Additives for imparting mar and scratch resistance and...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

Reexamination Certificate

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Details

C524S265000, C524S267000, C524S493000, C524S588000, C524S597000

Reexamination Certificate

active

10317971

ABSTRACT:
Additives comprising dispersed silica nanoparticles are disclosed. The silica nanoparticles are dispersed in an aminoplast, such as a modified aminoplast formed from the reaction between an aminoplast, a modifying component, and optionally a siloxane. The resulting additives can be added to coating compositions to provide improved mar and/or scratch resistance.

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patent: 5068063 (1991-11-01), Tremper, III
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patent: 6586483 (2003-07-01), Kolb et al.
patent: 01/09231 (2001-02-01), None
Abstract WO 01/09231.

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