Organocatalytic Chemoselective Monoacylation of 1,n-Linear Diols
作者:Keisuke Yoshida、Takumi Furuta、Takeo Kawabata
DOI:10.1002/anie.201100700
日期:2011.5.16
Matters of length: Exclusive or predominant monoacylation of 1,n‐linear diols took place in the presence of 1 when the chain length of linear diols was equal to or shorter than five carbon atoms. The chemoselectivity of acylation between 1,5‐pentanediol (n=5) and 1,6‐hexanediol (n=6) was 5.2, and that between 1,5‐pentanediol and its monoacylate was 113.
ACRYLIC REDISPERSIBLE POLYMER POWDER FOR NON-CEMENTITIOUS EXTERIOR FINISHING COMPOSITIONS
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:US20150337158A1
公开(公告)日:2015-11-26
The present invention provides a water redispersible polymer powder (RDP) for use in the preparation of non-cementitious exterior finishing compositions such as textured paint formulations. Also provided are non-cementitious exterior finishing compositions comprising such RDPs and a method of coating a surface with such a finishing composition. When the RDP of the invention is incorporated into an exterior finishing composition such as a topcoat formulation of an external insulation finishing system (EIFS), the resultant composition provides improved dirt pickup resistance without a loss in wet abrasion resistance over conventional textured paint formulations comprising acrylic latex powders and, preferably, acrylic latexes.