CN103692733B - A kind of full conjunction or composite aqueous polyurethane condom - Google Patents
A kind of full conjunction or composite aqueous polyurethane condom Download PDFInfo
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Abstract
The invention discloses a kind of full conjunction or composite aqueous polyurethane condom, at least two-layer in internal layer, intermediate layer and outer layer up of three layers, and three layers be Waterborne PU Composite.By mass percentage, the consisting of of aqueous polyurethane: 5～the amine chainextender of the nertralizer of the diluent of the cross-linked modifier of the hydrophilic chain extender of the polytetramethylene ether diol of the diisocyanate of 15%, 12～25%, 0.3～3%, 0.3～2%, 5～10%, 0.1～2%, 0.1～2% and 62～the water of 70%.Beneficial effects of the present invention: condom is nontoxic, without special odor, high without sensitization, intensity, can be thinner, and can more effectively intercept sex desease virus etc..Comparing existing polyurethane material, after film forming, elongation percentage is higher, modulus is lower, intensity is higher.The elongation percentage of film is not less than 980%, and hot strength is not less than 1900psi, and the burst pressure of set is not less than 1.0kPa.
Description
Technical field
The present invention relates to the manufacturing technology of a kind of water-base polyurethane material and application thereof, be specifically related to a kind of full conjunction
Or composite aqueous polyurethane condom.
Background technology
The making material of condom is usually natural emulsion at present, and tradition natural emulsion condom has higher
The advantages such as elastic, good pliability, the infection that can effectively practise contraception and reduce sexually transmitted disease (STD), but genuine milk
There is the dry between 5000 to 70000 nanometers in xanthan molecule structure, these cracks can stop diameter
It is the Human Sperm etc. of 5000 nanometers, but when actually used, still there are disadvantages that:
1), for the less HIV (human immunodeficiency virus) of a diameter of 120 nanometers of molecule, 45 nanometers to 55 nanometers it
Between human papillomavirus, the hepatitis B virus etc. of 42 nanometers, natural emulsion lack block ability accordingly,
Medical experiment is it has been proved that natural emulsion condom cannot be entirely prevented from the infiltration of HIV (human immunodeficiency virus) etc..
2), cannot remove owing to the raw material of natural emulsion condom itself contains certain water soluble protein,
Human allergy is the most easily caused to react.
3), natural emulsion condom in the course of processing of vulcanization reaction, the chemistry of a kind of nitrosamine can be produced
Material.Nitrosamine is a kind of carcinogen in human body, if natural emulsion condom access times are frequent,
There is the potential risk of induced tumor.
To this end, people start to seek new material from synthetic material field makes safety to substitute natural emulsion
Set.Existing science and technology finds, polyurethane, polyisoprene, Ding Qing etc. synthesize macromolecular material, and its molecule is tied
Structure is similar to natural emulsion, but densification is greatly improved, and its molecule space can intercept HIV (human immunodeficiency virus), liver completely
The infiltration of scorching virus etc..
From the point of view of presently disclosed technology, there is the manufacture method of solvent method polyurethane condom
(CN1218822C), PAUR bulging forming method (CN1142838A), polyether/polyester type gathers
The preparation method (CN1304944A) of urethane material and condom thereof, polyurethane rubber latex prepares condom
(CN1136054A) etc..Although the polyurethane of public technology scheme has the more unexistent excellences of natural emulsion
Performance, but for the material as making condom, its elastic extension rate and flexibility should seem not,
Modulus is the highest, and production method is complicated, needs to dissolve, disperse, and control condition is harsh.
Summary of the invention
The invention aims to provide a kind of nontoxic, not allergy, safer, have a good mechanics again
The complete of performance closes or composite aqueous polyurethane condom.
In order to reach the purpose of the present invention, technical scheme is as follows:
A kind of complete close or composite aqueous polyurethane condom, by internal layer, intermediate layer and outer layer up of three layers, three
In Ceng, at least two-layer is Waterborne PU Composite.Consisting of of described Waterborne PU Composite:
Being all Waterborne PU Composite as preferred technical scheme, internal layer and outer layer, intermediate layer is breast
Glue-line.It is furthermore preferred that internal layer, intermediate layer and outer layer are all Waterborne PU Composite.
As preferred technical scheme, described diisocyanate is toluene di-isocyanate(TDI) (TDI), different Fo Er
Ketone diisocyanate (IPDI), hydrogenated diphenyl methane diisocyanate (H12MDI, HMDI) or
Any one or a few in hexamethylene diisocyanate (HDI).
