Acrylic Acid and Derivatives

Ohara, Takayoshi; Sato, Takuma; Shimizu, Noboru; Prescher, G.; Schwind, Helmut; Weiberg, Otto; Marten, Klaus; Greim, Helmut; Shaffer, Timothy D.; Nandi, Partha

doi:10.1002/14356007.a01_161.pub4

Cited by 18 publications

(14 citation statements)

References 24 publications

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“…To demonstrate that UV photodegraded NaPA gels are suitable as a resource for applications as lacquers and as PSAs, photodegraded NaPA was further esterified with n -butanol or 2-ethylhexanol (Figure A). Alcohols are commonly used in the chemical industry to convert acrylic acid to the respective acrylates . The synthesis procedure of McNeil and co-workers was followed; however, here an excess sulfuric acid (1.00 instead of 0.25 equivalent) was added to acidify sodium polyacrylate.…”

Section: Resultsmentioning

confidence: 99%

“…Alcohols are commonly used in the chemical industry to convert acrylic acid to the respective acrylates. 36 The synthesis procedure of McNeil and coworkers 27 was followed; however, here an excess sulfuric acid (1.00 instead of 0.25 equivalent) was added to acidify sodium polyacrylate. 1 H NMR and 13 C NMR measurements confirmed the successful synthesis of both poly(butyl acrylate) (PBA) and poly(2-ethylhexyl polyacrylate) (PEHA) (Figure 4B,C).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Diapers to Thickeners and Pressure-Sensitive Adhesives: Recycling of Superabsorbers via UV Degradation

Li,

Scheiger,

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Superabsorbers based on crosslinked sodium polyacrylate polymers cannot be easily recycled, resulting in 2 million tons of superabsorbers being landfilled or burned every year. A fast and efficient strategy to recycle superabsorbers would significantly alleviate environmental pollution and promote a sustainable use of these polymers. Herein, the rapid recycling of crosslinked sodium polyacrylate hydrogels based on their inherent UV degradation is demonstrated without the need for chemicals besides water. A quantitative conversion of crosslinked sodium polyacrylate into soluble sodium polyacrylate is achieved in minutes, almost 200 times faster than a previous approach based on de-esterification. The obtained soluble sodium polyacrylate can be used, for example, as a thickener for aqueous dyes or can be esterified with n-butanol or 2-ethylhexanol to serve as a pressure-sensitive adhesive. The UV photodegradation and esterification of superabsorbers is fast, scalable, safe, and economical and yields polymers with controllable molecular weight in the range of 100−400 kg/mol. It thus offers distinct advantages over the chemical de-crosslinking strategies presented previously.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Diapers to Thickeners and Pressure-Sensitive Adhesives: Recycling of Superabsorbers via UV Degradation

Li,

Scheiger,

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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“…The water distillated from the wastewater is recycled and reused to remove AA in the water washing tower. The obtained concentrated waste from the water distillation tower is incinerated. , Another approach of AA wastewater treatment, which is out of the scope of this study, is to send the waste resulting from AA removal to a biological wastewater treatment plant. This alternative avoids having to consume energy for water distillation, but it consumes much more water without water recovery …”

Section: Methodsmentioning

confidence: 99%

“…The operating time is 8000 h per year in total in this study. Given that the reaction time of esterification is 4 h per batch and the reactor downtime is 6 h per batch, the operating time in total is 10 h per batch. It results in 800 batches per year.…”

Section: Methodsmentioning

confidence: 99%

Acrylic Acid Removal Using Membrane Contactors during Acrylate Downstream Processing: A Techno-economic Assessment

Yang,

Buekenhoudt,

Van Dael

et al. 2024

Ind. Eng. Chem. Res.

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In the acrylate industry, the conventional acrylic acid (AA) removal process uses a water washing tower that features a large water consumption of approximately 10 m 3 /kg of AA and by consequence entails an energy-intensive distillation step in the downstream processing (DSP). In light of waste prevention, we propose and report on the experimental evidence of a proof-ofconcept alternative process using TiO 2 ceramic membrane contactors to extract AA from the acrylate DSP. Experimental results allow us to estimate the overall mass transfer coefficient of the proposed membrane system, being 0.003 m 3 /m 2 h, which is crucial for the design of membrane contactors. Having established its design, we perform a technoeconomic analysis (TEA) for the acrylate production process using membrane contactors for AA removal. The acrylate production cost is estimated with a focus on DSP with the membrane contactors. The results are benchmarked with the conventional process using a water washing tower for AA removal. 2-Ethylhexyl acrylate (2-EHA) is taken as the model product with a yield of 20,000 t/year. We find that for the membrane contactors to be cost-competitive with the water washing tower, the overall mass transfer coefficient of AA needs to increase to 0.005 m 3 /m 2 h while keeping the other parameters constant.

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“…On the other hand, C3 building blocks such as acrylates have made a tremendous impact in organic synthesis, polymer/materials chemistry and biology due to their versatile chemical and physicochemical properties. 5 In the course of our ongoing work 2 c on acylborons, we became interested to develop a C3 building block having acrylic and boronate motifs directly connected to each other. We envisioned that this acrylic boronate ( 1 ) would open-up opportunities to access novel acylborons and other organoborons that would be difficult to prepare using existing methods.…”

Section: Introductionmentioning

confidence: 99%

Acrylic boronate: a multifunctional C3 building block for catalytic synthesis of rare organoborons and chemoselective heterobifunctional ligations

2021

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Acrylic Acid and Derivatives

Cited by 18 publications

References 24 publications

Diapers to Thickeners and Pressure-Sensitive Adhesives: Recycling of Superabsorbers via UV Degradation

Diapers to Thickeners and Pressure-Sensitive Adhesives: Recycling of Superabsorbers via UV Degradation

Acrylic Acid Removal Using Membrane Contactors during Acrylate Downstream Processing: A Techno-economic Assessment

Acrylic boronate: a multifunctional C3 building block for catalytic synthesis of rare organoborons and chemoselective heterobifunctional ligations

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