DE1769243C2 - Verfahren zum Stabilisieren von PoIyacetalen - Google Patents
Verfahren zum Stabilisieren von PoIyacetalenInfo
- Publication number
- DE1769243C2 DE1769243C2 DE1769243A DE1769243A DE1769243C2 DE 1769243 C2 DE1769243 C2 DE 1769243C2 DE 1769243 A DE1769243 A DE 1769243A DE 1769243 A DE1769243 A DE 1769243A DE 1769243 C2 DE1769243 C2 DE 1769243C2
- Authority
- DE
- Germany
- Prior art keywords
- carbon atoms
- polyacetals
- percent
- formaldehyde
- polycondensate
- 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
- 229920006324 polyoxymethylene Polymers 0.000 title claims description 24
- 238000000034 method Methods 0.000 title claims description 7
- 230000000087 stabilizing effect Effects 0.000 title claims description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 45
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- 125000004432 carbon atom Chemical group C* 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 235000013877 carbamide Nutrition 0.000 claims description 6
- 125000005704 oxymethylene group Chemical group [H]C([H])([*:2])O[*:1] 0.000 claims description 6
- 238000006068 polycondensation reaction Methods 0.000 claims description 5
- 229930182556 Polyacetal Natural products 0.000 claims description 4
- 125000003368 amide group Chemical group 0.000 claims description 4
- 150000001408 amides Chemical class 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 125000005521 carbonamide group Chemical group 0.000 claims description 4
- 150000001991 dicarboxylic acids Chemical class 0.000 claims description 4
- 238000001694 spray drying Methods 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 239000012736 aqueous medium Substances 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 3
- 125000001424 substituent group Chemical group 0.000 claims description 3
- 150000001470 diamides Chemical class 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 125000003710 aryl alkyl group Chemical group 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- 210000002700 urine Anatomy 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- BGJSXRVXTHVRSN-UHFFFAOYSA-N 1,3,5-trioxane Chemical compound C1OCOCO1 BGJSXRVXTHVRSN-UHFFFAOYSA-N 0.000 description 6
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 5
- -1 cyclic acetals Chemical class 0.000 description 5
- 239000003381 stabilizer Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 239000012760 heat stabilizer Substances 0.000 description 4
- QZUPTXGVPYNUIT-UHFFFAOYSA-N isophthalamide Chemical compound NC(=O)C1=CC=CC(C(N)=O)=C1 QZUPTXGVPYNUIT-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 125000002947 alkylene group Chemical group 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 150000003672 ureas Chemical class 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- AUAGGMPIKOZAJZ-UHFFFAOYSA-N 1,3,6-trioxocane Chemical compound C1COCOCCO1 AUAGGMPIKOZAJZ-UHFFFAOYSA-N 0.000 description 2
- GWEHVDNNLFDJLR-UHFFFAOYSA-N 1,3-diphenylurea Chemical compound C=1C=CC=CC=1NC(=O)NC1=CC=CC=C1 GWEHVDNNLFDJLR-UHFFFAOYSA-N 0.000 description 2
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 2
- FCOSCHPUATWOGN-UHFFFAOYSA-N 2-[bis(1-amino-2-hydroxy-1-oxopropan-2-yl)amino]-2-hydroxypropanamide Chemical compound NC(=O)C(O)(C)N(C(C)(O)C(N)=O)C(C)(O)C(N)=O FCOSCHPUATWOGN-UHFFFAOYSA-N 0.000 description 2
