CN102167828A - Preparation method of R-122-based episulfide resin - Google Patents
Preparation method of R-122-based episulfide resin Download PDFInfo
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- CN102167828A CN102167828A CN2010106220651A CN201010622065A CN102167828A CN 102167828 A CN102167828 A CN 102167828A CN 2010106220651 A CN2010106220651 A CN 2010106220651A CN 201010622065 A CN201010622065 A CN 201010622065A CN 102167828 A CN102167828 A CN 102167828A
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Abstract
The invention provides a preparation method of R-122-based episulfide resin. The ratio of the weight (g) of R-122 epoxy resin to the volume (mL) of ethanol is 1:2 and the mass concentration of ethanol is 95%. The preparation method comprises the following steps: adding the raw materials in a three-necked container in turn which is placed in a thermostatic water bath, stirring to ensure that R-122 epoxy resin is completely dissolved, adding catalyst, introducing N2, evenly dropping a thiourea solution in 3 hours to react under uniform stirring, wherein the ratio of the weight (g) of thiourea to the volume (mL) of water is 1:10, the molar ratio of R-122 epoxy resin to thiourea is 3:(1-7):1, the reaction temperature is controlled to 30-70 DEG C and the response time is 1-5 hours and the reaction is protected by N2; and filtering the reaction product, rinsing the obtained solid product, and recrystallizing to obtain the target product, wherein the melting point of the target product is 135-145 DEG C, which is 40 DEG C lower than the melting point of R-122 epoxy resin. The catalyst has low pollution, the cost performance of the product is low, the reaction temperature is low, the reaction time is short and the yield of the product is up to 70%.
Description
Technical field
The present invention relates to the method for the synthetic R-122 basic ring sulphur resin of a kind of R-122 of utilization Resins, epoxy.
Background technology
Resins, epoxy has been widely applied to every field, because episulfide resin is similar to epoxy resin structural, therefore also has the good chemical proofing of Resins, epoxy, cohesiveness, thermotolerance, advantages such as mechanical property and curing stability.Episulfide resin is compared with Resins, epoxy, also has the advantage of self:
1, the epithio ring has higher active open loop easily;
2, the more stable easier initiated polymerization of sulfonium ion after the open loop, and the speed that responds is fast;
3, epithio functional group can also same copper, metal such as iron reacts, and adhesive property is higher than Resins, epoxy;
Therefore episulfide resin is more suitable for as low temperature fast setting tackiness agent, as tamanori, seal gum, coating, laminating material, caulk compound, casting glue etc.
Episulfide resin is synthetic to reach applied research since nineteen seventies.The preparation method of episulfide compounds has 1), cyclic ester and rhodanide reaction also can prepare episulfide compounds, resultant can come out by fractionation by distillation; 2), in polar solvent, hydroxy alkyl compound can generate corresponding isothiourea complex cation alite with thiocarbamide reaction, change into episulfide compounds then under the effect of alkali.3) Resins, epoxy and sulfide carry out O and S exchange preparation episulfide resin, are present most widely used methods.
The episulfide resin of preparation has both at home and abroad at present: .K.wehnsiung et al. has reported the preparation of dihydroxyphenyl propane class epoxy/episulfide resin, and propose it and can be applied to room temperature fast-curing [KeisukeC, KazuoS, Masahiorl, et al.Novel Rapid one Cuer Adhesives for Low TemperatureUsing Thiiarne Compound[J] .Jounral of Applied Polymer Seienee, 2001,82 (12): 2,953 one 2957.].Studied Resins, epoxy F51 episulfide resin and N robot systems such as Ma Song, N-dimethyl benzylamine curing system [Ma Song opens army. the research [J] of fast curable epoxy-episulfide resin system. and polymer material science and engineering, 1990,1 (1): 29-33]; Keisuke Chino et al. has synthesized Bisphenol F type episulfide resin, and the low-temperature curing performance and adhesive property [the Keisuke C of Bisphenol F type epoxy/episulfide resin and aliphatic cyclic amine curing system have been studied, Kazuo S, Masahiro l, et al.Novel Rapid-Cure Adhesivesfor Low Temperature Using Thiirane Compound[J] .Journal of AppliedPolymer Science, 2001,82 (12): 2953-2957.].
