MX167865B - ISOCYANATE COMPOSITION AND PROCESS TO MANUFACTURE FLEXIBLE FOAMS WITH THE SAME - Google Patents

ISOCYANATE COMPOSITION AND PROCESS TO MANUFACTURE FLEXIBLE FOAMS WITH THE SAME

Info

Publication number
MX167865B
MX167865B MX020264A MX2026490A MX167865B MX 167865 B MX167865 B MX 167865B MX 020264 A MX020264 A MX 020264A MX 2026490 A MX2026490 A MX 2026490A MX 167865 B MX167865 B MX 167865B
Authority
MX
Mexico
Prior art keywords
isocyanate
average
same
isocyanate composition
flexible foams
Prior art date
Application number
MX020264A
Other languages
Spanish (es)
Inventor
Louis Muller
Mireille De Witte
Arun Watts
Gabriel Verhelst
Tu Pham
Alain Parfondry
Original Assignee
Ici Plc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB898908490A external-priority patent/GB8908490D0/en
Application filed by Ici Plc filed Critical Ici Plc
Publication of MX167865B publication Critical patent/MX167865B/en

Links

Landscapes

  • Polyurethanes Or Polyureas (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

La presente invención se refiere a una composición líquida de un prepolímero que contiene isocianato que tiene una funcionalidad promedio de isocianato de más de 2 y un contenido de NCO de 2 a 12 por ciento por peso, obtenible mediante la reacción de un polímero reactivo de isocianato que tiene una funcionalidad nominal promedio de 2 a 4 y un peso equivalente promedio de aproximadamente 500 a aproximadamente 5000, con un exceso estequiométrico de una composición de difenilmetano diisocianato que contiene, cuando menos, 2 por ciento por peso de 2,4'-difenilmetano diisocianato y que tiene una funcionalidad de isocianato promedio en la escala de 2 a 2.3. Un método para preparar una espuma de poliuretano que comprende hacer reaccionar una composición de prepolímero.The present invention relates to a liquid composition of an isocyanate-containing prepolymer having an average isocyanate functionality of more than 2 and an NCO content of 2 to 12 weight percent, obtainable by reacting an isocyanate reactive polymer having an average nominal functionality of 2 to 4 and an average equivalent weight of about 500 to about 5000, with a stoichiometric excess of a diphenylmethane diisocyanate composition containing at least 2 percent by weight 2,4'-diphenylmethane diisocyanate and having an average isocyanate functionality on the scale of 2 to 2.3. A method of preparing a polyurethane foam comprising reacting a prepolymer composition.

MX020264A 1989-04-14 1990-04-10 ISOCYANATE COMPOSITION AND PROCESS TO MANUFACTURE FLEXIBLE FOAMS WITH THE SAME MX167865B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898908490A GB8908490D0 (en) 1989-04-14 1989-04-14 Prepolymers
GB909007535A GB9007535D0 (en) 1989-04-14 1990-04-03 Isocyanate composition and process for making flexible foams therefrom

Publications (1)

Publication Number Publication Date
MX167865B true MX167865B (en) 1993-04-19

Family

ID=26295219

Family Applications (1)

Application Number Title Priority Date Filing Date
MX020264A MX167865B (en) 1989-04-14 1990-04-10 ISOCYANATE COMPOSITION AND PROCESS TO MANUFACTURE FLEXIBLE FOAMS WITH THE SAME

Country Status (1)

Country Link
MX (1) MX167865B (en)

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