CN108815585B - Water-soluble lubricating composition and quick-drying water-soluble lubricant - Google Patents
Water-soluble lubricating composition and quick-drying water-soluble lubricant Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/06—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2400/00—Materials characterised by their function or physical properties
- A61L2400/10—Materials for lubricating medical devices
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Abstract
The present invention provides a water-soluble lubricating composition and a quick-drying water-soluble lubricant. In particular, the present invention provides a water-soluble lubricating composition comprising, by total weight: 10-90% by weight of a water-soluble polyester or polyether having a hydrophilic-hydrophobic balance (HLB) greater than or equal to 7; 0.2 to 10 wt% of a surfactant; and 1-89.8 wt% solvent. The water-soluble lubricating composition and the quick-drying water-soluble lubricant obtained according to the technical scheme of the invention have excellent complete water solubility while providing good lubricity.
Description
Technical Field
The present invention relates to the field of lubricants for medical applications, and more particularly, the present invention provides a water soluble lubricating composition and a quick-drying water soluble lubricant.
Background
Currently, lubricants are widely used in the medical field. For example, many medical devices can cause varying degrees of mechanical damage to the body's organs when they reach deep within the body, and lubricants can minimize the damage of the device to body tissues, mucous membranes, and the like. Currently, water-soluble lubricants, silicone lubricants, petroleum lubricants, oil lubricants, and the like are mainly used as lubricants in the medical field. Among these lubricants, water-soluble lubricants are the most desirable and safe medical lubricants, which are non-toxic, sterile, colorless, odorless, non-greasy, and non-irritating, and therefore widely used. However, most of the water-soluble lubricant products on the market do not reach the degree of complete water solubility, and delamination, sedimentation or phase separation can occur after a long-term storage.
Therefore, it is important to develop a medical lubricant having excellent complete water solubility while providing good lubricity.
Disclosure of Invention
Starting from the technical problems set forth above, it is an object of the present invention to provide a water-soluble lubricating composition and a quick-drying type water-soluble lubricant which provide good lubricity while having excellent full water solubility.
The present inventors have made intensive studies and completed the present invention.
According to one aspect of the present invention there is provided a water-soluble lubricating composition comprising, by total weight:
10-90% by weight of a water-soluble polyester or polyether having a hydrophilic-hydrophobic balance (HLB) greater than or equal to 7;
0.2 to 10 wt% of a surfactant; and
1-89.8 wt% of a solvent.
Preferably, the water-soluble polyester or water-soluble polyether has a weight average molecular weight in the range of 200 to 5000.
Preferably, the water-soluble polyester is polyoxyethylene fatty acid ester.
Preferably, the polyoxyethylene fatty acid ester has the formula RCOO (CH) 2 CH 2 O) n H, wherein R represents an alkyl group having 8 to 14 carbon atoms, and n represents an integer of 9 to 14.
Preferably, the water-soluble polyether is alkyl polyoxyethylene oxypropylene ether.
Preferably, the alkylpolyoxyethylene oxypropylene ether has the formula R' -O- (CH) 2 CH 2 O) a (C 3 H 6 O) b H, wherein R' represents an alkyl group having 4 to 16 carbon atoms, a represents an integer of 4 to 20, and b represents an integer of 1 to 10.
Preferably, the surfactant is sorbitan monooleate.
Preferably, the solvent is selected from ethanol, isopropanol or mixtures thereof.
According to another aspect of the present invention, there is provided a quick-drying water-soluble lubricant comprising a quick-drying water-soluble lubricating composition as described above and a propellant in a weight ratio of 1:1 to 9: 1.
Preferably, the propellant is liquefied petroleum gas.
Compared with the prior art in the field, the invention has the advantages that: the water-soluble lubricating composition and the quick-drying type water-soluble lubricant according to the present invention have good lubricity while having excellent complete water solubility.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments. It will be appreciated that other embodiments are contemplated and may be made without departing from the scope or spirit of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense.
Unless otherwise indicated, all numbers expressing feature sizes, quantities, and physical and chemical properties used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that can be suitably varied by those skilled in the art in seeking to obtain the desired properties utilizing the teachings disclosed herein. The use of numerical ranges by endpoints includes all numbers within that range and any range within that range, for example, 1 to 5 includes 1, 1.1, 1.3, 1.5, 2, 2.75, 3, 3.80, 4, and 5, and the like.
