US 10,947,410 B2 · Coated granular material

Abstract

The present invention relates to a coated granular substance, wherein the coating comprises a resin comprising the reaction product of a polyol component and an isocyanate component and cured by the addition of a catalyst, said catalyst comprising a hydroxy group-containing amine compound. Further, the present invention relates to a process for coating a granular substance, comprising the steps of (a) providing a granular substance; (b) providing a polyol component and an isocyanate component; (c) optionally mixing the polyol component with the isocyanate component; (d) adding the mixture of step (c) or the polyol component and the isocyanate component as individual substances to the provided granular substance and producing a coating on the granular substance; (e) adding a catalyst to cure the coating; (f) optionally repeating steps (d) and (e), wherein the catalyst comprises a hydroxy group-containing amine compound.

Claims15

Dependent claims

A coated granular substance, wherein the coating comprises a resin comprising the reaction product of a polyol component and an isocyanate component and cured by the addition of a catalyst, said catalyst comprising at least one hydroxy group-containing amine compound of the general formula (I):

wherein
R1 is a C1 to C4 alkyl group;
R2 is a C1 to C4 alkyl group;
R3 is a C1 to C4 alkyl group, a group —(CH2)q—CH(OH)R5 or a group —CH2—(CH2)r—NR6R7;
R4 is a hydrogen atom or a C1 to C4 alkyl group;
R5 is a hydrogen atom or a C1 to C4 alkyl group;
R6 is a C1 to C4 alkyl group;
R7 is a C1 to C4 alkyl group;
m is an integer of from 0 to 10;
n is an integer of from 0 to 10;
o is an integer of from 1 to 10;
p is an integer of from 0 to 10;
q is an integer of from 1 to 10;
and
r is an integer of from 0 to 10,
wherein the polyol component comprises one or more condensation products of a phenol and an aldehyde, and/or at least one compound selected from the group consisting of a cardol, a cardol derivative, a cardol oligomer, a cardanol, a cardanol derivative, and a cardanol oligomer.

13 more elements

Dependencies are inferred from the claim text.

Coated granular material

Life of this patent

Coated granular material

Life of this patent

Abstract

Claims15