C04B 35/495 (2006.01) C04B 35/632 (2006.01) C04B 35/634 (2006.01) C08F 292/00 (2006.01) C08J 7/04 (2006.01) C09C 1/30 (2006.01) G02B 1/10 (2006.01)

Patent

CA 2527771

A composition is disclosed, comprising surface-modified nano-scale solid particles, with organic groups with active hydrogen groups or precursors thereof on the surface, in particular, with hydroxy groups and/or epoxy groups and at least one cyanate, the cyanate groups of which are optionally protected. The moulded bodies or coated substrates obtainable with the composition are characterised by high transparency and high wear-resistance and are thus particularly suitable for optical applications.

L'invention concerne une composition qui comprend des particules solides de l'ordre du nanomètre modifiées en surface, qui présentent, sur leur surface, des restes organiques avec des groupes comportant de l'hydrogène actif ou des précurseurs de ceux-ci, en particulier avec des groupes hydroxy et/ou des groupes époxyde, et au moins un isocyanate dont les groupes isocyanates sont éventuellement bloqués. Des corps moulés ou les substrats recouverts pouvant être obtenus avec cette composition se caractérisent par une transparence élevée et une grande résistance à l'abrasion, et ils peuvent donc en particulier être utilisés en optique.

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