- RERXJGPPGMABOY-UHFFFAOYSA-N 3-[bis(3-amino-3-oxopropyl)amino]propanamide Chemical compound NC(=O)CCN(CCC(N)=O)CCC(N)=O RERXJGPPGMABOY-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- KZMGYPLQYOPHEL-UHFFFAOYSA-N Boron trifluoride etherate Chemical compound FB(F)F.CCOCC KZMGYPLQYOPHEL-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- 150000003857 carboxamides Chemical class 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 125000005702 oxyalkylene group Chemical group 0.000 description 2
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- AQSQFWLMFCKKMG-UHFFFAOYSA-N 1,3-dibutylurea Chemical compound CCCCNC(=O)NCCCC AQSQFWLMFCKKMG-UHFFFAOYSA-N 0.000 description 1
- VDFVNEFVBPFDSB-UHFFFAOYSA-N 1,3-dioxane Chemical compound C1COCOC1 VDFVNEFVBPFDSB-UHFFFAOYSA-N 0.000 description 1
- YEHMKQZZSLVLEM-UHFFFAOYSA-N 1-methyl-3-(2-methylphenyl)urea Chemical compound CNC(=O)NC1=CC=CC=C1C YEHMKQZZSLVLEM-UHFFFAOYSA-N 0.000 description 1
- QJIJECSQYKAVBF-UHFFFAOYSA-N 2-(methoxymethyl)-1,3-dioxolane Chemical compound COCC1OCCO1 QJIJECSQYKAVBF-UHFFFAOYSA-N 0.000 description 1
- QRZUQPLCCGUHIG-UHFFFAOYSA-N 2-[(1-amino-2-hydroxy-1-oxopropan-2-yl)amino]-2-hydroxypropanamide Chemical compound N(C(C(=O)N)(O)C)C(C(=O)N)(O)C QRZUQPLCCGUHIG-UHFFFAOYSA-N 0.000 description 1
- HGMBEFYZNDKFQJ-UHFFFAOYSA-N 2-[(2-amino-2-oxoethyl)amino]acetamide Chemical compound NC(=O)CNCC(N)=O HGMBEFYZNDKFQJ-UHFFFAOYSA-N 0.000 description 1
- CVTGEDNIBVTKBJ-UHFFFAOYSA-N 2-[bis(2-amino-2-oxoethyl)amino]acetamide Chemical compound NC(=O)CN(CC(N)=O)CC(N)=O CVTGEDNIBVTKBJ-UHFFFAOYSA-N 0.000 description 1
- WYIHUDNDPCJCJL-UHFFFAOYSA-N 2-tert-butyl-6-[1-(3-tert-butyl-2-hydroxy-5-methylphenyl)butyl]-4-methylphenol Chemical compound C=1C(C)=CC(C(C)(C)C)=C(O)C=1C(CCC)C1=CC(C)=CC(C(C)(C)C)=C1O WYIHUDNDPCJCJL-UHFFFAOYSA-N 0.000 description 1
- GVNWZKBFMFUVNX-UHFFFAOYSA-N Adipamide Chemical compound NC(=O)CCCCC(N)=O GVNWZKBFMFUVNX-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- FMAZQSYXRGRESX-UHFFFAOYSA-N Glycidamide Chemical compound NC(=O)C1CO1 FMAZQSYXRGRESX-UHFFFAOYSA-N 0.000 description 1
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 1
- WRYCSMQKUKOKBP-UHFFFAOYSA-N Imidazolidine Chemical compound C1CNCN1 WRYCSMQKUKOKBP-UHFFFAOYSA-N 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- MGJKQDOBUOMPEZ-UHFFFAOYSA-N N,N'-dimethylurea Chemical compound CNC(=O)NC MGJKQDOBUOMPEZ-UHFFFAOYSA-N 0.000 description 1
- CQZBPRUQWUSSCZ-UHFFFAOYSA-N NC(CCN1CN(CCC(O)=O)CC1)=O Chemical compound NC(CCN1CN(CCC(O)=O)CC1)=O CQZBPRUQWUSSCZ-UHFFFAOYSA-N 0.000 description 1
- 125000004036 acetal group Chemical group 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000002648 azanetriyl group Chemical group *N(*)* 0.000 description 1
- ZLDKOMQIJMFKEO-UHFFFAOYSA-N butane-1,1-diol 1,3-dioxane Chemical compound O1COCCC1.C(CCC)(O)O ZLDKOMQIJMFKEO-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 150000004292 cyclic ethers Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- VDBXLXRWMYNMHL-UHFFFAOYSA-N decanediamide Chemical compound NC(=O)CCCCCCCCC(N)=O VDBXLXRWMYNMHL-UHFFFAOYSA-N 0.000 description 1
- 125000004427 diamine group Chemical group 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000006266 etherification reaction Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229940042795 hydrazides for tuberculosis treatment Drugs 0.000 description 1
- 150000002429 hydrazines Chemical class 0.000 description 1
- 150000007857 hydrazones Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- YAMHXTCMCPHKLN-UHFFFAOYSA-N imidazolidin-2-one Chemical compound O=C1NCCN1 YAMHXTCMCPHKLN-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- GYCDHEZHNNORRE-UHFFFAOYSA-N n,n'-dimethyloctanediamide Chemical compound CNC(=O)CCCCCCC(=O)NC GYCDHEZHNNORRE-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- FJXWKBZRTWEWBJ-UHFFFAOYSA-N nonanediamide Chemical compound NC(=O)CCCCCCCC(N)=O FJXWKBZRTWEWBJ-UHFFFAOYSA-N 0.000 description 1
