IT8922893A1 - METHOD OF PREPARATION OF A POLYESTER COATING MATERIAL AND RELATIVE PRODUCT OBTAINED - Google Patents
METHOD OF PREPARATION OF A POLYESTER COATING MATERIAL AND RELATIVE PRODUCT OBTAINED Download PDFInfo
- Publication number
- IT8922893A1 IT8922893A1 IT1989A22893A IT2289389A IT8922893A1 IT 8922893 A1 IT8922893 A1 IT 8922893A1 IT 1989A22893 A IT1989A22893 A IT 1989A22893A IT 2289389 A IT2289389 A IT 2289389A IT 8922893 A1 IT8922893 A1 IT 8922893A1
- Authority
- IT
- Italy
- Prior art keywords
- coating material
- radical
- preparation
- polyester coating
- polyester
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 14
- 229920000728 polyester Polymers 0.000 title claims description 13
- 239000011248 coating agent Substances 0.000 title claims description 11
- 238000000576 coating method Methods 0.000 title claims description 11
- 238000002360 preparation method Methods 0.000 title claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000002513 isocyanates Chemical class 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 229920005906 polyester polyol Polymers 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 239000004088 foaming agent Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 229920005862 polyol Polymers 0.000 claims description 2
- 150000003077 polyols Chemical class 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 125000000524 functional group Chemical group 0.000 claims 2
- 239000006096 absorbing agent Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 150000007824 aliphatic compounds Chemical class 0.000 claims 1
- 150000001491 aromatic compounds Chemical class 0.000 claims 1
- 239000002904 solvent Substances 0.000 description 11
- 239000011347 resin Substances 0.000 description 10
- 229920005989 resin Polymers 0.000 description 10
- 238000006116 polymerization reaction Methods 0.000 description 7
- 238000007792 addition Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229940126062 Compound A Drugs 0.000 description 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Landscapes
- Polyesters Or Polycarbonates (AREA)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Description
D E S C R I Z I O N E DESCRIPTION
La presente invenzione si riferisce a un metodo di preparazione di un materiale di rivestimento poliestere e al relativo prodotto ottenuto. The present invention relates to a method of preparing a polyester coating material and to the related product obtained.
Il rapido sviluppo dell'industria chimica ha dato luogo a una stretta relazione fra le necessit? della vita umana e tutti i generi d? prodotti dei settore chimico. Articoli che vanno dalie materie prime destinate alle varie necessit? della vita quotidiana (quali ad esempio cuoio sintetico, materiale per scarpe, nastri adesivi, borse, articoli di vestiario, eccetera) sino a una grande quantit? di prodotti di svago ed educativi (quali ad esempio battelli si salvataggio, tende, eccetera) sono tutti strettamente collegati all?industria chimica. The rapid development of the chemical industry has given rise to a close relationship between the needs? of human life and all kinds d? products of the chemical sector. Articles ranging from raw materials intended for various needs? of daily life (such as synthetic leather, material for shoes, adhesive tapes, bags, clothing items, etc.) up to a large quantity? of leisure and educational products (such as rescue boats, tents, etc.) are all closely linked to the chemical industry.
Secondo un metodo classico di preparazione di un materiale di rivestimento poliestere, occorre aggiungere del solvente in una camera di polimerizzazione durante la polimerarizzazione stessa, al fine di diluire la resina utilizzata, altrimenti il peso molecolare aumenta e al contempo la viscosit? della resina diventa cos? elevata che la resina stessa pu? persino assumere uno stato semisolido . According to a classic method of preparation of a polyester coating material, it is necessary to add solvent in a polymerization chamber during the polymerization itself, in order to dilute the resin used, otherwise the molecular weight increases and at the same time the viscosity? of the resin becomes cos? high that the resin itself can? even assume a semi-solid state.
Inoltre occorre ancora aggiungere solvente di diluizione della viscosit? dei materiale di rivestimento poliestere prodotto, quando quest'ultimo viene ulteriormente lavorato per ottenere altri prodotti finali. Queste aggiunte di solvente non solo costituiscono un inconveniente nei confronti del processo di lavorazione, ma aumentano anche il costo di produzione. Al contempo la tossicit? del solvente rappresenta un inconveniente per quanto riguarda la salute degli addetti alla lavorazione e per quanto riguarda l'inquinamento ambientale. Furthermore, it is still necessary to add viscosity dilution solvent? of the polyester coating material produced, when the latter is further processed to obtain other final products. These solvent additions are not only an inconvenience to the manufacturing process, but also increase the cost of production. At the same time the toxicity? of the solvent represents a drawback as regards the health of the workers in the process and as regards environmental pollution.
