CN105860547A - Modification method of high-hardness low-melting-point paraffin - Google Patents
Modification method of high-hardness low-melting-point paraffin Download PDFInfo
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- CN105860547A CN105860547A CN201610251580.0A CN201610251580A CN105860547A CN 105860547 A CN105860547 A CN 105860547A CN 201610251580 A CN201610251580 A CN 201610251580A CN 105860547 A CN105860547 A CN 105860547A
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- paraffin
- tissuemat
- laurate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Cosmetics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a modification method of high-hardness low-melting-point paraffin. The modification method comprises the following steps of: placing No.58 paraffin and a modifier in a three-mouth flask, placing the three-mouth flask in an oil bath, performing a reaction for 1 to 7h at a temperature of 90 to 170 DEG C at a speed of 300 to 900r/min, after the paraffin and the modifier are completely fused, starting magnetic stirring under the nitrogen sealing condition, and carrying out fusing blending; cooling at the normal temperature until the paraffin is completely cooled and solidified. The obtained modified paraffin has the characteristics of high hardness, low melting point, good glossiness, low impurity content, good color, proper softness and the like. The preparation method disclosed by the invention is simple and easy to popularize and apply.
Description
Technical field
The present invention relates to technical field of chemical products, the method for modifying of a kind of high rigidity low melt point paraffin.
Background technology
Paraffin is that oil is through a kind of solid-state higher alkane product obtained by processing, predominantly carbon atom quantity is from the mixture of 18 to 30 linear paraffins not waited, also contain the monocycle alkane of a certain amount of isoparaffin and belt length side chain simultaneously, molecular formula is CnH2n+2, there is combustibility, lubricity, agglomerability and good water resistance, according to the difference of processing stage, paraffin wax fully refined, semi-refined paraffin wax and scale wax three kinds can be divided into.Paraffin can be widely applied to the industries such as chemicals, medicine, food, traffic.China is the country that paraffin yield is maximum in the world, but high-tech, high added value paraffin wax product are less, and the special special wax of big multipurpose needs import.Along with the development of the science and technology maked rapid progress in the world, the paraffin wax product of ordinary hard and fusing point can not meet the demand in market.
Such as, high temperature precision casting wax requires that wax has high rigidity, high intensity, little shrinkage factor, medical histopathologic slide then needs hardness paraffin wax high, low-melting, idle call heat-storing material then needs the novel heat-storing material of low temperature etc. that fusing point is less than 55 DEG C, the wax of these specific uses is all higher to hardness and toughness reguirements, and high rigidity wax is crisp, easy fracture, toughness is poor；Low melt wax, hardness is the most relatively low, and in order to meet modern market to high rigidity and the demand of the extraordinary paraffin of low melting point, therefore the exploitation to high rigidity and low melt point paraffin just seems more and more important.
Paraffin wax is the important embedding medium of application in animal vegetable tissue microtomy, is the basic material of biology, medical science, pathology and SABC etc..The paraffin wax of current domestic use is of a great variety, and high melting point paraffin is harder, cuts into slices more difficult, and pliability is not suitable for, but can cut relatively thin section；Low melt point paraffin, hardness is relatively low, and the support force of section is inadequate, it is more difficult to cut out thin slice.Therefore to easily cut into slices and the paraffin of thin slice can be cut out, it should be prepared that go out the product that melt drop temperature is relatively low and hardness is higher.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, it is provided that the method for modifying of a kind of high rigidity low melt point paraffin, solve the problem that in prior art, paraffin can not have both high rigidity and low melting point simultaneously.
To achieve these goals, technical scheme following steps:
Step a, 58# paraffin and modifying agent are placed in there-necked flask, the mass percent of 58# paraffin and modifying agent is 70-98:2-30, there-necked flask is put in oil bath, under conditions of 90-170 DEG C and 300-900r/min, treat that paraffin and modifying agent are the most melted, under the conditions of nitrogen-sealed, open magnetic agitation, through the melted mediation of 1-7h, obtain sample；
Step b, by cooling under the sample normal temperature after above-mentioned melted mediation, to the complete cooled and solidified of paraffin, i.e. obtain required modified paraffin.
Described modifying agent is Tissuemat E and laurate.
Described Tissuemat E and lauric mass percent are 1-12:1-18.
Described oil bath uses dimethicone.
The present invention uses above-mentioned technical solution be can achieve the effect that:
1, the present invention uses that modified paraffin raw material is cheap, nontoxic, operation is simple.
2, prepared modified paraffin has the advantages such as hardness is high, melt drop temperature is low, glossiness good, impurity content is few.
