CN102558608A - Sebacic acid mercapto ethyl ester dimethyl tin heat stabilizing agent and preparation method thereof - Google Patents
Sebacic acid mercapto ethyl ester dimethyl tin heat stabilizing agent and preparation method thereof Download PDFInfo
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- CN102558608A CN102558608A CN201010606180XA CN201010606180A CN102558608A CN 102558608 A CN102558608 A CN 102558608A CN 201010606180X A CN201010606180X A CN 201010606180XA CN 201010606180 A CN201010606180 A CN 201010606180A CN 102558608 A CN102558608 A CN 102558608A
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- sebacic acid
- ethyl ester
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Abstract
The invention discloses a sebacic acid mercapto ethyl ester dimethyl tin heat stabilizing agent and a preparation method thereof. The preparation method comprises the three steps of a tinning reaction, an esterification and a synthetic reaction. Dimethyltin dichloride is prepared through the tinning reaction, and sebacic acid bis-mercapto ethanol ester is prepared through the esterification, and the sebacic acid mercapto ethyl ester dimethyl tin heat stabilizing agent is prepared through the synthetic reaction. The preparation method has the advantages of advanced production process and low manufacture cost; and the sebacic acid mercapto ethyl ester dimethyl tin heat stabilizing agent has no toxic and side effects and remarkable heat stabilizing effect, and is suitable for all PVC homopolymers, and a copolymer, a grafting polymer and a polymer blend of polyvinyl chloride.
Description
Technical field
The present invention relates to a kind of plastic heat stabilizer, especially relate to a kind of sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer and preparation method thereof.
Background technology
Polrvinyl chloride product is an advantage kind at home always, and in recent years, the output and the amount of finish of domestic PVC RESINS increased substantially for successive years, and average amplification is more than 20%.In 10 measures of pulling domestic demand, great hydraulic engineering construction will adopt polychloroethylene pipes and mould material in a large number; In the protection Comfortable Housing Project, low-rent housing construction, work of renovating shantytowns, nomad settle down that plastic door-window is absolutely necessary in the engineering; In great infrastructure constructions such as urban network reconstruction, Rail Highway and airport, polyvinyl chloride electrical wire and cable belongs to base mateiral; The development of automobile industry, electronic information industry and light industry is with the demand that more directly increases various polyvinyl chloride plastic material products and spare and accessory parts.And thermo-stabilizer be plastics such as SE must add material.Yet at present, the main body of thermo-stabilizer still is the lead salt stabilizer that environment is had harm in the home market, and lead salt stabilizer is not only poisonous, and pollutes also big.Developed country forbids the use of lead salts thermo-stabilizer in succession, and China also works out restriction and uses this lead salts stablizer, thereby chance is provided for the development of other stablizer.PVC mainly contains lead salts, metallic soap class and organotin, antimony organic, rare-earth stabilizer five big classes with thermo-stabilizer at present.Wherein organo-tin het stabilizer has good thermostability, and nontoxicity, the transparency, processing characteristics are superior to other stablizers, becomes one type of stablizer of at present tool development.The wide in variety of early development is main with butyl tin and tin octylate; And these two kinds of organotin stabilizers all have toxicity to a certain degree; Thereby withdraw from the market gradually; Methyl tin has nontoxic advantage having under the better performance prerequisite comparatively speaking, has become the focus of thermo-stabilizer research and development.Last century; The tin methide (TM-181) of the M&T chemical company exploitation of the U.S. is the efficient stable agent of a kind of PVC of being used for, compares with his auxiliary agent, and it has good solubility; Transparency of products can be improved, under the lower situation of consumption, also thermostable effect preferably can be reached.,, present methyl tin manufacturer ubiquity manufacturing cost is higher, product has certain toxic side effect, though have good thermostable effect, not outstanding.
Summary of the invention
The objective of the invention is: provide that a kind of thermostable effect is outstanding, low cost of manufacture, the sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer that has no side effect and preparation method thereof.
