Preparation and Properties of Polyester Modified Waterborne High Hydroxyl Content and High Solid Content Polyacrylate Emulsion

Abstract

A high hydroxyl content waterborne polyester-acrylate emulsion was successfully synthesized in two steps. Firstly, the carboxyl terminated unsaturated polyester was synthesized, then it was reacted as a monomer with acrylate monomer by emulsion polymerization using the semi-continuous seeded method. The effects of the amount of hydroxyethyl methacrylate (HEMA), the ratio of polyester/acrylic, the ratio of soft/hard monomer, and the content of chain transfer agent to the properties of the composite emulsion were investigated. Through a variety of tests, both the emulsion and film properties of the composite emulsion were better than polyacrylate emulsion. The introduction of polyester improved the flexibility and impact resistance of hydroxyl acrylate film, and made the modified resin have advantages of both.

Emulsifier-Free Acrylate-Based Emulsion Prepared by Reverse Iodine Transfer Polymerization

“…But when the emulsions are used as metal coatings, the migration of the residual emulsifier migration to the surface of the polymer films may result in shrinkage, a decrease of the coating gloss, etc., and metal surface can confer water sensitivity to the films, leading to loss of the protective effect of coating [11]. Polymeric emulsifier, which can be chemically bonded to the polymer chain, is then introduced into the emulsion system [12][13][14][15]. For emulsion prepared by conventional radical polymerization [12], polymeric emulsifier SE-10 takes part in the stabilization of the polyacrylate emulsion.…”

Photocurable and elastic polyurethane based on polyether glycol with adjustable hardness for 3D printing customized flatfoot orthosis

“…Acrylate monomers can be classified into two types according to the T g : hard monomers have a high T g , which provides hardness and abrasion resistance to the composites, whereas the monomers with a relatively low T g are soft monomers that affect flexibility and viscosity. 46 To ensure the printing effect while satisfying the mechanical properties of the insoles, IBOA and BA were chosen to formulate the photo-curable resin. Further studies on the dosages of IBOA and BA were performed.…”

Improving water resistance and mechanical properties of waterborne acrylic resin modified by 3,3′,5,5′-tetramethyl-4,4′-biphenyl diglycidyl ether

“…It is expected that the global sales of coating products will grow to 209.8 billion dollars by 2026. Under these conditions, if the problems of poor water resistance and mechanical strength of acrylic resin can be solved, it will be of great research significance to successfully prepare a high performance waterborne acrylic resin [14].…”