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Title: PU Dispersions - Effect of Glycol in Polyol Moiety on the Properties of PU Coatings
Authors: Patil, R N
Kapadi, U R
Wani, Y R
Hundiwale, D G
Keywords: Polyurethane dispersion;Diisocynate;Coating;Glycol;Polyol moiety
Issue Date: Oct-2003
Publisher: NISCAIR-CSIR, India
Abstract: Polyurethane dispersions are binary colloidal systems having PUR particles dispersed in aqueous phase, which can be classified into anionic, cationic, and non-ionic systems, In this paper, PUR ionomers prepared by anionic dispersions process, using toluene di-isocynate [TDI], polyester polyol, and trimelletic anhydride [TMA] as the potential ionic center with NMP as the co-solvent are discussed. A series of polyols based on various glycols have been prepared while keeping the composition of the reactants the same. It is found that the dispersion prepared by a polyol containing neopentyl glycol [NPG] gives better results of a coated film with respect to gloss, scratch resistance, flexibility, and abrasion resistance.
Page(s): 1020-1023
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.62(10) [October 2003]

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