According to one aspect of the present invention there is provided a water-soluble lubricating composition comprising, by total weight:
10-90% by weight of a water-soluble polyester or polyether having a hydrophilic-hydrophobic balance (HLB) greater than or equal to 7;
0.2 to 10 wt% of a surfactant; and
1-89.8 wt% of a solvent.
The technical scheme of the invention adopts water-soluble polyester or water-soluble polyether as an essential lubricating component.
The "hydrophilic-hydrophobic balance (HLB)" as referred to in this application has the generally well-known meaning in the chemical art. That is, the hydrophilic-hydrophobic balance (HLB) is also called the degree of water-oil, and is used to illustrate the balance relationship between hydrophilic groups and lipophilic groups in a surfactant molecule. The degree of lipophilicity or hydrophilicity of a surfactant can be judged by the magnitude of the HLB value, with a greater HLB value indicating greater hydrophilicity and a lesser HLB value indicating greater lipophilicity.
According to the aspect of the present invention, in order to achieve excellent complete water solubility while achieving good lubricating performance, the water-soluble polyester or water-soluble polyether has a hydrophilic-hydrophobic balance (HLB) of 7 or more, preferably 8 or more, more preferably 11 or more, and most preferably 12 or more.
According to an aspect of the present invention, the water-soluble lubricating composition comprises 10 to 90 wt.%, preferably 20 to 70 wt.% and more preferably 20 to 50 wt.%, based on its total weight, of a water-soluble polyester or a water-soluble polyether.
According to the aspect of the present invention, in order to further improve the performance in terms of lubricity and complete water solubility, the water-soluble polyester or water-soluble polyether has a weight average molecular weight in the range of 200 to 5000.
Preferably, the water-soluble polyester is polyoxyethylene fatty acid ester. The polyoxyethylene fatty acid ester has the chemical formula RCOO (CH) 2 CH 2 O) n H, wherein R represents an alkyl group having 8 to 14 carbon atoms, and n represents an integer of 9 to 14. Examples of polyoxyethylene fatty acid esters that can be used in the present invention include: USP89 manufactured by Nanjing multisource bioengineering, Inc., having HLB value of 11.5; and Priolube 3955 manufactured by clariant chemical (china) ltd and having an HLB value of 7.
Preferably, the water-soluble polyether is alkyl polyoxyethylene oxypropylene ether. The alkyl polyoxyethylene oxypropylene ether has the chemical formula R' -O- (CH) 2 CH 2 O) a (C 3 H 6 O) b H, wherein R' represents an alkyl group having 4 to 16 carbon atoms, a represents an integer of 4 to 20, and b represents an integer of 1 to 10. Examples of alkylpolyoxyethylene oxypropylene ethers that may be used in the present invention include: genapol EP2584, produced by Crainen chemical (China) Co., Ltd., having an HLB value of 8.5; 50-HB-750 manufactured by the Dow chemical company having an HLB value of 12; and Ecosurf SA-4 manufactured by the Dow chemical company, which has an HLB value of 7.
A surfactant for improving the surface active properties is also included in the water-soluble lubricating composition according to the present invention.
According to an aspect of the present invention, the water-soluble lubricating composition comprises from 0.2 to 10 wt%, preferably from 0.5 to 8 wt% and more preferably from 1 to 4 wt% of surfactant, based on its total weight.
There is no particular limitation on the type of surfactant, which may comprise one or more of the following: sorbitan monooleate, sorbitan laurate and polyoxyethylene lauryl ether. Preferably, the surfactant is sorbitan monooleate. Examples of surfactants that can be used in the present invention include: span 80 manufactured by national drug group chemical agents limited; span 20 manufactured by national drug group chemical agents limited; and Brij30 manufactured by prochloraz (shanghai) ltd.
The water-soluble lubricating composition according to the present invention further contains a solvent for dissolving the water-soluble polyester or water-soluble polyether as described above and a surfactant.
According to an aspect of the present invention, the water-soluble lubricating composition comprises from 1 to 89.8 wt.%, preferably from 10 to 80 wt.% and more preferably from 30 to 60 wt.% of solvent, based on its total weight.
