GB822446A - A process for the production of sponges from polyurethanes - Google Patents
A process for the production of sponges from polyurethanesInfo
- Publication number
- GB822446A GB822446A GB2818756A GB2818756A GB822446A GB 822446 A GB822446 A GB 822446A GB 2818756 A GB2818756 A GB 2818756A GB 2818756 A GB2818756 A GB 2818756A GB 822446 A GB822446 A GB 822446A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dissolved
- foaming
- waste
- glycerine
- solvent
- 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
- 229920002635 polyurethane Polymers 0.000 title abstract 5
- 239000004814 polyurethane Substances 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 8
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 abstract 8
- 239000002699 waste material Substances 0.000 abstract 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 6
- 238000005187 foaming Methods 0.000 abstract 6
- 229920000728 polyester Polymers 0.000 abstract 6
- 239000001361 adipic acid Substances 0.000 abstract 4
- 235000011037 adipic acid Nutrition 0.000 abstract 4
- 150000001735 carboxylic acids Chemical class 0.000 abstract 4
- 125000005442 diisocyanate group Chemical group 0.000 abstract 4
- 150000002148 esters Chemical class 0.000 abstract 4
- 235000011187 glycerol Nutrition 0.000 abstract 4
- 239000002904 solvent Substances 0.000 abstract 4
- 150000003512 tertiary amines Chemical class 0.000 abstract 4
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 abstract 2
- 229920005830 Polyurethane Foam Polymers 0.000 abstract 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 238000009835 boiling Methods 0.000 abstract 2
- 239000007795 chemical reaction product Substances 0.000 abstract 2
- 239000006260 foam Substances 0.000 abstract 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 2
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 abstract 2
- 239000011496 polyurethane foam Substances 0.000 abstract 2
- 239000000047 product Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 229940058015 1,3-butylene glycol Drugs 0.000 abstract 1
- 235000019437 butane-1,3-diol Nutrition 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
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
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
- C08G18/1841—Catalysts containing secondary or tertiary amines or salts thereof having carbonyl groups which may be linked to one or more nitrogen or oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/18—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In a process for the production of polyurethane sponges by foaming one or more polyesters and one or more diisocyanates in the presence of water, the foaming takes place with the addition of waste polyurethane foam and one or more partially saponified esters which have been produced by reacting a tertiary amine containing one or more free hydroxyl groups with a monofunctional or polyfunctional carboxylic acid and partially saponifying the ester thus produced to form a product having an acid number of from 60 to 120. The waste foam may be subjected to preliminary treatment under heat and pressure, or by dissolving it in a solvent having a boiling point of at least 180 DEG C. and then distilling off the solvent. Alternatively, the waste polyurethane is dissolved in the polyester or diisocyanate before the foaming. In the accelerator the tertiary amine component may be N-diethylethanolamine or methyl diethanolamine and the carboxylic acid component can be acetic or adipic acid. In the examples the waste material for further use is (1) dissolved in the polyester reactant (an adipic acid/trimethylol propane/1,3-butylene glycol reaction product); (2) dissolved in glycerine at 230 DEG to 270 DEG C. and the glycerine is then distilled off; (3) is heated at 260 DEG to 270 DEG C. under pressure; (5) is thermally liquefied. Specification 805,561 is referred to.ALSO:In a process for the production of polyurethane sponges by foaming one or more polyesters and one or more diisocyanates in the presence of water, the foaming takes place with the addition of waste polyurethane foam and one or more partially saponified esters which have been produced by reacting a tertiary amine containing one or more free hydroxy groups with a monofunctional or polyfunctional carboxylic acid and partially saponifying the ester thus produced to form a product having an acid number of from 60 to 120. The waste foam may be subjected to preliminary treatment under heat and pressure, or by dissolving it in a solvent having a boiling point of at least 180 DEG C. and then distilling off the solvent. Alternatively the waste polyurethane is dissolved in the polyester or diisocyanate before the foaming. In the accelerator the tertiary amine component may be N-diethyl-ethanolamine or methyl diethanolamine and the carboxylic acid component may be acetic or adipic acid. In the examples the waste material is (1) dissolved in the polyester (an adipic acid/trimethylol propane/1 : 3-butylene glycol reaction product); (2) dissolved in glycerine at 230 DEG to 270 DEG C. and the glycerine is then distilled off; (3) is heated at 260 DEG to 270 DEG C. under pressure; (5) is thermally liquefied. Specification 805,561 [Group IV(a)], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK26927A DE1017783B (en) | 1955-09-22 | 1955-09-22 | Process for the production of sponges with improved properties from polyurethane foams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB822446A true GB822446A (en) | 1959-10-28 |
Family
ID=7217750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2818756A Expired GB822446A (en) | 1955-09-22 | 1956-09-14 | A process for the production of sponges from polyurethanes |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH362846A (en) |
| DE (1) | DE1017783B (en) |
| FR (1) | FR1156774A (en) |
| GB (1) | GB822446A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3109824A (en) * | 1960-11-14 | 1963-11-05 | Mobay Chemical Corp | Method of dissolving polyurethanes and polyureas using tall oil |
| US3117940A (en) * | 1960-11-14 | 1964-01-14 | Mobay Chemical Corp | Method of dissolving polyurethanes |
| US4451583A (en) * | 1982-01-26 | 1984-05-29 | Olin Corporation | Recycling of flexible polyurethane foam scrap |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE913474C (en) * | 1941-04-20 | 1954-06-14 | Bayer Ag | Process for the production of highly porous, solid or elastic plastic bodies |
| BE516512A (en) * | 1951-12-24 | |||
| DE926880C (en) * | 1952-01-30 | 1955-04-25 | Bayer Ag | Process for the production of foams with a very low specific weight |
| DE955993C (en) * | 1953-08-19 | 1957-01-10 | Bayer Ag | Process for the production of, in particular, elastic foams from linear or branched polyesters and diisocyanates in the presence of water |
-
1955
- 1955-09-22 DE DEK26927A patent/DE1017783B/en active Pending
-
1956
- 1956-09-14 GB GB2818756A patent/GB822446A/en not_active Expired
- 1956-09-17 FR FR1156774D patent/FR1156774A/en not_active Expired
- 1956-09-18 CH CH3755556A patent/CH362846A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3109824A (en) * | 1960-11-14 | 1963-11-05 | Mobay Chemical Corp | Method of dissolving polyurethanes and polyureas using tall oil |
| US3117940A (en) * | 1960-11-14 | 1964-01-14 | Mobay Chemical Corp | Method of dissolving polyurethanes |
| US4451583A (en) * | 1982-01-26 | 1984-05-29 | Olin Corporation | Recycling of flexible polyurethane foam scrap |
Also Published As
| Publication number | Publication date |
|---|---|
| CH362846A (en) | 1962-06-30 |
| DE1017783B (en) | 1957-10-17 |
| FR1156774A (en) | 1958-05-21 |
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