Nel metodo classico ci sono due stadi principali di preparazione del materiale di rivestimento poliestere (vedasi Fig.l): In the classical method there are two main stages of preparation of the polyester coating material (see Fig. 1):
1. Stadio di preparazione della resina. 1. Preparation stage of the resin.
In questo stadio sostanze come poliolo-poliestere o poi iolo-polietere (A), isocianato (B), e addittivi (C) come pure solventi (S) ono immessi in una camera (V) di polimerizzazione per poiimerizzare la resina (D) da produrre. In this stage substances such as polyol-polyester or then polyol-polyether (A), isocyanate (B), and additives (C) as well as solvents (S) are placed in a polymerization chamber (V) to then polymerize the resin (D) to be produced.
2 . Stadio di utilizzazione della resina. 2 . Stage of use of the resin.
La resina prodotta a seguito del processo di polimerizzazione viene fornita a fabbricanti che la utilizzano nei loro processi di fabbricazione. The resin produced as a result of the polymerization process is supplied to manufacturers who use it in their manufacturing processes.
Durante tali processi viene nuovamente aggiunto del solvente S? per diluire ulteriormente la resina D? mentre la resina viene meccanicamente rimescolata con necessari additivi E (fase N) cos? da ottenere il materiale poliestere P destinato a rivestire le materie prime (fase U) e dopo essicazione (fase Z) ad essere utilizzato per la fabbricazione dei prodotti finali (fase F). During these processes is solvent S added again? to further dilute the resin D? while the resin is mechanically mixed with the necessary additives E (phase N) cos? to obtain the polyester material P intended to coat the raw materials (phase U) and after drying (phase Z) to be used for the manufacture of the final products (phase F).
I predetti due stadi possono essere effettuati sia in immediata successione sia separatamente secondo le necessit?. The aforementioned two stages can be carried out either in immediate succession or separately as needed.
Tuttavia occorre notare che in ogni caso occorre aggiungere solvente in sensibile quantit? durante la lavorazione e ci? costituisce il principale inconveniente del metodo convenzionale. However, it should be noted that in any case it is necessary to add solvent in significant quantities? during processing and there? constitutes the main drawback of the conventional method.
Considerato che sino ad ora, nel settore dell?industria chimica, nessuna tecnica innovativa di preparazione del materiale di rivestimento in poliestere ? stata ideata, uno scopo della presente invenzione ? quello di realizzare un metodo di preparazione di materiale di rivestimento poliestere in cui non si presenti la necessit? di utilizzare del solvente o occorra utilizzarlo in piccola quantit? e ci? sia durante il processo di preparazione della resina che nelle successive lavorazioni per pervenire ai pr?dotti finaii . Considering that up to now, in the chemical industry sector, no innovative technique for preparing the polyester coating material? been devised, a purpose of the present invention? that of realizing a method of preparation of polyester coating material in which the need arises? to use solvent or need to use it in small quantities? and there? both during the resin preparation process and in subsequent processing to reach the final products.
Le caratteristiche dell?invenzione risulteranno pi? evidenti dalla descrizione che segue fatta con riferimento alla figura 2 che illustra sinteticamente il diagramma di flusso del metodo secondo l?invenzione. Secondo tale metodo vengono mescolati direttamente mediante apposito macchinario {fase M) un composto A avente radicale -OH (poliolo poliestere o poliolo polietere) e un composto B avente radicale -NCO {isocianati ), ed addettivi C, E {addettivi comuni sono antiossidanti, assorbenti di ultravioletti, agenti schiumogeni, agenti regolatori della schiuma, sostanze di gonfiamento, agenti di miglioramento, eccetera ). The characteristics of the invention will result more? evident from the following description made with reference to Figure 2 which briefly illustrates the flow diagram of the method according to the invention. According to this method, a compound A having -OH radical (polyester polyol or polyether polyol) and a compound B having -NCO radical (isocyanates), and additives C, E {common additives are antioxidants), are mixed directly by means of a special machine (phase M), ultraviolet absorbents, foaming agents, foam regulating agents, swelling agents, enhancing agents, etc.).