The type of the solvent is not particularly limited, and the solvent is preferably sufficiently soluble with water. Preferably, the solvent is selected from organic solvents. More preferably, the organic solvent is selected from a mixture of one or more of the following: ethanol, isopropanol, ethylene glycol monobutyl ether, propylene glycol monobutyl ether, and propylene glycol.
According to another aspect of the present invention, in order to improve the ease of use of the water-soluble lubricating composition, there is also provided a quick-drying type water-soluble lubricant comprising the quick-drying type water-soluble lubricating composition as described above and a propellant in a weight ratio of 1:1 to 9: 1.
There is no particular limitation on the type of propellant that can be used in the present invention as long as it is generally used in the medical field and does not substantially react with the water-soluble polyester or water-soluble polyether, the surfactant, and the solvent as described above. Preferably, the propellant is liquefied petroleum gas.
According to the technical aspect of the present invention, in order to achieve various technical effects, additional components may be optionally contained in the water-soluble lubricating composition and the quick-drying type water-soluble lubricant, as long as the components do not substantially react with the water-soluble polyester or water-soluble polyether, the surfactant, and the solvent as described above and are completely dissolved in water. The additional component is selected from a combination of one or more of the following: antiseptic, bactericide, colorant, antirust agent, complexing agent and essence.
The above-described water-soluble lubricating composition according to the present invention may be prepared by methods conventional in the art. For example, the components of the lubricating composition are added to a glass or stainless steel container and mixed well to obtain a mixture, at normal temperature (25 ℃) and normal pressure (about 1 atm), based on 100 wt% of the total weight of the lubricating composition. When preparing the quick-drying water-soluble lubricant, the mixture is added to an aluminum or tinplate aerosol can, an LPG propellant is added and sealed.
The present invention will be described in more detail with reference to examples. It should be noted that the description and examples are intended to facilitate understanding of the invention, and are not intended to limit the invention. The scope of the invention is defined by the appended claims.
Examples
In the present invention, unless otherwise indicated, all reagents used were commercially available and were used without further purification treatment. Further, "%" mentioned is "% by weight", and "parts" mentioned is "parts by weight".
Specifically, the main raw materials employed in the present invention are shown in the following table:
test method
Various water-soluble lubricating compositions and quick-drying type water-soluble lubricants prepared in examples and comparative examples were tested according to the specific methods listed below.
Lubrication Performance test
The samples prepared above were tested according to GB10006-88 method for measuring coefficient of friction between plastic film and sheet. When the test result is 0.3 or less, it indicates that the lubricant tested has good lubricity.
Specifically, the surface of the stainless steel, including the front and back sides, is thoroughly cleaned with a neutral detergent, and after cleaning, the surface should be thoroughly dried. Directly and uniformly spraying the lubricating oil on the surface of the stainless steel. The stainless steel plate is placed in a room temperature environment for 30 minutes in an inclined manner at an angle of 80-90 degrees. In the central area of a horizontal steel belt of a desk type friction coefficient tester, firstly, wiping the surface of the steel belt clean by absolute ethyl alcohol, flattening a sample by clinging to the steel belt, and sticking the right end of the sample by a strong adhesive tape; then the slide block covered with the sample is placed on the sample covered on the steel belt, and the thin steel wire is hung between the slide block and the sensor. The experiment was started and the coefficient of friction was tested. And after the test is completely finished, taking down the slide block and the sample after the slide block returns. A second experiment was started. The dynamic coefficient of friction values for 3-5 pulls were recorded for 5 pulls per specimen. The average of the three friction coefficient values was calculated.
Water solubility test
1g of the lubricant stock (i.e., the lubricating mixture prepared in the examples or comparative examples below) was added to a 200 ml glass beaker at room temperature. 100 ml of deionized water was added and the mixture was stirred at 800 rpm for 15 minutes. After standing overnight, the mixture was observed for state. If a liquid in a uniform transparent or translucent state is obtained, the lubricant stock solution is completely water-soluble. If the phenomena of layering, precipitation, phase separation and the like occur, the lubricant stock solution is not completely water-soluble.
