Direct conversion of polyamides to ω-hydroxyalkanoic acid derivatives by using supercritical MeOH

Kamimura, Akio; Kaiso, Kouji; Suzuki, Shuzo; Oishi, Y.; Ohara, Yuki; Sugimoto, T.; Kashiwagi, Kohichi; Yoshimoto, Makoto

doi:10.1039/c1gc15172j

Cited by 37 publications

(30 citation statements)

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“…[177] Kamimura et al described the treatment of Nylon-12 and Nylon-6 with supercritical CH 3 OH to produce methyl w-hydroxydodecanoate,afatty acid ester derivative with potential antimicrobial agent applications with 85 % yield. [178][179][180][181] With regard to polyolefins,H akkarainen et al reported the selective conversion of HDPE wastes to af ew well-defined products,n amely,s uccinic,g lutaric, and adipic acid through microwave assisted acidic hydrolysis. [182] The acids were then converted into plasticizers to be used in PLA processing.…”

Section: New Avenues Towards Value Added Chemicals Via Upcycling Of Wmentioning

confidence: 99%

Beyond Mechanical Recycling: Giving New Life to Plastic Waste

et al. 2020

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Increasing the stream of recycled plastic necessitates an approach beyond the traditional recycling via melting and re‐extrusion. Various chemical recycling processes have great potential to enhance recycling rates. In this Review, a summary of the various chemical recycling routes and assessment via life‐cycle analysis is complemented by an extensive list of processes developed by companies active in chemical recycling. We show that each of the currently available processes is applicable for specific plastic waste streams. Thus, only a combination of different technologies can address the plastic waste problem. Research should focus on more realistic, more contaminated and mixed waste streams, while collection and sorting infrastructure will need to be improved, that is, by stricter regulation. This Review aims to inspire both science and innovation for the production of higher value and quality products from plastic recycling suitable for reuse or valorization to create the necessary economic and environmental push for a circular economy.

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Section: New Avenues Towards Value Added Chemicals Via Upcycling Of Wmentioning

confidence: 99%

Beyond Mechanical Recycling: Giving New Life to Plastic Waste

et al. 2020

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“…14,15 For example, supercritical water was reported as the solvent to degrade epoxy resin or UPR; [16][17][18][19][20] numerous studies demonstrated that the decomposition of epoxy resin or UPR can be achieved in supercritical alcohols. [21][22][23][24][25] In the examples of acid digestion of resin, atmospheric conditions were normally applied but the separation was troublesome. 26,27 In addition to solvolysis, the degradation of UPR was reported by using strong oxidants such as hydrogen peroxide [28][29][30] and ionic liquid.…”

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confidence: 99%

Chemical recycling of unsaturated polyester resin and its composites via selective cleavage of the ester bond

et al. 2015

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“…The yield of depolymerization was 72.20% for two hours of reaction time at 80 °C. While Kamimura et al [25] were interested to the depolymerization of nylon-12 in supercritical Methanol in the presence of glycolic acid to ω-hydroxyalcanoic acids. The glycolic acid was used to enhance the chemoselectivity towards producing acid function.…”

Section: Introductionmentioning

confidence: 99%