Научно-производственное объединение "Полимерсинтез"
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FIELD: machine building, ship building, aviation, building and other branches of industry. SUBSTANCE: method involves interaction polyisocyanate and hydroxyl-containing material, excess amount of polyisocyanate being used. Said process is carried out in the presence of frothing agent, stabilizing agent and catalyst. Said catalyst is chosen of group which contains carboxylate of quaternary ammonium base, carboxylate of alkali metal and tris-(1,3,5-dimethylaminopropyl)hexahydrotriazine. It is used together with 1-methyl-3-methylphospholene oxide at their mass ratio 93.0-99.75:7.0-0.25. Frothing and hardening are carried out at increased acidity of origin materials. EFFECT: improves efficiency of method. 2 tbl
SU4698884/05A1989-05-311989-05-31Method for production of isocyanurate-containing foam plastic
SU1811183A1
(en)
Process for the preparation of organic polyisocyanates containing biuret and/or urea groups, as well as dispersions of polyisocyanates containing urea groups in a diisocyanate free of urea
Method and apparatus for making moulded articles of solid or microcellular plastic material, in particular a free-flowing reactive mixture forming polyurethane of at least two free-flowing reaction components
Process for the production of polyisocyanate compositions containing urea and/or biuret groups, the polyisocyanate compositions obtained by this process, and their use for the production of plastics by the isocyanate polyaddition process
Liquid polyisocyanate mixtures containing urea groups, process for their preparation and their use for the preparation of compact or cellular polyurethane and/or polyisocyanurate synthetic resins, particularly flexible polyurethane foams
A process for the production of polyisocyanate preparations containing urea and/or biuret groups.the polyisocyanate preparations obtainable by this process and their use as isocyanate component in the production of plastics by the isocyanate-polyaddition process
Process for manufacturing especially thermoisolating foamy material by means of mixing head formed for processing at least two components and working at low pressure as well as for applying this material, the mixer for carrying out the process and the isolating material manufactured by this process