La polimerizzazione ha quindi inizio e lentamente produce un materiale poliestere P di rivestimento che, nelle successive fasi U di utilizzazione, pu? essere direttamente applicato o spruzzato sulle superfici del materiale da rivestire o utilizzato per immergervi tale materiale. Il materiale cos? rivestito viene quindi sottoposto ad essicazione (fase Z) a una temperatura compresa fra 10 e 200 ?C per completare rapidamente il processo di polimerizzazione, ed ? quindi pronto per ulteriori lavorazioni (fase F) sino ad ottenere i prodotti finali. The polymerization then begins and slowly produces a polyester coating material P which, in the subsequent phases U of use, can? be directly applied or sprayed on the surfaces of the material to be coated or used to immerse such material. The material cos? coated is then subjected to drying (phase Z) at a temperature between 10 and 200 ° C to rapidly complete the polymerization process, and? then ready for further processing (phase F) until the final products are obtained.
La preparazione e lavorazione del materiale poliestere di rivestimento ottenuto con questo metodo possono procedere senza la necessit? di aggiunte di solvente . The preparation and processing of the polyester coating material obtained with this method can proceed without the need? of solvent additions.
La proporzione con cui i composti A, B, C ed E vengolo miscelati dipende dalle necessit? dell?utilizzatore . The proportion with which compounds A, B, C and E are mixed depends on the needs? of the user.
Parlando in generale il rapporto in peso equivalente di A rispetto a B pu? escillare nell?intervallo 0,1 - 10; il rapporto in peso di C ed E rispetto ad A pu? oscillare nell?intervallo 0,05 - 5. Generally speaking, the equivalent weight ratio of A to B pu? escillate in the range 0.1 - 10; the weight ratio of C and E with respect to A pu? oscillate in the range 0.05 - 5.
Col presente metodo la polimerizzazione pu? giungere a termine senza necessit? di aggiunte di solvente (o con aggiunte di lieve entit?). With this method, the polymerization can? come to an end without necessity? of solvent additions (or with minor additions).
I vantaggi si possono cos? riassumere: The advantages can be cos? to summarise:
- il risparmio di solvente si traduce in riduzione dei costi; - solvent saving translates into cost reduction;
- la reazione di miscelazione produce una grande quantit? di calore che pu? essere ricuperato; si verifica un maggior risparmio di energia; - does the mixing reaction produce a large amount? of heat that can? be recovered; greater energy savings occur;
- il materiale di rivestimento ? applicabile su una grande gamma di materiali (consentendo anche la produzione di materiali a tenuta d?aria); - the lining material? applicable on a large range of materials (also allowing the production of airtight materials);
- non si hanno effetti nocivi alla salute degli addetti alla lavorazione o nei confronti dell? ambiente . - there are no harmful effects on the health of workers in the process or towards the? environment.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2289389A IT1237551B (en) | 1989-12-29 | 1989-12-29 | Prepn. of resinous coating material, avoids use of large amounts of solvent - comprises mixing polyester poly:ol or polyether poly:ol, isocyanate(s) and additives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2289389A IT1237551B (en) | 1989-12-29 | 1989-12-29 | Prepn. of resinous coating material, avoids use of large amounts of solvent - comprises mixing polyester poly:ol or polyether poly:ol, isocyanate(s) and additives |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT8922893A0 IT8922893A0 (en) | 1989-12-29 |
| IT8922893A1 true IT8922893A1 (en) | 1991-06-29 |
| IT1237551B IT1237551B (en) | 1993-06-08 |
Family
ID=11201616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2289389A IT1237551B (en) | 1989-12-29 | 1989-12-29 | Prepn. of resinous coating material, avoids use of large amounts of solvent - comprises mixing polyester poly:ol or polyether poly:ol, isocyanate(s) and additives |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1237551B (en) |
-
1989
- 1989-12-29 IT IT2289389A patent/IT1237551B/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| IT1237551B (en) | 1993-06-08 |
| IT8922893A0 (en) | 1989-12-29 |
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| 0001 | Granted | ||
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19961217 |