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Wednesday, July 8, 2020 | History

3 edition of Foam based on reactive oligomers found in the catalog.

Foam based on reactive oligomers

AlК№fred Anisimovich Berlin

Foam based on reactive oligomers

by AlК№fred Anisimovich Berlin

  • 148 Want to read
  • 22 Currently reading

Published by Technomic Pub. in Westport, Conn .
Written in English

    Subjects:
  • Plastic foams.,
  • Oligomers.

  • Edition Notes

    Statementby A.A. Berlin, F.A. Shutov and A.K. Zhitinkina ; translated by Alec Odinak.
    ContributionsShutov, Fedor Anatolʹevich., Zhitinkina, A. K., Odinak, Alec.
    Classifications
    LC ClassificationsTP1183.F6 B4713 1982
    The Physical Object
    Pagination301 p. :
    Number of Pages301
    ID Numbers
    Open LibraryOL3514057M
    ISBN 100877623074
    LC Control Number82080968

    Four layers of comfort materials: 2” Reactive foam, 2” Contouring memory foam, 2” Supportive transition foam, 4” High density support foam. Soft touch polyester blend mattress encasement for an elegant and luxurious feel under your bed s:   1. Substantially water blown "flexible polyurethane foam" based on methylene diphenyl isocyanates and isocyanate reactive compounds selected from polyols and polyamines, having a density ranging from 15 kg/m 3 to less than 25 kg/m 3. 2. Flexible polyurethane foam according to claim 1 obtained by a one shot process. 3.

      The foam density for insulation applications is typically kept between 30 and 45 g L −1 and using conventional high‐pressure foam making techniques, cell sizes as low as µm can be obtained. Consequently, the thermal conductivity contribution by the foamed polymer is typically in the range of and W (m K) −1. In order to reduce the effects of hydrolytic degradation and to maintain sufficient viscosity during processing of biomass based poly(l-lactic acid) (PLLA), various epoxy functional reactive oligomers have been characterized and incorporated into the degraded fragments as chain extenders. The molecular weight of PLLA increased with the increase in functionality of the reactive oligomers.

    Article by Derek Li, Jacob Brady, Ryan Eiler, Sally Reiley, Michael Ellenberger, Peter Stuart, Jeff Beck and Sam Winebaum Saucony Endor. Splatterburst Targets - 8 inch Stick & Splatter Reactive Self Adhesive Shooting Targets - Gun - Rifle - Pistol - Airsoft - BB Gun - Pellet Gun - Air Rifle out of .


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Foam based on reactive oligomers by AlК№fred Anisimovich Berlin Download PDF EPUB FB2

ISBN: OCLC Number: Notes: Translation of: Penopolimery na osnove reakt︠s︡ionnosposobnykh oligomerov / A.A. Berlin, F.A. Shutov. Special attention is given to the discussion of the author's findings concerning the morphology of foamed plastics based on reactive oligomers such as polyurethane, phenolic and urea-formaldehyde by: Special attention is given to the discussion of the author's findings concerning the morphology of foamed plastics based on reactive oligomers such as polyurethane, phenolic and urea-formaldehyde.

"Technical properties of plastics: strength and durability, heat and frost resistance, chemical resistance" and "Foam based on reactive oligomers" - such books were discovered by investigators in the room where the buckets and vacuum bags with red caviar.

Synthesis of new liquid crystalline polyester reactive oligomers for foaming. Four or five monomers were used to build curable liquid crystalline (LC) oligomers [,, ], however they could not prepare high performance polymer foams due to high melt viscosity and high crystal-to-nematic transition temperature (T K−N).Author: Yanfu Tang, Li Yuan, Guozheng Liang, Aijuan Gu.

Oligomers can be grouped into addition oligomers and condensation oligomers, based on the structure of the repeating unit. Step Foam based on reactive oligomers book polymerization occurs one step at a time through a series of simple organic reactions, such as carbonyl addition–elimination reactions used for the preparation of polyesters and polyamides, or addition to.

Nofia® OL and Nofia OL Oligomers are low molecular weight, reactive flame retardant additives. The oligomers are phosphorus based additives with phenolic end groups suitable for flame retarding thermoset resins, such as unsaturated polyesters, epoxy.

A reactive phosphorus-containing polyol incorporated into flexible polyurethane foam: Self-extinguishing behavior and mechanism. Polymer Degradation and Stability, DOI: /egradstab Ram K Gupta, M Ionescu, X Wan, D Radojcic, N Bilic.

