(57) by polymerizing the reaction product obtained and reacted with liquid ammonia was condensed SUMMARY maleic acid, fumaric acid or maleic anhydride, to produce a polymer having repeating succinyl units.バグナーパウルデベルトフランクグロトトルステンイエントゲンビンフリート...
The invention relates to a process for preparing polymers having repeating succinyl units, especially polysuccinimide and polyaspartic acid, with increased M.sub.W values at non-increased, moderate synthesis temperatures and at the same time without increased polycondensation times, using maleic anhydride...
The production of polymers with repeating succinyl units (I) comprises (i) reacting an unsaturated 4C dicarboxylic acid or its derivative (A) with a nitrogen-supplying compound (B) to give a mixture containing low-molecular weight reaction product(s) and/or prepolymer(s) of (A) and (B), ...
rights reserved 0032-3896/13 www.nature.com/pj Molecular-recognition-directed formation of supramolecular polymers Takeharu Haino In recent years, significant research effort has focused on creating supramolecular polymers that can be attained by specific host–guest interactions of the repeating units. ...
The polymers are characterized by the fact that no ring structures are present along the main chain between tertiary amino-groups of different units. The results indicate the monomeric units of this new family of poly(amido-amines) behave independently towards both protonation and complex formation....
You will notice some "fuzziness" in the way that the polyethylene structures are represented above. The squiggly lines at the ends of the long structure indicate that the same pattern extends indefinitely. The more compact notation on the right shows the minimal repeating unit enclosed in brackets...
Fibre-reinforced polymer (FRP), also Fibre-reinforced plastic, is a composite material made of a polymer matrix reinforced with fibres. The fibres are usually glass, carbon, or aramid, although other fibres such as paper or wood or asbestos have been sometimes used. The polymer is usually an...
Akihiro Tagaya and Yasuhiro Koike We demonstrated that a method based on the analysis of both orientational birefringence (intrinsic birefringence) and photoelastic birefringence (photoelastic coefficient) is effective for designing polymers that are processed in a molten state and used in a glassy state...
A polymer is a material that has a large molecular structure composed entirely of rings or chains of many distinctive repeating units (monomers). To simplify the meaning of polymers, one can refer to the origin of the word in Greek: words “poly” and “mer” which mean “many” and “...
repeating units of GAGs are often fused forming a bifunctional enzyme termed a synthase. A variety of GAG synthases have been discovered with distinct primary sequences, topological architectures, and catalytic properties4. In the past, we have found that the two synthases of the Gram-negative ...