ES357739A2 - A PROCEDURE FOR PREPARING A URETHANE COMPOSITION. - Google Patents
A PROCEDURE FOR PREPARING A URETHANE COMPOSITION.Info
- Publication number
- ES357739A2 ES357739A2 ES357739A ES357739A ES357739A2 ES 357739 A2 ES357739 A2 ES 357739A2 ES 357739 A ES357739 A ES 357739A ES 357739 A ES357739 A ES 357739A ES 357739 A2 ES357739 A2 ES 357739A2
- Authority
- ES
- Spain
- Prior art keywords
- period
- cellular product
- partially cured
- approximately
- comprised
- 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
Links
Landscapes
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Improvements introduced in the object of the main patent no. 344,187, requested on august 17, 1967, for: "a process for preparing a urethane composition", composition that takes the form of a flexible, densified polyurethane foam, characterized by: a) placing a polyurethane-forming reaction mixture in a reaction zone and allowing the mixture to rise, thereby forming a partially cured cellular product; b) applying a compression force to the cellular product, partially cured, after a period of time between approximately 0 and 10 minutes after finishing the rise, to c) reduce the volume of the partially cured cellular product to 2/3 1/10 approximately of its original volume; and d) suppressing the compressive force and finishing the curing of the compressed cellular product; with the proviso that: when the period of time elapsed from the end of the rise to the application of the compressive force, is between 0 and 2.5 minutes, approximately, the cellular product, partially cured, is maintained at a medium temperature comprised between about 7º and about 204ºc, during said period; when said period of time is comprised between 2.5 and 5 minutes, approximately, the cellular product, partially cured, is maintained at a temperature of the medium comprised between about 7º and about 93ºC during said period; 7 when said period of time is comprised between 5 and 10 minutes approximately, the cellular product, partially cured, is maintained at a temperature of the medium comprised between about 7º and about 43º c, during said period. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57318966A | 1966-08-18 | 1966-08-18 | |
| US66175667A | 1967-08-04 | 1967-08-04 | |
| ES344187A ES344187A1 (en) | 1966-08-18 | 1967-08-17 | A PROCEDURE FOR PREPARING A URETHANE COMPOSITION. |
| US70852468A | 1968-02-27 | 1968-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES357739A2 true ES357739A2 (en) | 1970-12-01 |
Family
ID=56078259
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES344187A Expired ES344187A1 (en) | 1966-08-18 | 1967-08-17 | A PROCEDURE FOR PREPARING A URETHANE COMPOSITION. |
| ES357739A Expired ES357739A2 (en) | 1966-08-18 | 1968-08-31 | A PROCEDURE FOR PREPARING A URETHANE COMPOSITION. |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES344187A Expired ES344187A1 (en) | 1966-08-18 | 1967-08-17 | A PROCEDURE FOR PREPARING A URETHANE COMPOSITION. |
Country Status (1)
| Country | Link |
|---|---|
| ES (2) | ES344187A1 (en) |
-
1967
- 1967-08-17 ES ES344187A patent/ES344187A1/en not_active Expired
-
1968
- 1968-08-31 ES ES357739A patent/ES357739A2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES344187A1 (en) | 1969-04-16 |
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