R-122 Resins, epoxy is the cycloaliphatic epoxy resin of a kind of heat resistance and excellent combination property, but because its fusing point height (186 ℃) causes the solidification process complexity.
Summary of the invention
Have the fusing point height in order to solve prior art, cause the solidification process complicated problems, the present invention has synthesized the R-122 episulfide resin by R-122, has reduced the fusing point of resin, solves the problem of its curing aspect.
A kind of preparation method of R-122 basic ring sulphur resin, step is as follows:
Quality g according to R-122 Resins, epoxy: alcoholic acid volume mL ratio is 1: 2, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully, catalyzer is added in the system, feeds N
2Simultaneously with thiocarbamide quality g: the volume mL ratio of water is that 1: 10 thiourea solution is in 3h evenly in the dropwise reaction system, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 3: 1-7: 1, optimum ratio is 5: 1, enter step of reaction after dripping end, temperature of reaction is controlled at 30-70 ℃, and preferable reaction temperature is 40 ℃; Reaction 1-5h, the preferred reaction time is 3h, at the uniform velocity stirs omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is a kind of in maleic anhydride, oxalic acid, diacetyl oxide and the beta-cyclodextrin; The add-on of catalyzer is the 0.06-0.1% of R-122 Resins, epoxy quality, and preferable amount is 0.08%.
Products therefrom is carried out IR, H-NMR to be characterized.
Product characterizes 910-917cm in the shown bands of a spectrum of product with the Fourier transform infrared spectroscopy test of ArATR-360 type U.S. Buddhist nun high-tensile strength company through IR
-1Bands of a spectrum are that epoxy group(ing) absorbs generation, 917cm
-1The place is oxirane ring absorption peak, 616cm
-1The place is the absorption peak of epithio ring.691cm
-1Absorption peak belong to the absorption peak of the stretching vibration oxirane ring of C-S-C key.
H-NMR (solvent is MeOD, and frequency is 400MHz) etc. is characterized by target product.
H-NMR characterization result: δ=3.632-3.621 is the chemical shift of the proton (H) on the oxirane ring; δ=3.559-3.553, δ=3.448-3.439 and δ=3.400-3.376 are proton (H) chemical shift on the epithio ring; δ=2.746-2.736 and δ=2.666-2.635 for five-ring that the epithio ring links to each other on be connected with the chemical shift of 2 H protons (H); δ=2.569-2.512 is the chemical shift of the proton (H) on the six-ring; δ=2.027-2.012, δ=1.988-1.973 and δ=1.486-1.462 are the chemical shift of the proton (H) of five-ring and six-ring intersection; δ=1.939-1.879 and δ=0.953-0.929 are the chemical shift of six-ring inner proton (H).Products therefrom is the mixture of R-122 basic ring sulphur resin and R-122 basic ring oxygen-episulfide resin, and the ratio of two kinds of materials is 1: 1.
The fusing point of the R-122 basic ring sulphur resin that is recorded by the accurate micro melting point apparatus of X-6 (sky, Beijing becomes the Ward analytical instrument) is 135 ℃-145 ℃.
Beneficial effect: (1) R-122 basic ring of the present invention sulphur resin and R-122 Resins, epoxy is the specific activity height mutually, fusing point is 135 ℃-145 ℃, fusing point is lower 40 ℃ than R-122 Resins, epoxy, and is preferably as low temperature fast setting material, especially cooperates industry Resins, epoxy range of application commonly used wider.(2) the inventive method is compared with the synthetic method of other episulfide resin and is had the little cost performance height of catalyst contamination that technology is simple, adopt, temperature of reaction is low, reaction times is short, the product purity height, the yield of R-122 basic ring sulphur resin is up to 70%, can be widely used in the synthetic and modification of other resin.