As preferred technical scheme, the molecular weight of described polytetramethylene ether diol (PTMG) be 1000～
3000.If the molecular weight of PTMG is excessive, then the thickness after aqueous polyurethane film forming is big, elastic and extension
It is the poorest to spend, in-convenience in use；If molecular weight is too small, then possibly cannot film forming.Polytetramethylene ether diol
Effect be and unnecessary acid generates esters, it is ensured that last polyaminoester emulsion is alkalescence.
As preferred technical scheme, described hydrophilic chain extender is dihydromethyl propionic acid (DMPA) or dihydroxy
Any one in methylbutanoic acid (DMBA).Hydrophilic chain extender is in acid, in order to regulate reactant
The acid-base value of system, and ensure that reaction system is an acid environment, beneficially polyreaction, because different
Reaction condition, can generate different types of polyurethane.
As preferred technical scheme, described cross-linked modifier is trimethylolpropane (TMP) or new penta 2
The mixture of any one or they in alcohol (NPG).The effect of cross-linked modifier is to improve condom
The mechanical property such as hot strength, fracture strength.
As preferred technical scheme, described diluent is acetone or dimethyl acetylamide (DMAC)
Any one.
As preferred technical scheme, described amine chainextender is diethylenetriamine.
What nertralizer was selected is sodium hydroxide or other bases, such as sodium carbonate, carbon acid sodium, potassium hydroxide
Or organic amine etc., the effect of nertralizer is to ensure that the aqueous polyurethane emulsion that final reaction obtains is an alkalescence
Environment, preferably selects the sodium hydroxide that alkalescence is stronger, is more conducive to the carrying out of reaction.
Concrete preparation method comprises the steps:
Step one, prepolymerization reaction: under room temperature, it is sequentially added into diisocyanate and polytetramethylene ether in proportion
Glycol (PTMG), stirring mixing be warmed up to 50～90 DEG C, after react 2 hours, add hydrophilic chain extender with
Diluent, continues reaction 2 hours, then cools to 40～70 DEG C, add cross-linked modifier and diluent,
After continuing reaction 2 hours, cool to less than 55 DEG C, add diluent adjustment system viscosity and be less than 100Pa s,
Prepare prepolymer；
Step 2, emulsion process: add nertralizer and mixture of ice and water in the reactor, open stirring,
Keep material 5 DEG C～20 DEG C, slowly prepolymer is added thereto, and raising speed of agitator arrives rapidly
2000r/min, emulsifying 10～30 minutes, add amine chainextender chain extension, amine chainextender is slowly added dropwise and uses one
Within individual hour, add, add continuation stirring one hour, prepare solid content 30～the aqueous polyurethane emulsion of 38%；
In step 2, the rate of addition of amine chainextender wants slow, if dropping is too fast, result can cause chain extension too
Greatly, polymerization；
The effect adding frozen water compound is to lower the temperature to whole reaction system, i.e. emulsifying temperature, if temperature mistake
Height, then can cause demulsifying phenomenon to produce, the polyaminoester emulsion obtained such as bean curd shape, it is impossible to film forming；
Step 3, condom fabrication processing: clean mould → single-steeping, be dried → double-steeping,
Be dried → tri-dippings, crimping, dry → demoulding, the control condition of this technological process particularly as follows:
1. mould is cleaned: by clean for mould clear water cleaning, control temperature 75 DEG C, dry 5～15 minutes；
2. single-steeping: the mould after cleaning-drying immerses what above-mentioned steps two prepared temperature 40～50 DEG C
In aqueous polyurethane emulsion 3～15s, taking out and be dried, baking temperature is 75 DEG C, is dried 5～20 minutes；
3. double-steeping: repeat the above steps operating process 2.；
4. three dippings: control dipping temperature 40～50 DEG C, the dipping emulsion time 3～15s, crimping, dry
Dry temperature is 110～120 DEG C, is dried 15～30 minutes；
It is cooled to the room temperature demoulding the most after drying, i.e. prepares condom finished product.
Above step is the technique step generating full Heshui polyurethane condom (three layers are aqueous polyurethane)
Suddenly, immerse in latex solution if being changed into by step 3. middle double-steeping, then produce is exactly the poly-ammonia of composite water soluble
Ester condom (two-layer aqueous polyurethane, one layer of latex).
The invention have the benefit that
Use being combined or full Heshui polyurethane condom of inventive formulation, nontoxic, without special odor, nothing
Sensitization, intensity is high, can be thinner, molecular gap is less, can more effectively intercept sex desease virus etc., solves
Natural emulsion condom anti-virus ability of having determined is low, protein allergy, containing carcinogenic nitrosamine material, wall thickness
The shortcomings such as conduction of heat is slow, have again mechanical property suitable with latex, even more than latex simultaneously.
