Patent ID: 11912904
Assignee: NOURYON CHEMICALS INTERNATIONAL B.V.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method for preparing an adhesive composition, in which an aqueous phase comprising a modified colloidal silica is contacted with an organic phase comprising one or more monomers in the presence of an initiator, wherein conditions are maintained such that polymerisation of the one or more monomers occurs to form a polymeric dispersion, wherein
(i) the polymeric dispersion comprises polymer particles with protective colloid on their surface;
(ii) the modified colloidal silica comprises colloidal silica particles with at least one surface-bound hydrophilic organosilane moiety and/or comprises colloidal silica particles with at least one additional element on their surface, the element being able formally to adopt a +3 or +4 oxidation state; and
(iii) the initiator is at least partially soluble in water,, wherein at least one monomer is according to Formula 1;, , where:, R1 and R2 on each occurrence are independently selected from H, halide and C1-20 alkyl, and where each C1-20 alkyl can optionally be substituted with one or more groups selected from hydroxyl, halide, oxygen, —OR3 and —N(R3)2 wherein the oxygen forms a C═O moiety;, R3 on each occurrence is independently selected from H and optionally substituted C1-6 alkyl, where the optional substituents are hydroxyl, halide, amino, C1-6 alkoxy, C1-6 alkyl-amino and C1-6 dialkyl amino;, in the group —(CZ2)f—, each Z is independently selected from H, halide, C1-3 alkyl and C1-3 haloalkyl; and f is a whole number in the range of from 0 to 4;, X is selected from:, —R4,, , R4 on each occurrence is independently selected from C5-8 aryl and C5-8 heteroaryl groups, optionally substituted with one or more groups selected from hydroxyl, halide, —N(R3)2, nitrile, C1-10 alkyl, C1-10 haloalkyl, C1-10 alkoxy and C1-10 haloalkoxy, wherein the heteroaryl group comprises one or more heteroatoms in the ring, each independently selected from O, S and N; and, R5 on each occurrence is independently selected from H, optionally substituted C1-20 alkyl and optionally substituted C1-20 alkenyl, the optional substituents being selected from one or more of hydroxyl, halide and —N(R3)2.