The technical scheme that the present invention adopts is: its structural formula of sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer is following:
The preparation method of sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer of the present invention may further comprise the steps:
(a) tin reaction: in glass putty and the disposable input reaction kettle of catalyzer; Feeding methyl chloride and tin tetrachloride then reacts in the tin reaction kettle; Reaction conditions is 180 ℃-240 ℃ of temperature; 13-18 normal atmosphere of pressure generate dimethyltin chloride, make aqueous chloride solution through distillation again; Reaction equation is:
(b) esterification: in reaction kettle of the esterification, feed sebacic acid, the mercaptoethanol of metering, under the effect of catalyzer, be warmed to 100 ℃-150 ℃ and reacted 6-10 hour; After reaction is accomplished; Through refluxing, remove the water in the dereaction, obtain the product bullion; Through washing, drying, make the two mercaptoethanol esters of sebacic acid; Reaction equation is:
(c) building-up reactions: the two mercaptoethanol esters of the sebacic acid that step (b), (a) are made, aqueous chloride solution be by being metered in the synthesis reactor, heats up, stirring reaction, and the ammonia soln that drips concentration simultaneously and be 10-25% neutralizes; React after 6 hours, when pH value reaches 6-7, stop dropping ammonia solution; Continue to stir again 0.5-2 hour, and left standstill under the insulation, treat that material layering handles; Remove and anhydrate and ammonium chloride; Again material is washed with pure water, remove moisture, obtain desired product.Reaction equation is:
The invention has the beneficial effects as follows: 1,, generate isooctyl mercaptoacetate, and then react with the methyl tin chloride with traditional production process flow process Thiovanic acid and octanol reaction; Generate the cis reacting phase ratio of isooctyl mercaptoacetate tin methide, the related reaction of technology of the present invention belongs to contrary formula reaction, is to generate organic acid sulfydryl ethyl ester with mercaptoethanol and organic acid reaction; Also claim contrary ester; And then with methyl chloride tin reaction, generate sebacic acid sulfydryl ethyl ester tin methide, production technique is advanced; The product reliable and stable, thermostable effect is outstanding.2, be a kind of stablizer of wide spectrum efficiently; This product is applicable to all PVC homopolymer, and the multipolymer of SE, graft polymerization thing and polymer blend; Because it is nontoxic; It can be used in packaging material for food, quickfrozen food, the medical infusion tube material, can do again in agricultural film, electric wire, thin plate, leatheroid, the outside the pale of civilization water pipe, is the first-selection that substitutes poisonous stablizer (lead, cadmium, barium salt and metallic soap class).3, can improve the molecular weight of methyl tin stabilizer, reduce the volatilization of small molecules stablizer, become odorless clean product.Through the composite oilness that can increase this product, improve the thermo-stabilizer function.4, reduce production cost, said with methyl chloride from raw material to have replaced somewhat expensive monobromethane and methyl iodide, simultaneously, saved the material of solvent toluene and so in synthetic.5, made finished product is faint yellow or colourless transparent liquid, and is nonpoisonous and tasteless, three-waste free pollution.
Embodiment
Sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer of the present invention, its structural formula is following:
Following embodiment is used to explain preparation method of the present invention, but the invention is not restricted to following embodiment.
Embodiment 1:
Preparing method of the present invention may further comprise the steps:
(a), earlier with glass putty and catalyzer by in the disposable input reaction kettle of special feeder for solid materials; Feed methyl chloride then, tin tetrachloride reacts (180 ℃ of reaction conditions temperature, 15 normal atmosphere of pressure) in reaction kettle, reaction end can be judged through the consumption of methyl chloride and the variation of temperature in the kettle.The reaction kettle of tin reaction is a kind of special not only corrosion-resistant but also withstand voltage third category vessel; In the special whisking appliance of suitable solid-liquid-vapour phase reaction is housed; And has excellent sealing performance; Pressure and temperature, controlling reaction time and speed that the temperature of inlet and oil heater through the control methyl chloride is regulated the tin reaction.After the tin reaction finishes, utilize the interior surplus pressure of still through material guiding pipe muriate to be pressed in the still kettle, still kettle (temperature is 130 ℃) under negative pressure (vacuum pump) and external steam heating makes aqueous chloride solution with the muriate distillation.
The reaction equation of this process is:
(b), in reaction kettle of the esterification, feed sebacic acid, the mercaptoethanol of metering, under the effect of catalyzer, react through being warmed to 120 ℃; In 8 hours reaction times, through refluxing, remove the water in the dereaction then; Obtain the product bullion,, make the two mercaptoethanol esters of sebacic acid through washing, drying.
The reaction equation of this process is:
(c) the two mercaptoethanol esters of the sebacic acid that step (b), (a) is made, aqueous chloride solution be by being metered in the synthesis reactor, heats up, stirring reaction, drips concentration simultaneously and be 20% ammonia soln and neutralize, and reacts after 6 hours; When pH value reaches 6-7, stop dropping ammonia solution, continue again to stir 1 hour; Insulation is left standstill down, treats that material layering handles, except that anhydrating and ammonium chloride; Again material is carried out washed twice with pure water, remove moisture, obtain desired product.
