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 17 publications

(14 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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%

See 1 more Smart Citation

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

Li,

Scheiger,

Wang

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

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.

show abstract

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

View full text Add to dashboard Cite

show abstract

“…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.

View full text Add to dashboard Cite

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.

show abstract

“…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

View full text Add to dashboard Cite

show abstract

Acrylic Acid and Derivatives

Cited by 17 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

Contact Info

Product

Resources

About