Turbidity test
The HACH 2100P turbidimeter was powered on, the vial was rinsed clean with DI water, 1/3 samples of the lubricant from the vial were poured, the DI water was replaced, and this was repeated three times. The sample is poured into a sampling bottle, and the surface of the sampling bottle is wiped clean by using dust-free paper. The sample bottle was placed in the turbidimeter sample cell and the lid was closed to read the data and record. Haze of 30 or less is good transparency, and haze of 10 or less is excellent transparency. According to the present invention, turbidity is used as a quantitative indicator to further characterize water solubility. The smaller the haze, the higher the transparency and, in turn, the better the water solubility.
Example 1
10.0g of Genapol EP2584, 0.2g of span 80 and 89.8g of isopropanol were added to a glass beaker and mixed thoroughly at ambient temperature (25 ℃) and pressure (about 1 atm) to give a lubricating composition.
The prepared lubricating compositions were tested according to the test methods for measuring lubricity, turbidity, water solubility as described above in detail, and the results thereof are shown in table 1.
Examples 2 to 15 and comparative examples 1 to 12
A lubricating composition was prepared in a similar manner to example 1, except that the kinds and contents of the respective components were changed as shown in tables 1 to 6 below.
The lubricating compositions prepared in examples 2 to 15 and comparative examples 1 to 12 were tested according to the test methods for measuring lubricity turbidity, water solubility as described above in detail, and the results thereof are shown in tables 1 to 6, respectively.
Examples 16 to 18
5g of Genapol EP2584, 0.1g of span 80 and 45g of isopropyl alcohol were added to a glass beaker under normal temperature (25 ℃) and pressure conditions (about 1 atm) and mixed thoroughly to give a lubricating composition. The mixture was added to an aluminum aerosol can and 50g of LPG propellant was added and sealed to give the quick-drying water-soluble lubricant of example 16.
Examples 17 and 18 were respectively carried out in accordance with a similar method to example 16, except that the contents of the respective components were changed as shown in the following table 7, to prepare quick-drying type water-soluble lubricants of examples 17 and 18.
The quick-drying type water-soluble lubricants prepared in examples 16 to 18 were tested according to the test methods for measuring lubricity, turbidity and water solubility as described above in detail, and the results thereof are shown in Table 7, respectively.
TABLE 1 Water-soluble lubricating compositions according to examples 1-3 and comparative examples 1-2 and their Properties
As shown in table 1, a water-soluble lubricating composition was prepared in examples 1-3 using a water-soluble polyether Genapol EP2584 having an HLB value of greater than 7 (i.e., 8.5), surfactant span 80, and the solvent isopropanol. The results show that the lubricating compositions prepared in examples 1-3 have good lubricity while having excellent water solubility. In contrast, when the content of Genapol EP2584 is less than 10% by weight (e.g., "2.0% by weight" in comparative example 1), the lubricity of the resulting lubricating composition is poor; and when the content of the surfactant is more than 10% by weight (for example, "16.7% by weight" in comparative example 2), the lubricating composition is not water-soluble.
TABLE 2 Water-soluble lubricating compositions according to examples 4-6 and comparative examples 3-4 and their Properties
As shown in Table 2, water-soluble lubricating compositions were prepared in examples 4-6 using a water-soluble polyether 50-HB-750 having an HLB value of greater than 7 (i.e., 12), surfactant span 80, and solvent ethanol. The results show that the lubricating compositions prepared in examples 4-6 have good lubricity while having excellent complete water solubility. In contrast, when the content of 50-HB-750 is less than 10% by weight (e.g., "2.0% by weight" in comparative example 3), the resulting lubricating composition is poor in lubricity; and when the content of the surfactant is more than 10% by weight (e.g., "16.7% by weight" in comparative example 4), the lubricating composition is not water-soluble.
TABLE 3 Water-soluble lubricating compositions according to examples 7-9 and comparative examples 5-6 and their Properties
As shown in Table 3, water-soluble lubricating compositions were prepared in examples 7-9 using water-soluble polyester USP89 having an HLB value greater than 7 (i.e., 11.5), surfactant span 80, and the solvent isopropanol. The results show that the lubricating compositions prepared in examples 7-9 have good lubricity while having excellent complete water solubility. In contrast, when the content of USP89 is less than 10 wt.% (e.g., "2.0 wt.%" in comparative example 5), the lubricity of the resulting lubricating composition is poor; and when the content of the surfactant is more than 10% by weight (for example, "16.7% by weight" in comparative example 6), the lubricating composition is not water-soluble.