The reaction equation of this process is:
Embodiment 2:
Preparing method of the present invention may further comprise the steps:
(a) tin reaction: in glass putty and the disposable input reaction kettle of catalyzer; Feed methyl chloride and tin tetrachloride then and in the tin reaction kettle, react, reaction conditions is 180 ℃ of temperature, 13 normal atmosphere of pressure; Generate dimethyltin chloride, make aqueous chloride solution through distillation again.
(b) esterification: in reaction kettle of the esterification, feed sebacic acid, the mercaptoethanol of metering, under the effect of catalyzer, be warmed to 120 ℃ and reacted 10 hours; After reaction is accomplished; Through refluxing, remove the water in the dereaction, obtain the product bullion; Through washing, drying, make the two mercaptoethanol esters of sebacic acid.
(c) building-up reactions: the two mercaptoethanol esters of the sebacic acid that step (b), (a) are made, aqueous chloride solution be by being metered in the synthesis reactor, heats up, stirring reaction, drips concentration simultaneously and be 10% ammonia soln and neutralize; React after 6 hours, when pH value reaches 6-7, stop dropping ammonia solution; Continue to stir again 2 hours, and left standstill under the insulation, treat that material layering handles; Remove and anhydrate and ammonium chloride; Again material is carried out washed twice with pure water, remove moisture, obtain desired product.
Embodiment 3:
Preparing method of the present invention may further comprise the steps:
(a) tin reaction: in glass putty and the disposable input reaction kettle of catalyzer; Feed methyl chloride and tin tetrachloride then and in the tin reaction kettle, react, reaction conditions is 240 ℃ of temperature, 18 normal atmosphere of pressure; Generate dimethyltin chloride, make aqueous chloride solution through distillation again.
(b) esterification: in reaction kettle of the esterification, feed sebacic acid, the mercaptoethanol of metering, under the effect of catalyzer, be warmed to 150 ℃ and reacted 6 hours; In the reaction process; Through refluxing, remove the water in the dereaction, obtain the product bullion; Through washing, drying, make the two mercaptoethanol esters of sebacic acid.
(c) building-up reactions: the two mercaptoethanol esters of the sebacic acid that step (b), (a) are made, aqueous chloride solution be by being metered in the synthesis reactor, heats up, stirring reaction, drips concentration simultaneously and be 25% ammonia soln and neutralize; React after 6 hours, when pH value reaches 6-7, stop dropping ammonia solution; Continue to stir again 0.5 hour, and left standstill under the insulation, treat that material layering handles; Remove and anhydrate and ammonium chloride; Again material is carried out washed twice with pure water, remove moisture, obtain desired product.
The sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer of above various embodiments of the present invention preparation is the product bullion, with pump with the material bullion, through under meter with 1m
3/ t speed feeds in the preheater of steam heating about 105 ℃, and fully preheating gets in the falling-film evaporator that temperature is controlled at 100 ℃-108 ℃ then; Under the effect of high vacuum; Remove the moisture in the material respectively, the impurity that low gold-plating divides gets into and removes peculiar smell in the deodorizing tower; Get at last and carry out the dry product sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer elaboration that gets in the dry still, elaboration density is 1.05g/m
3-1.23g/m
3, tin content is at the elaboration of 11.5%-24.5%.
Comparative Examples 1: thermal stability simultaneous test.
Make the PVC print A of the sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer that adds the present invention's preparation and the PVC print B that the more lead salt stabilizer of present domestic use is done with same working specification.It is dry that all prints are put into baking oven, and oven temperature is set at 180 ℃, whenever at a distance from 10 minutes record print change in color (result sees table 1).
Table 1 print variable color simultaneous test
We can find clearly from simultaneous test, and sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer involved in the present invention has remarkable advantages with respect to traditional thermo-stabilizer the most commonly used.Sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer can effectively delay PVC and decompose and rate of ageing, has more good resistance toheat.Simultaneously, find also that in the sample making process sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer has better lubricity and solubility property, helps PVC to be cast as the mould of relative complex.
Should be appreciated that above embodiments of the invention only are for a better understanding of the present invention and the non-limitative illustration that the present invention is made that all those skilled in the art are getable without creative work institute, still belong to protection scope of the present invention.
