IT1252447B - PVC stabiliser prepn. - by synthesis of di:hydro di:methyl pyridine di:carboxylic acid and polyester(s), removal of solvent by evapn. and drying - Google Patents
PVC stabiliser prepn. - by synthesis of di:hydro di:methyl pyridine di:carboxylic acid and polyester(s), removal of solvent by evapn. and dryingInfo
- Publication number
- IT1252447B IT1252447B IT2149990A IT2149990A IT1252447B IT 1252447 B IT1252447 B IT 1252447B IT 2149990 A IT2149990 A IT 2149990A IT 2149990 A IT2149990 A IT 2149990A IT 1252447 B IT1252447 B IT 1252447B
- Authority
- IT
- Italy
- Prior art keywords
- drying
- bis
- solvent
- synthesis
- polyester
- Prior art date
Links
- 238000001035 drying Methods 0.000 title abstract 3
- 239000002904 solvent Substances 0.000 title abstract 3
- 230000015572 biosynthetic process Effects 0.000 title abstract 2
- 229920000728 polyester Polymers 0.000 title abstract 2
- 238000003786 synthesis reaction Methods 0.000 title abstract 2
- BSKHPKMHTQYZBB-UHFFFAOYSA-N 2-methylpyridine Chemical compound CC1=CC=CC=N1 BSKHPKMHTQYZBB-UHFFFAOYSA-N 0.000 title 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 title 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 title 1
- 239000006077 pvc stabilizer Substances 0.000 title 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 4
- 230000008030 elimination Effects 0.000 abstract 3
- 238000003379 elimination reaction Methods 0.000 abstract 3
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 229910021529 ammonia Inorganic materials 0.000 abstract 2
- WQFXJSOUBPGBGW-UHFFFAOYSA-N 2,6-dimethylpyridine-3,5-dicarboxylic acid Chemical compound CC1=NC(C)=C(C(O)=O)C=C1C(O)=O WQFXJSOUBPGBGW-UHFFFAOYSA-N 0.000 abstract 1
- 239000004608 Heat Stabiliser Substances 0.000 abstract 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000012429 reaction media Substances 0.000 abstract 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Hydrogenated Pyridines (AREA)
Abstract
2,6-dimethyl pyridine 3,5-dicarboxylic acid polyester, for use as heat stabilisers of vinyl chloride polymers or copolymers, made by the known Hantsch synthesis involving (A) condensn. of a aldehyde with a bis-aceto-acetate and ammonia with elimination of water, or (B) condensn. of an aldehyde with a bis-beta-amino crotonate, and elimination of water and ammonia at (C) condensn. of an aldehyde with a bis-beta-amino crotonate and a bis-aceto-acetate with elimination of water, are recovered as a fine powder without purificn. by evaporation of solvent used as reaction medium and drying. The solvent is pref. removed by azeotropic distn. at 100 deg.C. max. and drying is in a fluidised bed with hot air at 100-190 deg.C.. (Reissue of the entry advised in week 9227 based on complete specification).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2149990A IT1252447B (en) | 1990-09-18 | 1990-09-18 | PVC stabiliser prepn. - by synthesis of di:hydro di:methyl pyridine di:carboxylic acid and polyester(s), removal of solvent by evapn. and drying |
| BR9103787A BR9103787A (en) | 1990-09-18 | 1991-09-02 | PROCESS FOR THE PREPARATION OF POLY-1,4-DIHYDRO-2,5-DIMETHYL-PYRIDINE-3,5-DICARBOXYL-ESTERS, POLYMER-BASED COMPOSITIONS OR COPYLINES OF VINYL CHLORIDE AND PROCESS FOR THE STABILIZATION OF POLYMERS OR CHLORIDE COPOLYMERS VINYL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2149990A IT1252447B (en) | 1990-09-18 | 1990-09-18 | PVC stabiliser prepn. - by synthesis of di:hydro di:methyl pyridine di:carboxylic acid and polyester(s), removal of solvent by evapn. and drying |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT9021499A0 IT9021499A0 (en) | 1990-09-18 |
| IT9021499A1 IT9021499A1 (en) | 1992-03-18 |
| IT1252447B true IT1252447B (en) | 1995-06-16 |
Family
ID=11182731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2149990A IT1252447B (en) | 1990-09-18 | 1990-09-18 | PVC stabiliser prepn. - by synthesis of di:hydro di:methyl pyridine di:carboxylic acid and polyester(s), removal of solvent by evapn. and drying |
Country Status (2)
| Country | Link |
|---|---|
| BR (1) | BR9103787A (en) |
| IT (1) | IT1252447B (en) |
-
1990
- 1990-09-18 IT IT2149990A patent/IT1252447B/en active IP Right Grant
-
1991
- 1991-09-02 BR BR9103787A patent/BR9103787A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT9021499A0 (en) | 1990-09-18 |
| BR9103787A (en) | 1992-05-19 |
| IT9021499A1 (en) | 1992-03-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted |