CN101367758A - Light stabilizer 298 and manufacturing process thereof - Google Patents
Light stabilizer 298 and manufacturing process thereof Download PDFInfo
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- CN101367758A CN101367758A CNA2008101245763A CN200810124576A CN101367758A CN 101367758 A CN101367758 A CN 101367758A CN A2008101245763 A CNA2008101245763 A CN A2008101245763A CN 200810124576 A CN200810124576 A CN 200810124576A CN 101367758 A CN101367758 A CN 101367758A
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- photostabilizer
- light stabilizer
- manufacturing process
- methyl oleate
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Abstract
The present invention discloses a manufacturing process of a light stabilizer 298. The process provides a crude product which is synthesized through the reaction of methyl oleate and light stabilizer intermediate 2, 2, 6, 6-tetramethyl piperidinol in quantitative petroleum ether under the condition with a load catalyst tetrabutyl phthalicate, the methyl oleate is extracted with waste oil and has no toxicity or methyl oleate groups of large component, and the methyl oleate is added into the light stabilizer to prepare a novel highly efficient and non-toxic light stabilizer. On one hand, the light stability is maintained in the structure of the product; on the other hand, the adoption of double bond activity groups can lead the processing of the product into an auxiliary agent of larger molecular weight. The present invention can be used in the plastic packing, in particular in the food packing, and has excellent prospects for application.
Description
Technical field:
The present invention relates to a kind of photostabilizer and manufacturing process thereof, be specifically related to a kind of efficient, multi-functional, nontoxic, can use photostabilizer 298 products on food pack and preparation method thereof.
Background technology:
Photostabilizer 3853 is as a kind of additive of used for packing foods, use very extensive, but do not make it easily produce transport property owing to not containing two keys containing of its residual trace in tin metal and the product toward the macromole direction is synthetic very difficult, thereby influenced its range of application.
Summary of the invention:
The object of the present invention is to provide a kind of environmentally friendlyly, and have efficient, multi-functional, nontoxic photostabilizer and production method.
The technology of the present invention solution is: a kind of photostabilizer 298 is characterized in that: the molecular structural formula of described photostabilizer 298 is as follows:
Wherein R is: C
16-C
20, described C
16-C
20Include two keys
Account for and be mainly for: C
16-C
18 (95%)
A kind of manufacturing process of making photostabilizer 298 at first makes photostabilizer 298 crude products, makes through processes such as dehydration, separating methanol, filtration, desolventizings then; It is characterized in that: the described technology that makes photostabilizer 298 crude products is: with Witconol 2301 and photostabilizer intermediate 2,2,6, the 6-tetramethylpiperidinol is synthesized into, and reaction formula is:
Described Witconol 2301: 2,2,6, the mol ratio of 6-tetramethylpiperidinol is 1:1.
The beneficial effect of the said products and production method is: photostabilizer can prevent macromolecular material generation photoaging, prolongs its work-ing life greatly, and effect is very very remarkable.Its consumption is few, needs the 0.01%-0.05% of macromolecular material weight usually, and photostabilizer has become the important class of additives for plastics, particularly hindered amine light stabilizer and had the technology environmental protection, and product has low toxicity, performance such as efficient, multi-functional.
Up-to-date technical development is to the transport property of photostabilizer system, and many-sided characteristics such as extracting, volatile matter, smell are all had higher requirement.Because the range of application of raw-material performance direct relation product.How to design and synthesize the new developing direction that the additive that is used for using in the food product pack just becomes the photostabilizer field.
The present invention is nontoxic by having, the Witconol 2301 group of big component is incorporated in the photostabilizer, prepare a kind of new and effective nontoxic photostabilizer, this product structure has kept light stability on the one hand, introduces two key active groups in addition on the one hand and makes product also can be processed into the more auxiliary agent of macromolecule.
This photostabilizer particularly can be used for food with packing in plastic wrapping, has good application prospects.
Concrete embodiment
The invention will be further described below in conjunction with example:
Embodiment 1:
The preparation method
(a) condenser is being housed, return line, thermometer, agitator, in the reaction flask of the 500ml of dropping funnel and nitrogen inlet, to add 2 of quantitative 0.3mol (47.1g), 2,6, the 6-tetramethylpiperidinol, 0.3mol (87g) Witconol 2301,60g solvent sherwood oil drops in the reactor, starts agitator under 110 ℃, begins simultaneously to heat to reactor, be warming up to dehydration about 110 ℃ earlier, dehydration finishes, and adds the loading type phthalandione four butyl ester catalyzer of 0.8g again, is warming up to 120-125 ℃ of following backflow separating methanol reactions, to the methyl alcohol of extraction during to theoretical amount, sampling analysis, qualified, end of synthesis.
(b) aftertreatment: the gac that (a) synthetic good material cooling is added 5g, refluxed 2 hours, use B heat filtering loading type phthalandione four butyl ester catalyzer and gacs down at 85-90 ℃, filtration finishes, beginning is taken off sherwood oil with the recirculated water vacuum pump very down at height, take off complete, photostabilizer 298, yield is more than 93%.The molecular formula of described photostabilizer is:
Wherein the Witconol 2301 molecular-weight average is=290
Embodiment 2
(a) condenser is being housed, return line, thermometer, agitator, in the reaction flask of the 500ml of dropping funnel and nitrogen inlet, to add 2 of quantitative 0.3mol (47.1g), 2,6, the 6-tetramethylpiperidinol, 0.3mol (87g) Witconol 2301,60g solvent sherwood oil drops in the reactor, starts agitator under 110 ℃, begins simultaneously to heat to reactor, be warming up to dehydration about 110 ℃ earlier, dehydration finishes, and adds the phthalandione four butyl ester catalyzer of 0.5g again, is warming up to 120-125 ℃ of following backflow separating methanol reactions, to the methyl alcohol of extraction during to theoretical amount, sampling analysis, qualified, end of synthesis.
(b) aftertreatment: (a) synthetic good material is added the washing of 100g water once, the gac that adds 5g, finish 105-110 ℃ of following reflux dewatering dehydrations, filter down at 85-95 ℃ with B, filtration finishes, and beginning is taken off sherwood oil with the recirculated water vacuum pump very down at height, takes off complete, get photostabilizer 298, yield is more than 90%.Gained photostabilizer 298 molecular formula are with embodiment 1.
Claims (4)
1. photostabilizer, it is characterized in that: described photostabilizer is a photostabilizer 298, and its molecular structural formula is as follows:
Wherein R is: C
16-C
20, described C
16-C
20Include two keys
Account for and be mainly for: C
16-C
18 (95%)
2. a manufacturing process of making the described photostabilizer of claim 1 at first makes described photostabilizer 298 crude products of claim 1, makes through processes such as dehydration, separating methanol, filtration, desolventizings then; It is characterized in that: the described technology that makes photostabilizer 298 crude products is: with Witconol 2301 and photostabilizer intermediate 2,2,6, the 6-tetramethylpiperidinol adds quantitative sherwood oil and is synthesized in the effect of loaded catalyst phthalandione four butyl esters, and reaction formula is:
3. a kind of manufacturing process of making photostabilizer according to claim 2, it is characterized in that: described temperature of reaction is: 105-110 ℃.
4. a kind of manufacturing process of making photostabilizer according to claim 2 is characterized in that: described Witconol 2301 and 2,2,6, the mol ratio of 6-tetramethylpiperidinol are 1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101245763A CN101367758A (en) | 2008-08-26 | 2008-08-26 | Light stabilizer 298 and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101245763A CN101367758A (en) | 2008-08-26 | 2008-08-26 | Light stabilizer 298 and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101367758A true CN101367758A (en) | 2009-02-18 |
Family
ID=40411784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101245763A Pending CN101367758A (en) | 2008-08-26 | 2008-08-26 | Light stabilizer 298 and manufacturing process thereof |
Country Status (1)
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| CN (1) | CN101367758A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104592504A (en) * | 2015-01-21 | 2015-05-06 | 苏州飞翔新材料研究院有限公司 | Method for preparing light stabilizer 622 |
-
2008
- 2008-08-26 CN CNA2008101245763A patent/CN101367758A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104592504A (en) * | 2015-01-21 | 2015-05-06 | 苏州飞翔新材料研究院有限公司 | Method for preparing light stabilizer 622 |
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Open date: 20090218 |