MX9605707A - Proceso para preparar espumas flexibles. - Google Patents
Proceso para preparar espumas flexibles.Info
- Publication number
- MX9605707A MX9605707A MX9605707A MX9605707A MX9605707A MX 9605707 A MX9605707 A MX 9605707A MX 9605707 A MX9605707 A MX 9605707A MX 9605707 A MX9605707 A MX 9605707A MX 9605707 A MX9605707 A MX 9605707A
- Authority
- MX
- Mexico
- Prior art keywords
- flexible foams
- preparing flexible
- weight
- parts
- polyisocyanate composition
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
- C08G18/4841—Polyethers containing oxyethylene units and other oxyalkylene units containing oxyethylene end groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0008—Foam properties flexible
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/0058—≥50 and <150kg/m3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
La presente invencion se refiere a un proceso para preparar una espuma flexible caracterizado porque comprende hacer reaccionar: I. Una composicion de poliisocianato, que tiene un valor de NCO de 10-25% por peso y que comprende: a) 70-90 partes por peso de un prepolímero isocianato que tiene un valor de NCO de 5-15% por peso preparado haciendo reaccionar una cantidad excesiva de un poliisocianato orgánico y un poliol que tiene un promedio nominal de funcionalidad hidroxilo de 2-3, un numero promedio de peso equivalente de 1000-3000 y un contenido de oxietileno de 5-25% por peso; b) 10-30 partes por peso de un poliisocianato que tiene un valor NCO de 30-33% por peso; y II. Una composicion de poliol en una cantidad de 30-150 partes por peso por 100 partes por peso de la composicion de poliisocianato anterior, la composicion de poliol comprende: a) de 70-90, partes por peso de un poliol de polioxietileno-polioxipropileno que tiene un promedio nominal de funcionalidad hidroxilo de 2-3, un numero promedio de peso equivalente de 1000-3000 y un contenido de oxietileno de 5-25% por peso; b) 5-25 partes por peso de un polieterpoliol que tiene un promedio nominal de funcionalidad hidroxilo de 2-8, un numero promedio de peso molecular de 200-3000 y un contenido de oxietileno de por lo menos 80% por peso en base al contenido total de oxialquileno; c) 2-8 partes por peso de agua; la cantidad de 2a), 2b), 2c) siendo juntas 100 partes por peso; y opcionalmente d) aditivos; a un índice de isocianato de 40-100.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9412105A GB9412105D0 (en) | 1994-06-16 | 1994-06-16 | Process for preparing flexible foams |
| GB9412105.0 | 1994-06-16 | ||
| EP94203786.2 | 1994-12-30 | ||
| EP94203786 | 1994-12-30 | ||
| PCT/EP1995/002069 WO1995034591A1 (en) | 1994-06-16 | 1995-05-31 | Process for preparing flexible foams |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MX9605707A true MX9605707A (es) | 1998-05-31 |
| MXPA96005707A MXPA96005707A (es) | 1998-10-23 |
Family
ID=
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MY112722A (en) | Process for preparing flexible foams | |
| CA2084807A1 (en) | Polyurethane foams | |
| GR3026276T3 (en) | Manufacture of polymeric foams | |
| MY113411A (en) | Process for making flexible foams | |
| HK1002143A1 (en) | Process for making flexible foams | |
| CA2337913A1 (en) | Process for preparing a flexible polyurethane foam | |
| NZ335216A (en) | Process for preparing rigid and flexible polyurethane foams by reacting polyisocyanate and polyether polyol | |
| NZ305870A (en) | New flexible polyurethane foams | |
| PL314492A1 (en) | Method of obtaining rigid polyurethane foams | |
| PL326779A1 (en) | Method of obtaining flexible soft foamed polyurethane materials | |
| MY132361A (en) | Process for preparing a flexible polyurethane foam | |
| AU4560300A (en) | Polymer-modified polyols, their use for the manufacture of polyurethane products | |
| TW262480B (en) | Process for making MDI based flexible foam | |
| CA2092577A1 (en) | Process for making flexible foams | |
| GB9601445D0 (en) | Adhesive | |
| TW360673B (en) | Polyurethane foams | |
| HUP0002900A2 (hu) | Izocianát kompozíciók duzzasztott poliuretánhabokhoz | |
| HUP9903034A2 (hu) | Eljárás kompakt felületű és cellás magú elasztikus poliuretán formatestek előállítására |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Grant or registration | ||
| MM | Annulment or lapse due to non-payment of fees |