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  • 专利标题:   Composition used for coating on substrate, comprises layer comprising colloidal silica and polymer comprising monomer units, and another layer comprising carbon additive and crosslinked polymer comprising polymer comprising monomer units.
  • 专利号:   US2021130643-A1
  • 发明人:   CHAN C M, LI S
  • 专利权人:   NANO ADVANCED MATERIALS INST LTD
  • 国际专利分类:   B05D007/00, B60R021/13, C08F220/06, C08F220/14, C08F220/18, C08F226/06, C08F230/08, C08K003/04, C08K003/36, C09D133/08
  • 专利详细信息:   US2021130643-A1 06 May 2021 C09D-133/08 202173 English
  • 申请详细信息:   US2021130643-A1 US949317 26 Oct 2020
  • 优先权号:   US927734P, US949317

▎ 摘　　要

NOVELTY - A coating composition comprises a layer (L1), and a layer (L2) arranged on top of the layer (L1). The layer (L1) comprises colloidal silica and a polymer (P1) comprising a monomer units (1)-(4). The layer (L2) comprises a carbon additive and a crosslinked polymer comprising a polymer (P2) and a polymer (P3). The polymer (P2) comprises monomer units (5)-(9). The polymer (P3) comprises monomer units (10)-(14). USE - Composition used for coating on substrate e.g. airbag cover (claimed). ADVANTAGE - The composition has excellent coating efficiency and durability, and is prepared by simple method. DETAILED DESCRIPTION - A coating composition comprises a layer (L1) and a layer (L2) arranged on top of the layer (L1). The layer (L1) comprises colloidal silica and a polymer (P1) comprising a monomer units of formulae (1)-(4). The layer (L2) comprises a carbon additive and a crosslinked polymer comprising a polymer (P2) and a polymer (P3). The polymer (P2) comprises monomer units of formulae (5)-(9). The polymer (P3) comprises monomer units of formulae (10)-(14). R_1,R_2 = alkyl;#R_3 = H, or oxygen-silicon covalent bond to at least a portion of the colloidal silica;#R_5-R_9 = alkyl;and#n = number of repeating unit. INDEPENDENT CLAIMS are included for the following: (1) application of the coating composition to a substrate, which involves contacting the surface of the substrate with a composition (I) comprising colloidal silica and the polymer (P1), contacting the surface of the layer (L2) with a composition (II) comprising a carbon additive, a polymer precursor (a), polymer precursor (c) and a polymer precursor (b), forming a thin film arranged on top of the layer (L1), and subjecting the thin film to a condition for facilitating a cycloaddition reaction of the polymer precursor (b) and the polymer precursor (c) by forming the layer (L2) comprising the crosslinked polymer, and (2) a kit, which comprises a container comprising colloidal silica and the polymer (P1) comprising monomer units, and a composition (II) comprising the polymer (P2).