Reaktionsgleichung
N[CH2:2][CH2:3][CH2:4][Si:5]([O:12][CH2:13]C)([O:9][CH2:10]C)[O:6][CH2:7]C.[CH2:15]([C:17]([CH3:19])=[O:18])C.[OH2:20]>>[CH2:15]([O:20][CH2:2][CH2:3][CH2:4][Si:5]([O:6][CH3:7])([O:9][CH3:10])[O:12][CH3:13])[CH:17]1[O:18][CH2:19]1Komponenten
Versuchsvorschrift
Into a sealable, glass container were charged 50 g of γ-aminopropyl-triethoxysilane (0.226 mole) and 50 g (0.694 mole) methyl ethyl ketone. The mixture was allowed to stand one hour to permit the ketimine to form. Then 106.8 g (0.4525 mole) of γ-glicidoxypropyl-trimethoxysilane, 117.2 g of methyl ethyl ketone (1.63 mole) and 12.4 g (0.678 mole) distilled water were added to the ketimine mixture (representing a molar ratio of water per siloxane group of 0.68). The non-volatile solids content was 45 wt. % of the total coating composition, which was composed of the first component, or ketimine, and the second component (formed via partial hydrolysis of the γ-glycidoxypropyl-trimethoxysilane). The coating composition was allowed to age for about one hour, and then a sample was drawn down onto a degreased panel of polyallyl diglycol carbonate with a #22 wire wound coating rod. The coating was cured by baking at 15 hours at 80° C. The adhesion, as tested by ASTM D3359, was 100%. The scratch resistance on a Gardner Labs Scratch and Adhesion Tester was 148 g. The surface, when rubbed 100 times at 40 psi with 000 steel wool exhibited 1 or 2 scratches, but no scratches after 100 rubs at 30 psi. The usable pot life was 16-18 hours.
Aufarbeitung
- customto form
Quellen und Nachweise
- ORD-Eintrag
- ord-3f81246e1e3d491f9ddd2a63d3cdf7c9
- Quelldatensatz
- uspto-grants-1983_03
- Patentnummer
- US04378250
Verknüpfte Notizen
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