Detailed description of the invention
Embodiment 1
The preparation of modified paraffin: by 58# paraffin, Tissuemat E and laurate are placed in there-necked flask, 58# paraffin, the mass percent that Tissuemat E and laurate are put is, 58# paraffin: Tissuemat E: laurate=96:2:2, there-necked flask is put in oil bath dimethicone, under conditions of 110 DEG C and 300r/min, treat 58# paraffin, Tissuemat E and laurate are the most melted, magnetic agitation is opened under the conditions of nitrogen-sealed, melted mediation through 1h, it is cooled to the complete cooled and solidified of paraffin i.e. obtain modified paraffin product and measure its melt drop temperature and needle penetration, the size of needle penetration represents the height of hardness, needle penetration is the least, paraffin hardness is the highest.
A, melt drop temperature :=56.4 DEG C；
B, needle penetration 1/10mm (25 DEG C, 100g) :=14.8.
Embodiment 2
The preparation of modified paraffin: 58# paraffin, Tissuemat E and laurate are placed in there-necked flask, the mass percent that 58# paraffin, Tissuemat E and laurate are put is, 58# paraffin: Tissuemat E: laurate=94:4:2, there-necked flask is put in oil bath dimethicone, under conditions of 120 DEG C and 400r/min, treat that 58# paraffin, Tissuemat E and laurate are the most melted, magnetic agitation is opened under the conditions of nitrogen-sealed, through the melted mediation of 2h, it is cooled to the complete cooled and solidified of paraffin and i.e. obtains modified paraffin product and measure its melt drop temperature and needle penetration.
A, melt drop temperature :=57.2 DEG C；
B, needle penetration 1/10mm (25 DEG C, 100g) :=14.4.
Embodiment 3
The preparation of modified paraffin: 58# paraffin, Tissuemat E and laurate are placed in there-necked flask, the mass percent that 58# paraffin, Tissuemat E and laurate are put is, 58# paraffin: Tissuemat E: laurate=92:4:4, there-necked flask is put in oil bath dimethicone, under conditions of 130 DEG C and 500r/min, treat that 58# paraffin, Tissuemat E and laurate are the most melted, magnetic agitation is opened under the conditions of nitrogen-sealed, through the melted mediation of 3h, it is cooled to the complete cooled and solidified of paraffin and i.e. obtains modified paraffin product and measure its melt drop temperature and needle penetration.
A, melt drop temperature :=55.8. DEG C；
B, needle penetration 1/10mm (25 DEG C, 100g) :=15.2.
Embodiment 4
The preparation of modified paraffin: 58# paraffin, Tissuemat E and laurate are placed in there-necked flask, the mass percent that 58# paraffin, Tissuemat E and laurate are put is, 58# paraffin: Tissuemat E: laurate=90:6:4, there-necked flask is put in oil bath dimethicone, under conditions of 140 DEG C and 600r/min, treat that 58# paraffin, Tissuemat E and laurate are the most melted, magnetic agitation is opened under the conditions of nitrogen-sealed, through the melted mediation of 4h, it is cooled to the complete cooled and solidified of paraffin and i.e. obtains modified paraffin product and measure its melt drop temperature and needle penetration.
A, melt drop temperature :=56.8 DEG C；
B, needle penetration 1/10mm (25 DEG C, 100g) :=14.6.
Embodiment 5
The preparation of modified paraffin: 58# paraffin, Tissuemat E and laurate are placed in there-necked flask, the mass percent that 58# paraffin, Tissuemat E and laurate are put is, 58# paraffin: Tissuemat E: laurate=86:6:8, there-necked flask is put in oil bath dimethicone, under conditions of 150 DEG C and 700r/min, treat that 58# paraffin, Tissuemat E and laurate are the most melted, magnetic agitation is opened under the conditions of nitrogen-sealed, through the melted mediation of 5h, it is cooled to the complete cooled and solidified of paraffin and i.e. obtains modified paraffin product and measure its melt drop temperature and needle penetration.
A, melt drop temperature :=54.6 DEG C；
B, needle penetration 1/10mm (25 DEG C, 100g) :=15.6.
Embodiment 6
The preparation of modified paraffin: 58# paraffin, Tissuemat E and laurate are placed in there-necked flask, the mass percent that 58# paraffin, Tissuemat E and laurate are put is, 58# paraffin: Tissuemat E: laurate=84:8:8, there-necked flask is put in oil bath dimethicone, under conditions of 160 DEG C and 800r/min, treat that 58# paraffin, Tissuemat E and laurate are the most melted, magnetic agitation is opened under the conditions of nitrogen-sealed, through the melted mediation of 6h, it is cooled to the complete cooled and solidified of paraffin and i.e. obtains modified paraffin product and measure its melt drop temperature and needle penetration.
A, melt drop temperature :=55.2 DEG C；
B, needle penetration 1/10mm (25 DEG C, 100g) :=15.3.
