Crosslinking systems and film properties for surfactant-free latexes based on anhydride-containing polymers

Preparation, Characterization and Properties of some Acrylic Base Latex: A Review

“…This distinctive aspect of polymerisation emulsion provides a wide range of design options for various polymers and latexes. Like polymers which have high molecular-weight, even copolymers, hard-to-copolymer monomers with core copolymers, functional (surface modified) latexes, even size latex particles, grafted latex, core-shell, microdomain structures, multi-penetration polymers [15][16] . In this field many researchers suggest different ideas to improve the properties of acrylic latex by adding other functional monomers.…”

Erratum

“…Here, we used the nucleophilic attack of ammonia to remove the RAFT endgroup and to convert the endgroup of the polymer chain into a thiol. An advantage of this method is that while the RAFT endgroup is being removed from the polymer chains, and thus the color is removed, the maleic anhydride units of the PSMA copolymer are simultaneously ring‐opened, which renders them water soluble 66. In the experiments carried out in this study, a three‐fold molar excess of ammonia over the maleic anhydride units was used to ensure that all the maleic anhydride units would react with ammonia53 and a 20‐fold molar excess of ammonia to polymer was used to fully remove the thiocarbonyl thio moiety from the polymer chains.…”

“…Wooley and coworkers reported the cross‐linking of acrylic acid with an alkyl diamine in the presence of carbodiimide,46 whereas Armes and coworkers described the cross‐linking of (dimethylamino)ethyl methacrylate (DMAEMA) via quaternization of the tertiary amine group in the presence of 1,2‐bis(2‐iodoethoxyethane) and the cross‐linking of 2‐aminoethyl methacrylate hydrochloride (AMA) via Michael‐addition with a diacrylate 35, 36, 38, 67. An easily accessible route for the cross‐linking of the maleic anhydride units in the PSMA copolymer is via reaction with an alkyl dihydrazide 66. Although maleic anhydride is well known to react with primary and secondary amines and hydrazides, both intermolecular and intramolecular cross‐linking can occur.…”

Regioselective palladium-catalysed aerobic oxidation of dextran and its use as a bio-based binder in paperboard coatings

“…However, the formation of hydrazones at ambient temperatures is well-known in literature for several coating applications. [8][9][10][11][12][13][14] This is because the hydrazone formation is a dehydration reaction whose equilibrium is on the side of the hydrazone and accelerated during the drying process of the coating. The most common dihydrazide crosslinker is adipic dihydrazide (ADH), and the production of bio-based adipic acid in high yield and selectivity has been developed.…”