Patent ID: 11931447
Assignee: DOW GLOBAL TECHNOLOGIES LLC
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 0:
1. A polymer/hydrophilic silica blend comprising:
(a) a thickening polymer powder, wherein the thickening polymer powder comprises:
(i) 84 to 95 wt %, based on weight of the thickening polymer powder, of structural units of C4-8 alkyl (meth)acrylate monomer;
(ii) 0.1 to 6 wt %, based on weight of the thickening polymer powder, of structural units of (meth)acrylic acid monomer, and
(iii) 1 to 10, based on weight of the thickening polymer powder, of structural units of a specialized associative monomer of formula (I), wherein R1 is a linear saturated C10-20 alkyl group; and n is an average of 20 to 28; and

(b) a hydrophilic silica powder;, wherein the weight ratio of hydrophilic silica powder to thickening polymer powder in the polymer/hydrophilic silica blend is 1:9 to 9:1.