METHOD OF PRODUCING SOFT TO SEMI-RIGID POLYURETHANE INTEGRAL FOAMED PLASTICS Russian patent published in 2005 - IPC

Abstract RU 2263687 C2

FIELD: polymer production.

SUBSTANCE: invention relates to foamed polyurethane molded products with thickened edge zone with simplified density and clearly expressed more soft cellular core. Soft to semi-rigid polyurethane integral foamed plastics are prepared by interaction of (i) organic and/or modified organic polyisocyanates or their polymeric precursors with (ii) at least one polyol component with hydroxyl number 20 to 200 and functionality 2 to 6, if necessary in combination with (iii) at least one polyol component with hydroxyl number 201 to 899 and functionality 2 to 3, and also (iv) at least one component functioning as chain extension and having hydroxyl number or amine number 600 to 1850 and functionality 2 to 4 in amount 3 to 20% based on the summary weight of (ii) and (iii), and, if necessary, (v) known additives, activators, and/or stabilizers in presence of 0.05-0.6% water (based on summary weight of (ii) and (iii)) and mixtures of pore agents containing 1,1,1,3,3-pentafluorobutane and at least one other fluoroalkane in amount 0.2-10% of the summary weight of components (ii)-(v). Thus obtained foamed plastics with integral structure are characterized by Shore hardness of edge zone 30 to 90, rigidity in compression deformation 30 and 350 kPa, and apparent density 150 to 900 kg/m3.

EFFECT: increased assortment of foamed plastics.

7 cl, 1 tbl, 9 ex

Similar patents RU2263687C2

Title Year Author Number
PROCESS OF PRODUCING POLYURETHANE INTEGRAL FOAMS 2001
  • Moroni Dzhankarlo
  • Madzhetti Franko
RU2284336C2
FLUORO-HYDROCARBON COMPOSITIONS 2004
  • Tsipfel' Lotar
  • Krjukke Verner
  • Berner Karsten
  • Durnel' P'Er
  • Rekke Dirk-Ingol'F
RU2395539C2
NATURAL OIL-BASED POLYOLS WITH INHERENT SURFACE-ACTIVE PROPERTIES FOR FOAMING POLYURETHANES 2007
  • Sonne Zhan-Mari
  • Kasati Fransua M.
RU2435793C2
PROCESS FOR PRODUCING RIGID POLYURETHANE FOAMS 2012
  • Tomovich Zhelko
  • Jakobmajer Olaf
  • Kampf Gunnar
RU2601755C2
FOAMED POLYURETHANES WITH IMPROVED FATIGUE STRENGTH DURING REPEATED BENDING 2008
  • Momajer Nil'S
  • Frajdank Daniel'
  • Sheps Sibille
  • Ehmge Andreas
  • Leffler Akhim
  • Ortalda Marko
RU2487899C2
STABLE IN STORAGE POLYOL COMPOSITIONS FOR OBTAINING RIGID POLYISOCYANURATE FOAM 2010
  • Golini Paolo
  • Pin'Jan'Oli Francheska
RU2527956C2
POLYURETHANE AND POLYISOCYANURATE FOAM PLASTICS 2011
  • Pellakani Luidzhi
  • Golini Paolo
  • Keller Peter
RU2575124C2
METHOD OF OBTAINING HARD FOAM POLYURETHANES 2010
  • Tomovich Zel'Ko
  • Jakobmajer Olaf
  • Khenzik Rajner
  • Kampf Gunnar
RU2525240C2
METHOD OF MANUFACTURING MOLDED CELLULAR POLYURETHANE PRODUCTS 1994
  • Gans Veber
  • Peter Khaas
  • Ehrkhard Mikhel'S
  • Kristian Veber
  • Klaus Brekht
RU2138523C1
HYBRID POLYESTER-POLYETHER POLYOLS FOR IMPROVED DEMOLD EXPANSION IN POLYURETHANE RIGID FOAMS 2012
  • Khimenes Khorkhe
  • Shutov Pavel L.
  • Felsted Uillyam N., Ii
  • Rouz Melissa M.
  • Mikeletti Devid
RU2609019C2

RU 2 263 687 C2

Authors

Ajzen Norbert

Zajdlitts Daniehl'

Dates

2005-11-10Published

2000-12-04Filed