Embodiment 7
The preparation of modified paraffin: 58# paraffin, Tissuemat E and laurate are placed in there-necked flask, the mass percent that 58# paraffin, Tissuemat E and laurate are put is, 58# paraffin: Tissuemat E: laurate=80:8:12, there-necked flask is put in oil bath dimethicone, under conditions of 170 DEG C and 900r/min, treat that 58# paraffin, Tissuemat E and laurate are the most melted, magnetic agitation is opened under the conditions of nitrogen-sealed, through the melted mediation of 7h, it is cooled to the complete cooled and solidified of paraffin and i.e. obtains modified paraffin product and measure its melt drop temperature and needle penetration.
A, melt drop temperature :=54.2 DEG C；
B, needle penetration 1/10mm (25 DEG C, 100g) :=15.7.
Embodiment 8
The preparation of modified paraffin: 58# paraffin, Tissuemat E and laurate are placed in there-necked flask, the mass percent that 58# paraffin, Tissuemat E and laurate are put is, 58# paraffin: Tissuemat E: laurate=70:12:18, there-necked flask is put in oil bath dimethicone, reacting 7h under conditions of 90 DEG C and 900r/min, cooling i.e. obtains modified paraffin product and measures its melt drop temperature and needle penetration.
Embodiment 9
The preparation of modified paraffin: 58# paraffin, Tissuemat E and laurate are placed in there-necked flask, the mass percent that 58# paraffin, Tissuemat E and laurate are put is, 58# paraffin: Tissuemat E: laurate=98:1:1, there-necked flask is put in oil bath dimethicone, reacting 4h under conditions of 100 DEG C and 600r/min, cooling i.e. obtains modified paraffin product and measures its melt drop temperature and needle penetration.
Modified waxes glossiness prepared by the present invention is good, impurity content is few and freezing is the most easy to crack.
Claims (4)
1. the method for modifying of a high rigidity low melt point paraffin, it is characterised in that comprise the steps:
Step a, 58# paraffin and modifying agent are placed in there-necked flask, the mass percent of 58# paraffin and modifying agent is 70-98:2-30, there-necked flask is put in oil bath, under conditions of 90-170 DEG C and 300-900r/min, treat that paraffin and modifying agent are the most melted, under the conditions of nitrogen-sealed, open magnetic agitation, through the melted mediation of 1-7h, obtain sample；
Step b, by cooling under the sample normal temperature after above-mentioned melted mediation, to the complete cooled and solidified of paraffin, i.e. obtain required modified paraffin.
The method of modifying of a kind of high rigidity low melt point paraffin the most according to claim 1, it is characterised in that described modifying agent is Tissuemat E and laurate.
The method of modifying of a kind of high rigidity low melt point paraffin the most according to claim 2, it is characterised in that described Tissuemat E and lauric mass percent are 1-12:1-18.
The method of modifying of a kind of high rigidity low melt point paraffin the most according to claim 1, it is characterised in that described oil bath uses dimethicone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610251580.0A CN105860547A (en) | 2016-04-21 | 2016-04-21 | Modification method of high-hardness low-melting-point paraffin |
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| CN201610251580.0A CN105860547A (en) | 2016-04-21 | 2016-04-21 | Modification method of high-hardness low-melting-point paraffin |
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| CN105860547A true CN105860547A (en) | 2016-08-17 |
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| CN201610251580.0A Pending CN105860547A (en) | 2016-04-21 | 2016-04-21 | Modification method of high-hardness low-melting-point paraffin |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570234A (en) * | 2017-03-09 | 2018-09-25 | 南通亚泰蜡业工艺品有限公司 | A kind of modified paraffin and preparation method thereof for electric candle |
| CN113897067A (en) * | 2021-06-28 | 2022-01-07 | 南京天诗新材料科技有限公司 | Preparation method of medical slice wax material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1472255A (en) * | 2002-07-30 | 2004-02-04 | 中国石油化工股份有限公司 | Low-melting heat sensitive wax |
-
2016
- 2016-04-21 CN CN201610251580.0A patent/CN105860547A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1472255A (en) * | 2002-07-30 | 2004-02-04 | 中国石油化工股份有限公司 | Low-melting heat sensitive wax |
Non-Patent Citations (2)
| Title |
|---|
| 刘慧珍等: "低熔点高硬度特种蜡的研究与开发", 《石油炼制与化工》 * |
| 刘慧珍等: "医用切片石蜡的改性工艺研究", 《应用化工》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570234A (en) * | 2017-03-09 | 2018-09-25 | 南通亚泰蜡业工艺品有限公司 | A kind of modified paraffin and preparation method thereof for electric candle |
| CN113897067A (en) * | 2021-06-28 | 2022-01-07 | 南京天诗新材料科技有限公司 | Preparation method of medical slice wax material |
| CN113897067B (en) * | 2021-06-28 | 2023-09-12 | 南京天诗新材料科技有限公司 | Preparation method of medical slice wax material |
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Application publication date: 20160817 |
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