Synthesis and Characterization of Allyl Fatty Acid Derivatives as Reactive Coalescing Agents for Latexes

Abstract

This work evaluated the use of allyl fatty acid esters derived from vegetable oil (palmitic acid, soybean and sunflower oils) as reactive coalescing agents in a waterborne latex system. Allyl fatty acid derivatives (AFAD) from vegetable oils were synthesized by two different processes. The synthesis was monitored by IR-spectroscopy and the final product characterized by FT-IR, GC-MS, 1 H and 13 C NMR. The presence of conjugated double bonds in the aliphatic chain was confirmed, which is a determinant for the proposed autoxidative latexes drying mechanism. Each of the AFAD were subsequently added to a standard acrylic emulsion, in order to study its potential as reactive coalescing agent. The minimum film-forming temperature (MFT), glass transition temperature (T g ), drying time and rubbing resistance to solvents were evaluated. The results showed that, when added to water-borne acrylic resins, an AFAD acts as a non-volatile plasticizer capable of autoxidative crosslinking with itself.

Modified soybean oil as a reactive diluent: Synthesis and characterization

“…There is a growing requirement for coalescing agents for water‐borne coatings that are more environmentally friendly and that meet the stricter controls recently implemented in various countries around the world on VOCs. Modified soybean oil is an attractive choice for a reactive coalescing agent in water‐borne systems that can lower the minimum film‐formation temperature and that reacts and is incorporated into the cured coating systems …”

“…Modified soybean oil is an attractive choice for a reactive coalescing agent in water-borne systems that can lower the minimum film-formation temperature and that reacts and is incorporated into the cured coating systems. 41,42…”

Constituents of Aquilaria sinensis Leaves Upregulate the Expression of Matrix Metalloproteases 2 and 9

“…Terpenoids: loliolide (AQ4) [ 17 ], phytol (AQ7) [ 18 ], squalene (AQ15) [ 19 ]; Ligand: syringaresinol (AQ12) [ 20 ]; Phenolics: p- hydroxybenzoic acid (AQ8) [ 18 ], β - truxinic acid (AQ10) [ 21 ], p- hydroxyphenethyl trans -ferulate (AQ13) [ 22 ]; Lipids: methyl (6 Z ,9 Z ,12 Z )-octadecatrienoate (AQ5) [ 23 ], palmitic acid and oleic acid (AQ6) [ 24 , 25 ], methyl-2-hydroxypentanedioate (AQ17) [ 26 ], glyceryl -9 Z -octadecenate (AQ21) [ 27 ], glyceryl 1-monononadecylate (AQ22) [ 28 ], 1-[nonadeca-(9Z,12Z)-dienoyl]-sn-glycerol (AQ23) [ 29 ]; Chromones: 7-hydroxy-6-methoxy-2-[2-(4′-methoxyphenyl)ethyl] chromone (AQ11) [ 30 ], 6-hydroxy-7-methoxy-2-[2-(3′-hydroxy-4′ -methoxyphenyl)ethyl] chromone (AQ16) [ 30 ]; Flavonoids: genkwanin (AQ1) [ 31 ], apigenin (AQ2) [ 32 ], velutin and pilloin (AQ3) [ 33 , 34 ];…”

Fatty Acid-Based Radically Polymerizable Monomers: From Novel Poly(meth)acrylates to Cutting-Edge Properties

“…65,66 However, in order to ensure high conversion, a significant excess of alcohol and high temperatures must be used. 67 As a result, different experimental strategies of (trans)esterification were reported in literature in the recent years. For instance, Barbosa et al have experimented two different processes to afford new allyl and acrylic FA derivatives both from vegetable oils via two-step esterification and transesterification strategies.…”