Evaluation of alternative comonomers for the production of ASE and HASE thickeners

Moraes, Raul P.; Graillat, C.; Jeanson, Guillaume; Haw, Sarah; Favero, Cédrick; McKenna, Timothy F. L.

doi:10.1016/j.jcis.2010.08.038

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…HASE systems represent an improvement over non‐modified alkali‐soluble emulsions (ASE), as they show associative behavior based on hydrophobic segments, which can aggregate in the aqueous phase. This behavior shares strong similarities with surfactant micellation and leads to drastically altered rheological and mechanical properties . It should be noted, that ASE systems already serve as an important material class for water‐based adhesives, e.g., for labeling applications.…”

Section: Introductionmentioning

confidence: 93%

Water‐Based Adhesives with Tailored Hydrophobic Association: Dilution Resistance and Improved Setting Behavior

Dundua

Landfester

Taden

2014

Macromol. Rapid Commun.

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Hydrophobic association and stimuli-responsiveness is a powerful tool towards water-based adhesives with strongly improved properties, which is demonstrated based on the example of hydrophobically modified alkali-soluble latexes (HASE) with modulated association. Their rheological properties are highly tunable due to the hydrophobic domains that act as physical crosslinking sites of adjustable interaction strength. Ethanol, propanol, and butanol are used as water-soluble model additives with different hydrophobicity in order to specifically target the association sites and impact the viscoelastic properties and stimuli-responsiveness. The rheological and mechanical property response upon dilution with water can be tailored, and dilution-resistant or even dilution-thickening systems are obtained. The investigations are of high importance for water-based adhesives, as our findings provide insight into general structure-property relationships to improve their setting behavior, especially upon contact with wet substrates.

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Section: Introductionmentioning

confidence: 93%

Water‐Based Adhesives with Tailored Hydrophobic Association: Dilution Resistance and Improved Setting Behavior

Dundua

Landfester

Taden

2014

Macromol. Rapid Commun.

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“…Moraes et al [30] investigated MMA, BA, and EHA as alternatives to EA in the composition of methacrylic acid (MAA)-EA copolymers for the production of hydrophobically-modifi ed alkali-soluble emulsions. Th e EHA gave reasonable results as a replacement comonomer for the synthesis and applications of alkali-soluble emulsion.…”

Section: Copolymers Of Acrylic Estersmentioning

confidence: 99%

Environmentally‐Friendly Acrylates‐Based Polymer Latices

Shukla¹,

Rai

2014

Advanced Materials for Agriculture, Food, and Environmental Safety

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Acrylic copolymers have achieved prime importance in various avenues of industrial application such as adhesive in packaging and construction, binder and stabilizer in textiles, base coat in leather, topcoat in fl oor polish, pigment binder in paper industries, etc. Acrylic resins are generally known to have superior exterior durability and weather resistance compared to other organic binders/fi lm-formers commonly used in surface coatings. Th e emulsion polymerization of acrylic monomers provides a good combination of performance properties required in fi lm formation. Th ese properties depend on the copolymer composition, particle size, molecular weight, glass transition temperature (Tg), morphology of the latex particles, etc.In this chapter, the reaction components and polymerization process conditions that aff ect the inherent characteristics of the polymers are presented. Th ere is a discussion of the incorporation of comonomer, which would lead to an improvement in the fl exibility of fi lms produced along with adhesion, gloss, hardness, solvent resistance, water resistance, etc. Also, there is a recently developed successful approach for achieving balanced properties which involves the copolymerization of fi lm-forming monomers like acrylate and methacrylates with crosslinkable monomers.

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Hydrophobically Modified Alkali Soluble Emulsion Polymers: Literature Review

Vitiello

Rossano

Krauss

et al. 2019

J Surfact & Detergents

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In recent years, interest in the class of water‐soluble polymers—hydrophobically modified alkali soluble emulsion (HASE)—has increased on a surprising scale. With respect to other associative polymers, they have several advantages in terms of cost and ease of handling and utilization. In addition, unlike the solvent‐based formulations, these water‐soluble systems do not contain volatile solvents and hence do not contribute to environmental problems. In solutions, HASE polymers form a transient network through molecular associations between the hydrophobic groups. Due to these hydrophobic interactions, they have been increasingly used as rheology modifiers for various applications, such as paints, cosmetics, and personal care and paper coating products. These associative polymers have an architectural richness that allows the fine tuning of several physicochemical properties, and their optimal use requires controlling polymer concentration, molecular weight, size of the hydrophobic groups, and characteristics of the polymeric backbone. We give an overview of several studies on HASE polymers reported in the literature, focusing on the molecular structure, the synthetic methodologies, and—more specifically—on the factors that affect the rheology of their aqueous mixtures. As a general rule for the optimal HASE design and formulative exploitation, we highlight that the hydrophobic hanging groups are responsible for the rheological changes in the liquid phase, while the steric hindrance of the polymeric backbone and of the hydrophobic groups causes the stiffness.

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Evaluation of alternative comonomers for the production of ASE and HASE thickeners

Cited by 5 publications

References 33 publications

Water‐Based Adhesives with Tailored Hydrophobic Association: Dilution Resistance and Improved Setting Behavior

Water‐Based Adhesives with Tailored Hydrophobic Association: Dilution Resistance and Improved Setting Behavior

Environmentally‐Friendly Acrylates‐Based Polymer Latices

Hydrophobically Modified Alkali Soluble Emulsion Polymers: Literature Review

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