DE2632007C2 - Verfahren zur Herstellung eines biologisch abbaubaren vernetzten Polyurethanschaums - Google Patents
Verfahren zur Herstellung eines biologisch abbaubaren vernetzten PolyurethanschaumsInfo
- Publication number
- DE2632007C2 DE2632007C2 DE2632007A DE2632007A DE2632007C2 DE 2632007 C2 DE2632007 C2 DE 2632007C2 DE 2632007 A DE2632007 A DE 2632007A DE 2632007 A DE2632007 A DE 2632007A DE 2632007 C2 DE2632007 C2 DE 2632007C2
- Authority
- DE
- Germany
- Prior art keywords
- water
- foam
- reaction product
- polyurethane foam
- isocyanate groups
- 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
- 229920005830 Polyurethane Foam Polymers 0.000 title claims description 22
- 239000011496 polyurethane foam Substances 0.000 title claims description 22
- 238000000034 method Methods 0.000 title claims description 11
- 230000008569 process Effects 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 239000007795 chemical reaction product Substances 0.000 claims description 19
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 14
- 239000005056 polyisocyanate Substances 0.000 claims description 10
- 229920001228 polyisocyanate Polymers 0.000 claims description 10
- -1 polyoxyethylene Polymers 0.000 claims description 9
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229920005862 polyol Polymers 0.000 claims description 8
- 150000003077 polyols Chemical class 0.000 claims description 8
- FIYJDZQCMUMAHA-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;2-hydroxypropanoic acid Chemical compound CC(O)C(O)=O.CC(O)C(O)=O.CC(O)C(O)=O.CCC(CO)(CO)CO FIYJDZQCMUMAHA-UHFFFAOYSA-N 0.000 claims description 7
- BVUHVSRMIFGKSK-UHFFFAOYSA-N OCC(O)=O.OCC(O)=O.OCC(O)=O.CCC(CO)(CO)CO Chemical compound OCC(O)=O.OCC(O)=O.OCC(O)=O.CCC(CO)(CO)CO BVUHVSRMIFGKSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 description 34
- 102000004190 Enzymes Human genes 0.000 description 6
- 108090000790 Enzymes Proteins 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005187 foaming Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 241000243142 Porifera Species 0.000 description 4
- 210000001124 body fluid Anatomy 0.000 description 4
- 239000010839 body fluid Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 125000005442 diisocyanate group Chemical group 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229920005906 polyester polyol Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000002599 biostatic effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- HNRMPXKDFBEGFZ-UHFFFAOYSA-N ethyl trimethyl methane Natural products CCC(C)(C)C HNRMPXKDFBEGFZ-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 1
- ZTNJGMFHJYGMDR-UHFFFAOYSA-N 1,2-diisocyanatoethane Chemical compound O=C=NCCN=C=O ZTNJGMFHJYGMDR-UHFFFAOYSA-N 0.000 description 1
- IKYNWXNXXHWHLL-UHFFFAOYSA-N 1,3-diisocyanatopropane Chemical compound O=C=NCCCN=C=O IKYNWXNXXHWHLL-UHFFFAOYSA-N 0.000 description 1
- DFZADDZAPJAOOG-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;2-hydroxyacetic acid Chemical compound OCC(O)=O.CCC(CO)(CO)CO DFZADDZAPJAOOG-UHFFFAOYSA-N 0.000 description 1
- WZROBDLGELURGW-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;2-hydroxypropanoic acid Chemical compound CC(O)C(O)=O.CCC(CO)(CO)CO WZROBDLGELURGW-UHFFFAOYSA-N 0.000 description 1
- VAYMIYBJLRRIFR-UHFFFAOYSA-N 2-tolyl isocyanate Chemical compound CC1=CC=CC=C1N=C=O VAYMIYBJLRRIFR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 108010003272 Hyaluronate lyase Proteins 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004365 Protease Substances 0.000 description 1
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 1
- 241001346815 Spongia officinalis Species 0.000 description 1
- 102000005158 Subtilisins Human genes 0.000 description 1
- 108010056079 Subtilisins Proteins 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 102000004142 Trypsin Human genes 0.000 description 1
- 108090000631 Trypsin Proteins 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 150000001414 amino alcohols Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000006849 chlorophenylene group Chemical group 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- JXCHMDATRWUOAP-UHFFFAOYSA-N diisocyanatomethylbenzene Chemical compound O=C=NC(N=C=O)C1=CC=CC=C1 JXCHMDATRWUOAP-UHFFFAOYSA-N 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 239000011363 dried mixture Substances 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 229960004275 glycolic acid Drugs 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- DGTNSSLYPYDJGL-UHFFFAOYSA-N phenyl isocyanate Chemical compound O=C=NC1=CC=CC=C1 DGTNSSLYPYDJGL-UHFFFAOYSA-N 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002797 proteolythic effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 125000005628 tolylene group Chemical group 0.000 description 1
- 239000012588 trypsin Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/425—Porous materials, e.g. foams or sponges
-
- 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3221—Polyhydroxy compounds hydroxylated esters of carboxylic acids other than higher fatty acids
-
- 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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/4283—Hydroxycarboxylic acid or ester
-
- 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
- C08G18/4887—Polyethers containing carboxylic ester groups derived from carboxylic acids other than acids of higher fatty oils or other than resin acids
-
- 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
- C08G18/4891—Polyethers modified with higher fatty oils or their acids or by resin acids
-
- 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
-
- 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
- C08G2230/00—Compositions for preparing biodegradable polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- Dispersion Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Polyurethanes Or Polyureas (AREA)
- Biological Depolymerization Polymers (AREA)
- Materials For Medical Uses (AREA)
Description
wassermdex - Aquivalent NCO x 100
4,4'-Methylen-bis-(phenylisocyanat),
4,4'-Sulfonyi-bis-(phenylisocyanat),
4,4'-Methylen-bis-(o-toluylisocyanat),
Ethylendiisocyanat und Trimethylendiisocyanat.
