Preparation of Hexamethyldisilazanomethacryloxyphenyl ketone (HDMK) and its copolymerization in the presence of acrylates

• Published in: Pigment & resin technology Vol. 49; no. 1; pp. 19 - 25
• Main Authors: Naghash, Hamid Javaherian, Amiri, Ali
• Format: Journal Article
• Language: English
• Published: Bradford Emerald Publishing Limited 06.01.2020; Emerald Group Publishing Limited
• Subjects: Abrasion resistant coatings; Acids; Acrylates; Acrylic resins; Chemical industry; Chemical synthesis; Copolymerization; Copolymers; Decomposition; Dibenzoyl peroxide; Monomers; NMR; Nuclear magnetic resonance; Paints; Polymerization; Polymers; Polymethyl methacrylate; Protective coatings; Resins; Scientific papers; Solution polymerization; Storage stability; Surface stability; Temperature; Toluene; Water resistance; United States > US; Hexamethyldisilazanomethacryloxyphenyl ketone; Acrylic resins; Free radical chemistry; Chemical reactions; Coating; Butylacrylate copolymer; Resins; Methyl methacrylate
• ISSN: 0369-9420; 1758-6941
• DOI: 10.1108/PRT-02-2019-0021

Purpose This paper aims to improve some properties of poly (methyl methacrylate) by copolymerization with butyl acrylate (BA) monomer along with the incorporation of the stable and economical synthesized silicone-containing monomer hexamethyldisilazanomethacryloxyphenyl ketone (HDMK) into the copolymer matrix. Design/methodology/approach For this target solution copolymerization of methyl methacrylate (MMA), BA and HDMK were carried out using a 250 mL four-necked round-bottom flask. Before solution polymerization start-up, the reaction vessel was first charged with 34.8 mL toluene and heated to 170 °C with stirring and reflux cooling. A monomer mixture of 25.86 g (260 mmol) MMA, 26.40 g (200 mmol) BA, 3.00 g (8.60 mmol) HDMK and 0.45 g (2.00 mmol) dibenzoyl peroxide was added continuously from the dropping funnel over a period of 4 h. Findings The HDMK was successfully synthesized and the water resistance of acrylic resins was improved because of the existence of HDMK. Research limitations/implications The materials that were used in this research paper had a reasonably low cost. Also, the procedures for synthesis of monomers and polymers were extremely easy because there was no need for high pressure or temperature and no dangerous solvents were used. Practical implications The acrylic resin that contained HDMK was used to synthesis a white architectural paint for exterior coating. Examining the paint characteristics has shown acceptable washing and abrasion resistance, good brushing, excellent storage stability and great surface coating. Originality/value HDMK was synthesized for the first time.