ES2128993B1 - PROCEDURE FOR THE MANUFACTURE OF LATEX-POLYURETHANE FOAMS. - Google Patents
PROCEDURE FOR THE MANUFACTURE OF LATEX-POLYURETHANE FOAMS.Info
- Publication number
- ES2128993B1 ES2128993B1 ES9701161A ES9701161A ES2128993B1 ES 2128993 B1 ES2128993 B1 ES 2128993B1 ES 9701161 A ES9701161 A ES 9701161A ES 9701161 A ES9701161 A ES 9701161A ES 2128993 B1 ES2128993 B1 ES 2128993B1
- Authority
- ES
- Spain
- Prior art keywords
- latex
- manufacture
- procedure
- polyurethane foams
- water content
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Landscapes
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Procedimiento ppara la fabricación de espumas de látex-poliuretano. El procedimiento comprende una etapa previa de retirada parcial o total del agua contenida en un látice comercial (con un contenido en agua típico del 65% en peso), antes de su adición a la mezcla de reacción, ppara reducir el contenido en agua del látice hasta el nivel deseado, mediante un sistema de desecación que comprende un material capaz de retirar agua o humedad del látice, tal como gel de sílice. El látice se mezcla, entonces, con los precursores del poliuretano, que comprenden un compuesto polihidroxilado y un poliisocianato, y finalmente se forma la espuma mediante la incorporación de un espumante. Modificando el contenido en agua del látice se pueden obtener espumas de látex-poliuretano tanto de alta como de baja densidad y con un contenido en látex ampliamente variable. Estas espumas son adecuadas para la fabricación de colchones.Procedure for the manufacture of latex-polyurethane foams. The procedure comprises a previous step of partially or totally removing the water contained in a commercial latex (with a typical water content of 65% by weight), before adding it to the reaction mixture, to reduce the water content of the latex. to the desired level, by means of a drying system comprising a material capable of removing water or moisture from the latex, such as silica gel. The latex is then mixed with the polyurethane precursors, which comprise a polyhydroxy compound and a polyisocyanate, and finally the foam is formed by incorporating a foaming agent. By modifying the water content of the latex, both high and low density latex-polyurethane foams can be obtained with a widely variable latex content. These foams are suitable for the manufacture of mattresses.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9701161A ES2128993B1 (en) | 1997-05-28 | 1997-05-28 | PROCEDURE FOR THE MANUFACTURE OF LATEX-POLYURETHANE FOAMS. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9701161A ES2128993B1 (en) | 1997-05-28 | 1997-05-28 | PROCEDURE FOR THE MANUFACTURE OF LATEX-POLYURETHANE FOAMS. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2128993A1 ES2128993A1 (en) | 1999-05-16 |
ES2128993B1 true ES2128993B1 (en) | 2000-01-01 |
Family
ID=8299483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9701161A Expired - Fee Related ES2128993B1 (en) | 1997-05-28 | 1997-05-28 | PROCEDURE FOR THE MANUFACTURE OF LATEX-POLYURETHANE FOAMS. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2128993B1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL42763C (en) * | 1934-12-05 | |||
US2877212A (en) * | 1954-10-11 | 1959-03-10 | Du Pont | Polyurethanes from difunctional polymers of conjugated dienes |
BE625005A (en) * | 1961-12-02 |
-
1997
- 1997-05-28 ES ES9701161A patent/ES2128993B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2128993A1 (en) | 1999-05-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC2A | Transfer of patent | ||
EC2A | Search report published |
Date of ref document: 19990516 Kind code of ref document: A1 Effective date: 19990516 |
|
FD2A | Announcement of lapse in spain |
Effective date: 20170904 |