CN115612076A - Medical PVC sheet lubricant and preparation process thereof - Google Patents
Medical PVC sheet lubricant and preparation process thereof Download PDFInfo
- Publication number
- CN115612076A CN115612076A CN202211260748.6A CN202211260748A CN115612076A CN 115612076 A CN115612076 A CN 115612076A CN 202211260748 A CN202211260748 A CN 202211260748A CN 115612076 A CN115612076 A CN 115612076A
- Authority
- CN
- China
- Prior art keywords
- lubricant
- pvc sheet
- medical pvc
- raw materials
- stearic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000314 lubricant Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 68
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 21
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 21
- 239000001361 adipic acid Substances 0.000 claims abstract description 21
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 21
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000008117 stearic acid Substances 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 230000032050 esterification Effects 0.000 claims description 3
- 238000005886 esterification reaction Methods 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 239000012752 auxiliary agent Substances 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000004610 Internal Lubricant Substances 0.000 description 21
- 239000004605 External Lubricant Substances 0.000 description 19
- 239000004014 plasticizer Substances 0.000 description 5
- 239000003381 stabilizer Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Natural products OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004597 plastic additive Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/46—Polyesters chemically modified by esterification
- C08G63/48—Polyesters chemically modified by esterification by unsaturated higher fatty oils or their acids; by resin acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses a medical PVC sheet lubricant and a preparation process thereof, and relates to the technology of PVC sheet production auxiliary agents, wherein the main component of the medical PVC sheet lubricant comprises the following raw materials: 60-75% of stearic acid; 10-20% of ethylene glycol; 10-20% of adipic acid. Compared with the prior art, the raw materials are simpler, are mature products, are convenient for batch purchase, and are also favorable for controlling the proportion of each component in the production process, so that the process difficulty is reduced, and the cost is reduced. The PVC product produced by the lubricant has better transparency, and the cost of the medical PVC sheet is reduced.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of plastic additive engineering, and particularly relates to a PVC lubricant.
[ background of the invention ]
In the production process of the medical PVC sheet, various auxiliary agents are added to change the chemical properties of the PVC so as to enable the product to meet the requirements on the physical and chemical properties of the medical PVC sheet, and the chemical raw materials mainly comprise a plasticizer, a stabilizer, a reinforcing agent, an external lubricant, an internal lubricant and the like.
The external lubricant and the internal lubricant are both lubricants, and the internal lubricant and the external lubricant are mixed and used in the prior art.
The applicant has conducted long-term studies on both internal and external lubricants, with particular reference to the related patents that the applicant has filed. Aiming at the problem that the total usage amount of the lubricant is large when the internal lubricant and the external lubricant are mixed for use at present (although the usage proportion is low as an auxiliary agent, the total yield of the PVC sheet is large, and the total usage amount of the lubricant is large), the cost reduction of the medical PVC sheet is limited to a certain extent.
[ summary of the invention ]
Aiming at the defects in the prior art, the technical problem to be solved by the invention is to provide the medical PVC sheet lubricant, so that the cost is reduced, and the medical PVC sheet lubricant is beneficial to improving various performances of the medical PVC sheet.
In order to solve the technical problems, the invention adopts the following technical scheme:
in one aspect, the invention provides a medical PVC sheet lubricant, which comprises a main component,
the main component comprises the following raw materials:
60-75% of stearic acid;
10-20% of ethylene glycol;
10-20% of adipic acid.
Preferably, the main component consists of the following raw materials:
70% of stearic acid;
15% of ethylene glycol;
15 percent of adipic acid.
Preferably, the main component consists of the following raw materials:
60% of stearic acid;
20% of ethylene glycol;
20 percent of adipic acid.
Preferably, the main component consists of the following raw materials:
75% of stearic acid;
13% of ethylene glycol;
12 percent of adipic acid.
On the other hand, the invention also provides a preparation process of the medical PVC sheet lubricant, which comprises the steps of firstly mixing ethylene glycol and adipic acid according to a proportion; then adding stearic acid according to a proportion for esterification; then polymerizing at 160-200 ℃, vacuum dealcoholizing at 200-240 ℃ after polymerization, cooling and slicing to obtain the lubricant.
In addition, the invention also provides a medical PVC sheet, and the lubricant is added in the production process.