Claims (3)
1. sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer, its structural formula is following:
2. the preparation method of a sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer is characterized in that may further comprise the steps:
(a) tin reaction: in glass putty and the disposable input reaction kettle of catalyzer; Feeding methyl chloride and tin tetrachloride then reacts in the tin reaction kettle; Reaction conditions is 180 ℃-240 ℃ of temperature; 13-18 normal atmosphere of pressure generate dimethyltin chloride, make aqueous chloride solution through distillation again;
(b) esterification: in reaction kettle of the esterification, feed sebacic acid, the mercaptoethanol of metering, under the effect of catalyzer, be warmed to 100 ℃-150 ℃ and reacted 6-10 hour; In the reaction process; Through refluxing, remove the water in the dereaction, obtain the product bullion; Through washing, drying, make the two mercaptoethanol esters of sebacic acid;
(c) building-up reactions: the two mercaptoethanol esters of the sebacic acid that step (b), (a) are made, aqueous chloride solution be by being metered in the synthesis reactor, heats up, stirring reaction, and the ammonia soln that drips concentration simultaneously and be 10%-25% neutralizes; React after 6 hours, when pH value reaches 6-7, stop dropping ammonia solution; Continue to stir again 0.5-2 hour, and left standstill under the insulation, treat that material layering handles; Remove and anhydrate and ammonium chloride; Again material is washed with pure water, remove moisture, obtain desired product.
3. the preparation method of sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer according to claim 2 is characterized in that step (c) products obtained therefrom is a bullion, is 1.05-1.23g/cm through being processed into density
3, tin content is at the sebacic acid sulfydryl ethyl ester tin methide thermo-stabilizer of 11.5%-24.5%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010606180XA CN102558608A (en) | 2010-12-27 | 2010-12-27 | Sebacic acid mercapto ethyl ester dimethyl tin heat stabilizing agent and preparation method thereof |
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| CN201010606180XA CN102558608A (en) | 2010-12-27 | 2010-12-27 | Sebacic acid mercapto ethyl ester dimethyl tin heat stabilizing agent and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107266445A (en) * | 2017-06-05 | 2017-10-20 | 穆开蕊 | The piperidines and the preparation method of the triazole tin complex of pyrido 1,2,3 acted on PVC stabilizer |
| CN107266446A (en) * | 2017-06-05 | 2017-10-20 | 毛伸 | The piperidines and the preparation method of pyridone tin complex acted on PVC stabilizer |
| CN107266443A (en) * | 2017-06-05 | 2017-10-20 | 穆开蕊 | The preparation method of piperidines with PVC stabilizer function and pyridone tin complex |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB743304A (en) * | 1952-10-16 | 1956-01-11 | Argus Chemical Lab Inc | Tin compounds linked to esters of mercapto alcohols with dibasic acids and resins stabilized therewith |
| CN1634881A (en) * | 2004-11-19 | 2005-07-06 | 华南理工大学 | Isooctanoic acid mercapto alcohol ester and its preparation method and use |
| CN101475584A (en) * | 2009-02-09 | 2009-07-08 | 扬州哈泰克材料有限公司 | Methyltin stabiliser and preparation thereof |
| US20100190902A1 (en) * | 2009-01-27 | 2010-07-29 | Chemtura Corporation | Alkyltin sulfanyl ester thiols |
-
2010
- 2010-12-27 CN CN201010606180XA patent/CN102558608A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB743304A (en) * | 1952-10-16 | 1956-01-11 | Argus Chemical Lab Inc | Tin compounds linked to esters of mercapto alcohols with dibasic acids and resins stabilized therewith |
| CN1634881A (en) * | 2004-11-19 | 2005-07-06 | 华南理工大学 | Isooctanoic acid mercapto alcohol ester and its preparation method and use |
| US20100190902A1 (en) * | 2009-01-27 | 2010-07-29 | Chemtura Corporation | Alkyltin sulfanyl ester thiols |
| CN101475584A (en) * | 2009-02-09 | 2009-07-08 | 扬州哈泰克材料有限公司 | Methyltin stabiliser and preparation thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107266445A (en) * | 2017-06-05 | 2017-10-20 | 穆开蕊 | The piperidines and the preparation method of the triazole tin complex of pyrido 1,2,3 acted on PVC stabilizer |
| CN107266446A (en) * | 2017-06-05 | 2017-10-20 | 毛伸 | The piperidines and the preparation method of pyridone tin complex acted on PVC stabilizer |
| CN107266443A (en) * | 2017-06-05 | 2017-10-20 | 穆开蕊 | The preparation method of piperidines with PVC stabilizer function and pyridone tin complex |
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Application publication date: 20120711 |
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