Petroleum-based polyurethane is widely used in geotechnical application but nowadays the cost is getting more expensive due to high depleting rate and high production cost. Instead of using petroleum-based PU, this study is focusing on performance of palm kernel oil-based PU as an alternative method for ground improvement.

Abstract. Integral PUR foams are manufactured using the same raw materials as those used for non-integral PUR foams, viz., hydroxyl-bearing oligomers, usually oligoethers or oligoesters, and di- or polyisocyanates, with tertiary amines, organometallic compounds and metal salts as catalysts, together with surfactants and foaming agents.

A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Urethane-based multiene monomers were synthesized and photopolymerized with a trifunctional thiol monomer to form highly cross-linked thiol−ene networks.

Real-time FTIR was used to monitor the conversion of thiol and urethane ene monomers as a function of irradiation time. For stoichiometric thiol−urethane ene photopolymerizations, monomers reacted in a molar.

A polyurethane foam (PUF) sponge was mounted in a cassette sampler and evaluated as a sorbent for the collection of hexamethylene diisocyanate (HDI) monomer and HDI-based oligomers.

Recovery studies indicated ± 34% average recovery of HDI monomer and 92 ± 9% and 97 ± 25% average recovery of HDI-based oligomers. Phosphazene-containing epoxy-resorcinol oligomers (PERO) are synthesized in one stage with the direct interaction of hexachlorocyclotriphosphazene (HCP), resorcinol, and epichlorohydrin in the presence of solid NaOH.

Depending on the initial ratio of HCP:resorcinol, PERO contains from 20 to 50 wt.% phosphazene component (–% of phosphorus) and have an epoxy group. Residues of sugar, unreacted base and curing agents, low molecular weight oligomers may be introduced in the foam which then lead to a continuous mass loss of the foam during the deposition of various decorating agents by drop-casting from hexane or ethanol.

We propose two solvents as cleaning agents: hexane and ethanol. Nofia Reactive Oligomers Nofia® OL and Nofia OL Oligomers are low molecular weight, reactive flame retardant additives.

The oligomers are phosphorus based additives with phenolic end groups suitable for flame retarding thermoset resins, such as unsaturated polyesters, epoxy, polyurethane and polyurea. Non reactive oligomers can be good FRs for fogging behavior in the automotive foams, either in gravimetric or photometric methods.

[Ref. oligomer 1 (experimental) and oligomer 2 (Fyrol 99)]. Reactive oligomers should also give good fogging behavior in both methods. [Ref. oligomer 2 - reactive analog of oligomer 1]. The Silmer line of reactive silicones consists of both multifunctional and linear-difunctional silicone pre-polymers with reactive terminal end groups.

The silicones can be co-reacted into various polymers for coatings, plastics, resins, and other applications to incorporate silicone moiety into a polymer structure. A synthesis model based on chemical reaction is shown in Figure 1.

By reacting a resin containing an organic group W with a groups, as well as oligomers which contain reactive organic groups. This generally involves a reaction with a hydroxyl group-containing resin in the presence of a catalyst.

o Rigid foam o Flexible slabstock, visco-elastic and Molded Foams o Coatings, adhesives sealants, elastomers and binders - Types of isocyanate chemistry based rigid foams: o PU Foams o PIR Foams o Modified PIR foams o Reactive and non-reactive o One or two component, How to formulate an adhesive.

The batch foam method is very sensitive to the temperature during foaming, as shown by Chen et al. Foaming PLA modified with an epoxy-based CE at a temperature of °C resulted in a foam with kg/m 3 and a small cell size of 4 µm, while, at °C, foams with a density of 27 kg/m 3 and very large cells of µm were obtained.

This.Polyurethanes are made by the exothermic reactions between alcohols with two or more reactive hydroxyl (-OH) groups per molecule (diols, triols, polyols) and isocyanates that have more than one reactive isocyanate group (-NCO) per molecule (diisocyanates, polyisocyanates). For example a diisocyanate reacts with a diol.

Get this from a library! Reactive oligomers: based on a symposium sponsored by the Divisions of Polymer Chemistry and Polymeric Materials Science and Engineering at the th Meeting of the American Chemical Society, St.

Louis, Missouri, April[Frank Wayne Harris; Harry J Spinelli; American Chemical Society. Division of Polymer Chemistry.