Embodiment
Embodiment 1: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 5: 1 to the thiourea solution that adds 9.29g thiocarbamide and 92.9mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 40 ℃; Reaction times is 3h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is that the add-on of maleic anhydride catalyst is 0.012g, is 0.06% of R-122 Resins, epoxy quality.
Embodiment 2: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 7: 1 to the thiourea solution that adds 13g thiocarbamide and 130mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 30 ℃; Reaction times is 5h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is that the add-on of maleic anhydride catalyst is that 0.016g is 0.08% of a R-122 Resins, epoxy quality.
Embodiment 3: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 3: 1 to the thiourea solution that adds 5.57g thiocarbamide and 55.7mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 70 ℃; Reaction times is 2h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is that 0.02g is 0.1% of a R-122 Resins, epoxy quality for the maleic anhydride add-on.
Embodiment 4: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 3: 1 to the thiourea solution that adds 5.57g thiocarbamide and 55.7mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 40 ℃; Reaction times is 3h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is that the add-on of oxalic acid catalyzer is that 0.012g is 0.06% of a R-122 Resins, epoxy quality.
Embodiment 5: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 5: 1 to the thiourea solution that adds 9.29g thiocarbamide and 92.9mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 30 ℃; Reaction times is 5h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reactant filters, and with the washing of gained solid product, recrystallization gets the white crystals thing.
Used catalyzer is that the add-on of oxalic acid catalyzer is that 0.016g is 0.08% of a R-122 Resins, epoxy quality.
Used N
2The flow of gas is 20-50mL/min.
Embodiment 6: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 7: 1 to the thiourea solution that adds 13g thiocarbamide and 130mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 70 ℃; Reaction times is 2h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is that 0.02g is 0.1% of a R-122 Resins, epoxy quality for the oxalic acid add-on.
Embodiment 7: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 7: 1 to the thiourea solution that adds 13g thiocarbamide and 130mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 40 ℃; Reaction times is 3h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is that the add-on of diacetyl oxide catalyzer is that 0.012g is 0.06% of a R-122 Resins, epoxy quality.
Embodiment 8: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 3: 1 to the thiourea solution that adds 5.57g thiocarbamide and 55.70mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 30 ℃; Reaction times is 5h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reactant filters, and with the washing of gained solid product, recrystallization gets the white crystals thing.
Used catalyzer is that the add-on of diacetyl oxide catalyzer is that 0.016g is 0.08% of a R-122 Resins, epoxy quality.
Embodiment 9: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 5: 1 to the thiourea solution that adds 9.29g thiocarbamide and 92.9mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 70 ℃; Reaction times is 2h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is that 0.02g is 0.1% of a R-122 Resins, epoxy quality for the diacetyl oxide add-on.
Embodiment 10: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 3: 1 to the thiourea solution that adds 5.57g thiocarbamide and 55.7mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 40 ℃; Reaction times is 3h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is that the add-on of beta-cyclodextrin catalyzer is that 0.012g is 0.06% of a R-122 Resins, epoxy quality.
Embodiment 11: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 5: 1 to the thiourea solution that adds 9.29g thiocarbamide and 92.9mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 30 ℃; Reaction times is 5h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is that the add-on of beta-cyclodextrin catalyzer is that 0.016g is 0.08% of a R-122 Resins, epoxy quality.
Embodiment 12: get R-122 Resins, epoxy 20g, and ethanol 40mL, described alcoholic acid mass concentration is 95%, joins three mouthfuls of containers that place in the thermostat water bath in turn, is stirred to R-122 Resins, epoxy and dissolves fully.Catalyzer is added in the system, feeds N
2Evenly in the dropwise reaction system, at this moment, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 7: 1 to the thiourea solution that adds 13g thiocarbamide and 130mL water simultaneously in 3h.Formally enter step of reaction after dripping end, temperature of reaction is controlled at 70 ℃; Reaction times is 2h.At the uniform velocity stir omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin; This episulfide resin is the white crystals thing;
Used catalyzer is that 0.02g is 0.1% of a R-122 Resins, epoxy quality for the beta-cyclodextrin add-on.