According to the technical scheme, the main components are only stearic acid, glycol and adipic acid, and compared with the prior art, the main components are simpler in raw materials, are mature products, are convenient to purchase in batches, are beneficial to controlling the proportion of each component in the production process, and reduce the process difficulty, so that the cost is reduced.
Ethylene glycol can react with adipic acid and stearic acid to form esters, which provide some of the properties of current external lubricants; and the glycol is also used as the main raw material of the internal lubricant in the prior art, so the applicant also unexpectedly finds that the lubricant prepared by adding the glycol also has some properties of the internal lubricant. Finally, as a new lubricant, the lubricant has the performance of both an external lubricant and an internal lubricant, can be used for replacing the mixture of the internal lubricant and the external lubricant by applying the lubricant prepared by the invention, namely, the internal lubricant and the external lubricant do not need to be added simultaneously, and the using amount of the lubricant is less than that of the lubricant added with the internal lubricant and the external lubricant simultaneously, thereby reducing the cost of the medical PVC sheet.
The lubricant is a breakthrough innovative lubricant, subverts the traditional method that an external lubricant and an internal lubricant must be added simultaneously in the production process of the traditional medical PVC sheet, and has important significance.
In addition, the lubricant also has the performances of a plasticizer and a stabilizer, so that the using amount of the stabilizer in the production process of the medical PVC sheet can be correspondingly reduced, the using amount of the plasticizer can be reduced, and the transparency of the prepared PVC sheet can be increased.
Therefore, the PVC product produced by the lubricant has better transparency, and the cost of the medical PVC sheet is reduced.
These features and advantages of the present invention will be disclosed in more detail in the following detailed description of the invention.
[ detailed description ] A
The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
It will be appreciated by those skilled in the art that features from the examples and embodiments described below may be combined with each other without conflict.
Example one
The medical PVC sheet lubricant comprises a main component, wherein the main component comprises the following raw materials:
60-75% of stearic acid;
10-20% of ethylene glycol;
10-20% of adipic acid.
The concrete examples are as follows, and the main components consist of the following raw materials:
70% of stearic acid;
15% of ethylene glycol;
15 percent of adipic acid.
The main component comprises the following raw materials:
60% of stearic acid;
20% of ethylene glycol;
and 20 percent of adipic acid.
The main component comprises the following raw materials:
75% of stearic acid;
13% of ethylene glycol;
12 percent of adipic acid.
It is understood that the content of the raw materials in the main component can be adjusted according to the need, and is not exemplified here.
It is understood that corresponding auxiliary agents can be added to the lubricant raw material of the invention on the basis of the reference of the existing compositions of the external lubricant and the internal lubricant raw material.
Example two
The preparation process of the medical PVC sheet lubricant comprises the steps of preparing raw materials according to the corresponding proportion of the lubricant in the embodiment I, and firstly mixing ethylene glycol and adipic acid according to the proportion; then adding stearic acid according to a proportion for esterification; then polymerizing at 160-200 deg.C (such as 160 deg.C, 180 deg.C, 200 deg.C), vacuum dealcoholizing at 200-240 deg.C (such as 200 deg.C, 220 deg.C, 240 deg.C), cooling, and slicing to obtain lubricant.
It will be appreciated that, on the basis of reference to the existing external lubricant, internal lubricant preparation processes, corresponding process parameters, such as temperature, can also be set during the preparation process of the present invention. Known catalysts can also be added during the production process.
According to the technical scheme, the main components of the stearic acid, the ethylene glycol and the adipic acid are only stearic acid, ethylene glycol and adipic acid, compared with the prior art, the raw materials are simpler, are mature products, are convenient to purchase in batches, are beneficial to controlling the proportion of each component in the production process, and reduce the process difficulty, so that the cost is reduced.
Ethylene glycol can react with adipic acid and stearic acid to form esters, which provide some of the properties of current external lubricants; and the glycol is also used as the main raw material of the internal lubricant in the prior art, so that the lubricant prepared by adding the glycol also has some properties of the internal lubricant. Finally, as a new lubricant, the lubricant has the performance of both the external lubricant and the internal lubricant,
EXAMPLE III
The medical PVC sheet is added with the lubricant described in the first embodiment in the production process.