TABLE 4 Water-soluble lubricating compositions according to examples 10-12 and comparative examples 7-8 and their Properties
As shown in table 4, water-soluble lubricating compositions were prepared in examples 10 to 12 using a water-soluble polyester Priolube 3955 having an HLB value of 7, a surfactant span 80, and the solvent isopropanol. The results show that the lubricating compositions prepared in examples 10-12 have good lubricity while having excellent water solubility. In contrast, when the content of Priolube 3955 is less than 10 wt% (e.g., "2.0 wt%" in comparative example 7), the lubricity of the resulting lubricating composition is poor; and when the content of the surfactant is more than 10% by weight (for example, "16.5% by weight" in comparative example 8), the lubricating composition is not water-soluble.
TABLE 5 Water-soluble lubricating compositions according to examples 13-15 and comparative examples 9-10 and their Properties
As shown in Table 5, water-soluble lubricating compositions were prepared in examples 13-15 using the water-soluble polyether Ecosurf SA-4 having an HLB value of 7, surfactant span 80, and the solvent isopropanol. The results show that the lubricating compositions prepared in examples 13-15 have good lubricity while having excellent water solubility. In contrast, when the content of Ecosurf SA-4 is less than 10 wt.% (e.g., "2.0 wt.%" in comparative example 9), the lubricity of the resulting lubricating composition is poor; and when the content of the surfactant is more than 10% by weight (e.g., "16.7% by weight" in comparative example 10), the lubricating composition is not water-soluble.
TABLE 6 Water-soluble lubricating compositions according to comparative examples 11-12 and their Properties
As shown in table 6, water-soluble lubricating compositions were prepared in comparative examples 11 and 12 using water-soluble polyester Priolube 3952(HLB value of 3.5) or water-soluble polyether Triton X-15(HLB value of 4.9) having HLB value of less than 7, surfactant span 80 and solvent isopropyl alcohol. The results show that the resulting lubricating composition is not water-soluble, and the effect of complete water-solubility cannot be achieved.
TABLE 7 fast drying water soluble lubricants according to examples 16-18 and their Properties
As shown in table 7, water-soluble lubricating compositions were prepared in examples 16-18 using a water-soluble polyether having an HLB value greater than 7 (i.e., 8.5) Genapol EP2584, surfactant span 80, and solvent isopropyl alcohol. And, a quick-drying type water-soluble lubricant is further obtained by adding an LPG propellant thereto.
The results show that the quick-drying type water-soluble lubricants prepared in examples 16 to 18 have good lubricity while having excellent water solubility.
As can be seen from the above, according to the technical aspect of the present invention, a water-soluble lubricating composition and a quick-drying type water-soluble lubricant that provide good lubricity and also have excellent complete water solubility can be obtained.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the purpose of limiting the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention, and the technical contents of the present invention as claimed are all described in the claims.
Claims (6)
1. A water-soluble lubricating composition comprising, by total weight:
10-90% by weight of a water-soluble polyester or polyether having a hydrophilic-hydrophobic balance (HLB) greater than or equal to 7, the water-soluble polyester having the formula RCOO (CH) 2 CH 2 O) n H, wherein R represents an alkyl group having 8 to 14 carbon atoms, and n represents an integer of 9 to 14, and the water-soluble polyether has a chemical formula of R' -O- (CH) 2 CH 2 O) a (C 3 H 6 O) b H, wherein R' represents an alkyl group having 4 to 16 carbon atoms, a represents an integer of 4 to 20, and b represents an integer of 1 to 10;
0.2 to 10 wt% of a surfactant; and
1-89.8 wt% of a solvent.
2. The water-soluble lubricating composition of claim 1, wherein the water-soluble polyester or water-soluble polyether has a weight average molecular weight in the range of 200 to 5000.
3. The water-soluble lubricating composition of claim 1, wherein the surfactant is sorbitan monooleate.
4. The water-soluble lubricating composition of claim 1, wherein the solvent is selected from ethanol, isopropanol, or mixtures thereof.
5. A quick-drying water-soluble lubricant comprising the quick-drying water-soluble lubricating composition according to any one of claims 1 to 4 and a propellant in a weight ratio of 1:1 to 9: 1.
6. The quick-drying, water-soluble lubricant according to claim 5, wherein the propellant is liquefied petroleum gas.
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