Claims (5)
1. the preparation method of a R-122 basic ring sulphur resin, it is characterized in that step is as follows: the quality g of R-122 Resins, epoxy: alcoholic acid volume mL ratio is 1: 2, described alcoholic acid mass concentration is 95%, join three mouthfuls of containers that place in the thermostat water bath in turn, being stirred to R-122 Resins, epoxy dissolves fully, catalyzer is added in the system, feeds N
2Simultaneously with thiocarbamide quality g: the volume mL ratio of water is that 1: 10 thiourea solution is in 3h evenly in the dropwise reaction system, the mol ratio of R-122 Resins, epoxy and thiocarbamide is 3: 1-7: 1, enter step of reaction after dripping end, temperature of reaction is controlled at 30-70 ℃, reaction times 1-5h at the uniform velocity stirs omnidistance N in the reaction process
2Protection, reaction product is filtered, and with the washing of gained solid product, recrystallization obtains R-122 basic ring sulphur resin;
Used catalyzer is a kind of in maleic anhydride, oxalic acid, diacetyl oxide and the beta-cyclodextrin; The add-on of catalyzer is the 0.06-0.1% of R-122 Resins, epoxy quality.
2. the preparation method of a kind of R-122 basic ring sulphur resin as claimed in claim 1 is characterized in that the mol ratio of described R-122 Resins, epoxy and thiocarbamide is 5: 1.
3. the preparation method of a kind of R-122 basic ring sulphur resin as claimed in claim 1 is characterized in that described temperature of reaction is controlled at 40 ℃.
4. the preparation method of a kind of R-122 basic ring sulphur resin as claimed in claim 1 is characterized in that the described reaction times is 3h.
5. the preparation method of a kind of R-122 basic ring sulphur resin as claimed in claim 1 is characterized in that the add-on of described catalyzer is 0.08%.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103254168A (en) * | 2013-04-01 | 2013-08-21 | 常州大学 | Plant oil based episulfide light-cured resin and its preparation method |
| JP2017149903A (en) * | 2016-02-26 | 2017-08-31 | 積水化学工業株式会社 | Curable resin composition |
| CN107129782A (en) * | 2017-04-05 | 2017-09-05 | 芜湖瀚邦新材料科技有限公司 | A kind of good epoxy resin adhesive of smear |
| CN108654575A (en) * | 2018-06-14 | 2018-10-16 | 何丽丽 | A kind of preparation and its application of magnetism episulfide resin functional material |
| CN109456715A (en) * | 2018-08-30 | 2019-03-12 | 宁波吉象塑胶科技股份有限公司 | Distich adhesive tape |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103254168A (en) * | 2013-04-01 | 2013-08-21 | 常州大学 | Plant oil based episulfide light-cured resin and its preparation method |
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| JP2017149903A (en) * | 2016-02-26 | 2017-08-31 | 積水化学工業株式会社 | Curable resin composition |
| CN107129782A (en) * | 2017-04-05 | 2017-09-05 | 芜湖瀚邦新材料科技有限公司 | A kind of good epoxy resin adhesive of smear |
| CN108654575A (en) * | 2018-06-14 | 2018-10-16 | 何丽丽 | A kind of preparation and its application of magnetism episulfide resin functional material |
| CN108654575B (en) * | 2018-06-14 | 2021-03-12 | 华玻视讯(珠海)科技有限公司 | Preparation and application of magnetic episulfide resin functional material |
| CN109456715A (en) * | 2018-08-30 | 2019-03-12 | 宁波吉象塑胶科技股份有限公司 | Distich adhesive tape |
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| CN102167828B (en) | 2012-10-10 |
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