- SJYNFBVQFBRSIB-UHFFFAOYSA-N norbornadiene Chemical compound C1=CC2C=CC1C2 SJYNFBVQFBRSIB-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 125000006413 ring segment Chemical group 0.000 description 1
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 150000003585 thioureas Chemical class 0.000 description 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
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
-
- 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
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08G12/043—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with at least two compounds covered by more than one of the groups C08G12/06 - C08G12/24
- C08G12/046—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with at least two compounds covered by more than one of the groups C08G12/06 - C08G12/24 one being urea or thiourea
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
- C08L59/02—Polyacetals containing polyoxymethylene sequences only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1769243A DE1769243C2 (de) | 1968-04-25 | 1968-04-25 | Verfahren zum Stabilisieren von PoIyacetalen |
| FR6911977A FR2006884A1 (enExample) | 1968-04-25 | 1969-04-17 | |
| BE731645D BE731645A (enExample) | 1968-04-25 | 1969-04-17 | |
| US818116A US3641196A (en) | 1968-04-25 | 1969-04-21 | Stabilizing polyacetals |
| NL6906285A NL6906285A (enExample) | 1968-04-25 | 1969-04-23 | |
| GB20924/69A GB1255546A (en) | 1968-04-25 | 1969-04-24 | Stabilizing polyacetals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1769243A DE1769243C2 (de) | 1968-04-25 | 1968-04-25 | Verfahren zum Stabilisieren von PoIyacetalen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1769243B1 DE1769243B1 (de) | 1971-02-11 |
| DE1769243C2 true DE1769243C2 (de) | 1975-05-07 |
Family
ID=5700063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1769243A Expired DE1769243C2 (de) | 1968-04-25 | 1968-04-25 | Verfahren zum Stabilisieren von PoIyacetalen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3641196A (enExample) |
| BE (1) | BE731645A (enExample) |
| DE (1) | DE1769243C2 (enExample) |
| FR (1) | FR2006884A1 (enExample) |
| GB (1) | GB1255546A (enExample) |
| NL (1) | NL6906285A (enExample) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4811217B1 (enExample) * | 1970-05-28 | 1973-04-11 | ||
| DE2540207B1 (de) * | 1975-09-10 | 1976-11-18 | Degussa | Polyoxymethylen-Formmassen(I) |
| IT8021165A0 (it) * | 1980-04-03 | 1980-04-03 | Montedison Spa | Nuovo prodotto di condensazione n.n'-etilenurea-formaldeide. |
-
1968
- 1968-04-25 DE DE1769243A patent/DE1769243C2/de not_active Expired
-
1969
- 1969-04-17 BE BE731645D patent/BE731645A/xx unknown
- 1969-04-17 FR FR6911977A patent/FR2006884A1/fr not_active Withdrawn
- 1969-04-21 US US818116A patent/US3641196A/en not_active Expired - Lifetime
- 1969-04-23 NL NL6906285A patent/NL6906285A/xx unknown
- 1969-04-24 GB GB20924/69A patent/GB1255546A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1255546A (en) | 1971-12-01 |
| BE731645A (enExample) | 1969-10-17 |
| NL6906285A (enExample) | 1969-10-28 |
| US3641196A (en) | 1972-02-08 |
| DE1769243B1 (de) | 1971-02-11 |
| FR2006884A1 (enExample) | 1970-01-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C2 | Grant after previous publication (2nd publication) |