High build polyurethane coatings

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 175/12 (2006.01) C09D 5/04 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2218174

A composition of matter for forming a protective coating comprising a polyisocyanate component, an isocyanate reactive component comprising at least one compound corresponding to the formula I (see fig. I) where X represents a divalent hydrocarbon group obtained by the removal of the amino groups from 1,4-diaminobutane, 1,6-diaminohexane, 2,2,4- and 2,4,4-trimethyl-1,6-diaminohexane, 1-amino-3,3,5-trimethyl-5-aminomethyl-cyclohexane, 4,4'-diamino-dicyclohexyl methane or 3,3-dimethyl-4,4'-diamino-dicyclohexyl methane, R1 and R2 may be the same or different and are organic groups that are inert towards isocyanate groups at a temperature of 100°C or less, R3 and R4 represent hydrogen and n represents 2, and a thixotropic component comprising at least twothixotropic compounds that bind to each other.

Composition pour obtenir un revêtement protecteur, renfermant : un constituant à base de polyisocyanate; un constituant réagissant avec les isocyanates, comprenant au moins un composé correspondant à la formule I (voir fig. I), dans laquelle X représente un groupe hydrocarboné divalent, obtenu par élimination des groupes amino dans les composés 1,4-diaminobutane, 1,6-diaminohexane, 2,2,4- et 2,4,4-triméthyl-1,6-diaminohexane, 1-amino-3,3,5-triméthyl-5-aminométhylcyclohexane, 4,4'-diaminodicyclohexylméthane ou 3,3-diméthyl-4,4'-diaminodicyclohexylméthane, R1 et R2 peuvent être identique ou différents, soit des groupes organiques inertes vis-à-vis des groupes isocyanate à une température de 100 degrés C ou moins, R3 et R4 représentent de l'hydrogène et n est égal à 2; un constituant thixotrope renfermant au moins deux composés thixotropes liés l'un à l'autre.

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