At present, the total amount of the internal lubricant and the external lubricant added in the production process of the medical PVC sheet accounts for 0.6 to 0.8 percent of the total amount of the production raw materials of the medical PVC sheet. After the lubricant is used, the general dosage of the lubricant accounts for 0.4 to 0.6 percent of the total amount of the medical PVC sheet production raw materials. Therefore, the lubricant prepared by the application of the invention can be used instead of the mixture of the internal lubricant and the external lubricant, namely, the internal lubricant and the external lubricant do not need to be added simultaneously, and the dosage is less than that of the internal lubricant and the external lubricant which are added simultaneously, thereby reducing the cost of the medical PVC sheet.
In addition, the lubricant also has the performances of a plasticizer and a stabilizer, so that the using amount of the stabilizer in the production process of the medical PVC sheet can be correspondingly reduced, the using amount of the plasticizer can be reduced, and the transparency of the prepared PVC sheet can be increased.
Claims (6)
1. The medical PVC sheet lubricant comprises a main component, and is characterized in that the main component consists of the following raw materials:
60-75% of stearic acid;
10-20% of ethylene glycol;
10-20% of adipic acid.
2. The medical PVC sheet lubricant according to claim 1, wherein the main component is composed of the following raw materials:
70% of stearic acid;
15% of ethylene glycol;
15 percent of adipic acid.
3. The medical PVC sheet lubricant according to claim 1, wherein the main component is composed of the following raw materials:
60% of stearic acid;
20% of ethylene glycol;
20 percent of adipic acid.
4. The medical PVC sheet lubricant according to claim 1, wherein the main component is composed of the following raw materials:
75% of stearic acid;
13% of ethylene glycol;
12 percent of adipic acid.
5. The preparation process of the medical PVC sheet lubricant is characterized in that the lubricant is prepared according to the raw materials with the corresponding proportion of any one of claims 1 to 4, and firstly, the glycol and the adipic acid are mixed according to the proportion; then adding stearic acid according to a proportion for esterification; then polymerizing at 160-200 ℃, vacuum dealcoholizing at 200-240 ℃ after polymerization, cooling and slicing to obtain the lubricant.
6. PVC sheet for medical use, characterized in that the lubricant according to any of claims 1 to 4 is added during the production process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260748.6A CN115612076A (en) | 2022-10-14 | 2022-10-14 | Medical PVC sheet lubricant and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260748.6A CN115612076A (en) | 2022-10-14 | 2022-10-14 | Medical PVC sheet lubricant and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115612076A true CN115612076A (en) | 2023-01-17 |
Family
ID=84863224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211260748.6A Pending CN115612076A (en) | 2022-10-14 | 2022-10-14 | Medical PVC sheet lubricant and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115612076A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB797270A (en) * | 1956-04-09 | 1958-06-25 | Us Rubber Co | Improvements in transesterification catalysts |
| GB1105620A (en) * | 1966-04-04 | 1968-03-06 | Ici Ltd | New polyesters |
| US4122057A (en) * | 1974-09-03 | 1978-10-24 | Emery Industries, Inc. | Mixed-terminated polyester plasticizers |
| CN102250329A (en) * | 2011-06-01 | 2011-11-23 | 夏森林 | Production technology of PVC external lubricant |
| WO2022004320A1 (en) * | 2020-07-02 | 2022-01-06 | Dic株式会社 | Vinyl chloride resin plasticizer, vinyl chloride resin composition, and molded article thereof |
-
2022
- 2022-10-14 CN CN202211260748.6A patent/CN115612076A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB797270A (en) * | 1956-04-09 | 1958-06-25 | Us Rubber Co | Improvements in transesterification catalysts |
| GB1105620A (en) * | 1966-04-04 | 1968-03-06 | Ici Ltd | New polyesters |
| US4122057A (en) * | 1974-09-03 | 1978-10-24 | Emery Industries, Inc. | Mixed-terminated polyester plasticizers |
| CN102250329A (en) * | 2011-06-01 | 2011-11-23 | 夏森林 | Production technology of PVC external lubricant |
| WO2022004320A1 (en) * | 2020-07-02 | 2022-01-06 | Dic株式会社 | Vinyl chloride resin plasticizer, vinyl chloride resin composition, and molded article thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230117 |