Polyureas

Chiriac, C. I.; Tanasă, Fulga

doi:10.1002/14356007.d21_d01

Cited by 5 publications

(4 citation statements)

References 94 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the reactions of diamines with functional carbonyl compounds like phosgene, triphosgene, urea, dimethylcarbonate, carbon dioxide, or carbonyl sulfide yield polyureas (Scheme b). Mitsui Toatsu Chemical commercialized fibers based on nonamethylenediamine and urea . However, for today’s practical applications as foams, fibers, and elastomers, mainly aromatic polyureas and copolymers (e.g., polyurethaneureas) are used.…”

Section: Long-chain Aliphatic Polymersmentioning

confidence: 99%

Long-Chain Aliphatic Polymers To Bridge the Gap between Semicrystalline Polyolefins and Traditional Polycondensates

2016

View full text Add to dashboard Cite

Other than their established short-chain congeners, polycondensates based on long-chain difunctional monomers are often dominated by the long methylene sequences of the repeat units in their solid-state structures and properties. This places them between traditional polycondensates and polyethylenes. The availability of long-chain monomers as a key prerequisite has benefited much from advances in the catalytic conversion of plant oils, via biotechnological and purely chemical approaches, likewise. This has promoted studies of, among others, applications-relevant properties. A comprehensive account is given of long-chain monomer syntheses and the preparation and physical properties, morphologies, mechanical behavior, and degradability of long-chain polyester, polyamides, polyurethanes, polyureas, polyacetals, and polycarbonates.

show abstract

Section: Long-chain Aliphatic Polymersmentioning

confidence: 99%

Long-Chain Aliphatic Polymers To Bridge the Gap between Semicrystalline Polyolefins and Traditional Polycondensates

2016

View full text Add to dashboard Cite

show abstract

“…Hence, most industrial polyurea systems are generated in situ by a twocomponent approach using isocyanates in combination with water and/or amines. [ 1 ] Nevertheless, linear polyurea by the self-condensation of AB 2 -type building blocks. Prominent examples include hyperbranched polyesters based on dimethylolpropionic acid, [ 3 ] which were commercialized by Perstorp Holding AB under the tradename "Boltorn", and hyperbranched polyamides based on L-lysine.…”

Section: Introductionmentioning

confidence: 99%

Dendritic Polyurea Polymers

Tuerp

Bruchmann²

2014

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Dendritic polymers, subsuming dendrimers as well as hyperbranched or highly branched polymers are well established in the field of polymer chemistry. This review article focuses on urea based dendritic polymers and summarizes their synthetic routes through both isocyanate and isocyanate-free processes. Furthermore, this article highlights applications where dendritic polyureas show their specific chemical and physical potential. For these purposes scientific publications as well as patent literature are investigated to generate a comprehensive overview on this topic.

show abstract

“…The motivation to use polyurea as a chemical backbone capable of binding and releasing antimicrobial agents was derived from its use as a commodity as a coating material for metal and concrete surfaces. Indeed, its low cost, high melting temperature (>200 °C), thermal stability, lack of solubility in nearly any common solvent, and low water absorption contributed to an estimated 133 kiloton global consumption of polyurea in 2018 . Furthermore, the use of polyurea in agricultural applications is possible due to its proven degradability in soil .…”

Section: Discussionmentioning

confidence: 99%

Antiviral Polymers Based on N-Halamine Polyurea

Steinman

Dombrovsky

et al. 2021

Biomacromolecules

View full text Add to dashboard Cite

N-halamines are a commonly applied class of antimicrobial agents used for a variety of applications relating to human health. Here, we present the modulation of the common polymers polyurea and polyguanidine with the N-halamine technology. The N–H bonds in either polymer were converted to N–Cl or N–Br bonds capable of releasing Cl+ or Br+ cations to aqueous media as antiviral agents. Controlled release of the oxidizing agents was monitored for a period of 4 weeks. Antiviral activity was evaluated against the T4 bacteriophage as well as against the highly stable plant virus belonging to the Tobamovirus genus, tomato brown rugose fruit virus. The incorporation of the N-halamine technology on commonly used polymers has effectively introduced antiviral functionality for a wide variety of potential applications.

show abstract

Polyureas

Abstract: The article contains sections titled: 1. Introduction 2. Synthesis … Show more

Cited by 5 publications

References 94 publications

Long-Chain Aliphatic Polymers To Bridge the Gap between Semicrystalline Polyolefins and Traditional Polycondensates

Long-Chain Aliphatic Polymers To Bridge the Gap between Semicrystalline Polyolefins and Traditional Polycondensates

Dendritic Polyurea Polymers

Antiviral Polymers Based on N-Halamine Polyurea

Contact Info

Product

Resources

About