keine Veränderung.
drei Monau in einen Komposthaufen eingearbeitet. Bei
der Entfernung aus dem Komposthaufen hatte der 40
Schaum begonnen, auseinanderzubrechen. Er konnte
nicht gewaschen werden, ohne auseinanderzufallen.
dann mit einem Schaum verglichen, der in gleicher Weise mit Trünethylofpropan anstelle /on Trimethylolpro- 45
pantrilactat hergestellt worden war. Der Schaum auf
Trimethylolpropanlactatbasis wurde nach 10 Minuten
bei 121° C klebrig und begann sich zu zersetzen. Der
Schaum auf Trimethylcspropanbasis zeigte nach 20 Minuten bei 121 ° C keine Veränderung. 50
Schaum auf der Basis von Trimethylolpropantrilactat
nach 240 Minuten zu einem Auseinanderbrechen in viskose Klumpen, wobei der Schaum nach 30 Minuten 55
klebrig geworden war. Der Schaum auf der Basis von
Trimethylolpropan zeigte nach 240 Minuten bei 100°C
keine Veränderung.
Dann ließ man den gebildeten Schaum eine Woche mit
synthetischem Faulschlamm reagieren. Der Schaum auf 65
Trimethylolpropantrilüi.'iatbasis hatte sich vollständig
aufgelöst, während der Standard-Polyurelhanschaum
noch intakt war.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59725875A | 1975-07-18 | 1975-07-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2632007A1 DE2632007A1 (de) | 1977-02-03 |
| DE2632007C2 true DE2632007C2 (de) | 1986-03-13 |
Family
ID=24390760
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2632007A Expired DE2632007C2 (de) | 1975-07-18 | 1976-07-16 | Verfahren zur Herstellung eines biologisch abbaubaren vernetzten Polyurethanschaums |
| DE2660694A Expired DE2660694C2 (de) | 1975-07-18 | 1976-07-16 | Umsetzungsprodukt mit endständigen Isocyanatgruppen |
| DE2660695A Expired DE2660695C2 (de) | 1975-07-18 | 1976-07-16 |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2660694A Expired DE2660694C2 (de) | 1975-07-18 | 1976-07-16 | Umsetzungsprodukt mit endständigen Isocyanatgruppen |
| DE2660695A Expired DE2660695C2 (de) | 1975-07-18 | 1976-07-16 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS6016450B2 (de) |
| CA (1) | CA1087800A (de) |
| DE (3) | DE2632007C2 (de) |
| FR (1) | FR2318183A1 (de) |
| GB (1) | GB1517826A (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1605082A (en) * | 1977-06-27 | 1981-12-16 | Vorhauer Lab | Sponge-like structure |
| JPS6374675A (ja) * | 1986-09-18 | 1988-04-05 | Hitachi Electronics Eng Co Ltd | プリンタ用紙巻取り機構 |
| DE19615356A1 (de) * | 1996-04-18 | 1997-10-23 | Bayer Ag | Kompostierbare und thermoplastisch verarbeitbare Schaumstoffe |
| CN108355162B (zh) * | 2018-05-14 | 2021-07-23 | 江西省科学院应用化学研究所 | 一种抗菌亲水性聚氨酯泡沫医用敷料 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE950240C (de) * | 1952-12-16 | 1956-10-04 | Bayer Ag | Verfahren zur Herstellung hochmolekularer linearer Polyester |
| US3809088A (en) * | 1972-07-17 | 1974-05-07 | Procter & Gamble | Hydrolytically unstable polyurethane cotamenial devices |
| US3778390A (en) * | 1972-07-17 | 1973-12-11 | Procter & Gamble | Hydrolytically unstable polyurethane foams |
| DE2456813A1 (de) * | 1974-11-30 | 1976-06-10 | Freudenberg Carl Fa | Hydrophiler schaumstoff auf polyurethanbasis |
-
1976
- 1976-03-03 CA CA247,028A patent/CA1087800A/en not_active Expired
- 1976-05-12 JP JP51053392A patent/JPS6016450B2/ja not_active Expired
- 1976-07-16 DE DE2632007A patent/DE2632007C2/de not_active Expired
- 1976-07-16 FR FR7621874A patent/FR2318183A1/fr active Granted
- 1976-07-16 DE DE2660694A patent/DE2660694C2/de not_active Expired
- 1976-07-16 DE DE2660695A patent/DE2660695C2/de not_active Expired
- 1976-07-16 GB GB29756/76A patent/GB1517826A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2660695C2 (de) | 1989-06-15 |
| JPS6016450B2 (ja) | 1985-04-25 |
| FR2318183B1 (de) | 1981-11-20 |
| DE2632007A1 (de) | 1977-02-03 |
| FR2318183A1 (fr) | 1977-02-11 |
| DE2660694C2 (de) | 1986-03-13 |
| CA1087800A (en) | 1980-10-14 |
| GB1517826A (en) | 1978-07-12 |
| JPS5212300A (en) | 1977-01-29 |
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