Meanwhile, compare existing polyurethane material, by regulating the ratio of each composition, especially choose point
Son amount is the polytetramethylene ether diol (PTMG) of 1000～3000, and controls preparation process so that film forming
Rear elongation percentage is higher, modulus is lower, intensity is higher, it is possible to maintain good mechanical property, condom three
Tunic gross thickness is not more than 0.03mm, and the elongation percentage of film is not less than 980%, and hot strength is not less than 1900psi,
The burst pressure of set is not less than 1.0kPa.Manufacturing process is the most simpler.
Accompanying drawing explanation
Fig. 1 is that the present invention closes or the structural representation of composite aqueous polyurethane condom entirely.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, but protection scope of the present invention is not only limited to
In embodiment.
As it is shown in figure 1, a kind of full conjunction or composite aqueous polyurethane condom.
A kind of full conjunction or composite aqueous polyurethane condom, by internal layer 2, intermediate layer 3 and 4 three layers of group of outer layer
Becoming, in three layers, at least two-layer is Waterborne PU Composite.When only two-layer is aqueous polyurethane composite wood
During material, being internal layer 2 and outer layer 3 is Waterborne PU Composite, intermediate layer 3 is emulsion layer.
By mass percentage, the consisting of of Waterborne PU Composite:
Diisocyanate is toluene di-isocyanate(TDI) (TDI), isophorone diisocyanate (IPDI), hydrogen
Change methyl diphenylene diisocyanate (H12MDI, HMDI) or hexamethylene diisocyanate (HDI)
In any one or a few.
The molecular weight of polytetramethylene ether diol (PTMG) is 1000～3000.If the molecular weight of PTMG
Excessive, then the thickness after aqueous polyurethane film forming is big, elastic the poorest with ductility, in-convenience in use；If
Molecular weight is too small, then possibly cannot film forming.
Hydrophilic chain extender is appointing in dihydromethyl propionic acid (DMPA) or dimethylolpropionic acid (DMBA)
Meaning one.Hydrophilic chain extender is in acid, in order to regulate the acid-base value of reaction system, and ensures reaction
System is an acid environment, and beneficially polyreaction, because different reaction conditions, can generate variety classes
Polyurethane.
Cross-linked modifier be in trimethylolpropane (TMP) or neopentyl glycol (NPG) any one or
Their mixture.Diluent is any one of acetone or dimethyl acetylamide (DMAC).Amine expands
Chain agent is diethylenetriamine.
Concrete preparation method comprises the steps:
Step one, prepolymerization reaction: under room temperature, it is sequentially added into diisocyanate and polytetramethylene ether in proportion
Glycol (PTMG), stirring mixing be warmed up to 50～90 DEG C, after react 2 hours, add hydrophilic chain extender with
Diluent, continues reaction 2 hours, then cools to 40～70 DEG C, add cross-linked modifier and diluent,
After continuing reaction 2 hours, cool to less than 55 DEG C, add diluent adjustment system viscosity and be less than 100Pa s,
Prepare prepolymer；
Step 2, emulsion process: add nertralizer and mixture of ice and water in the reactor, open stirring, protect
Hold material 5 DEG C～20 DEG C, slowly prepolymer is added thereto, and raising speed of agitator arrives rapidly
2000r/min, emulsifying 10～30 minutes, add amine chainextender chain extension, amine chainextender is slowly added dropwise and uses one
Within individual hour, add, add continuation stirring one hour, prepare solid content 30～the aqueous polyurethane emulsion of 38%；
Step 3, condom fabrication processing: clean mould → single-steeping, be dried → double-steeping,
Be dried → tri-dippings, crimping, dry → demoulding, the control condition of this technological process particularly as follows:
1. mould is cleaned: by clean for mould clear water cleaning, control temperature 75 DEG C, dry 5～15 minutes；
2. single-steeping: the mould after cleaning-drying immerses what above-mentioned steps two prepared temperature 40～50 DEG C
In aqueous polyurethane emulsion 3～15s, taking out and be dried, baking temperature is 75 DEG C, is dried 5～20 minutes；
3. double-steeping: repeat the above steps operating process 2.；
4. three dippings: control dipping temperature 40～50 DEG C, the dipping emulsion time 3～15s, crimping, dry
Dry temperature is 110～120 DEG C, is dried 15～30 minutes；
It is cooled to the room temperature demoulding the most after drying, i.e. prepares condom finished product.
Embodiment 1:
Prepolymerization reaction: under room temperature, adds 122g toluene di-isocyanate(TDI) (TDI) in the reactor of band stirring
With the polytetramethylene ether diol (PTMG) that 120g molecular weight is 1000, stirring mixing is warmed up to 50～60 DEG C,
After reacting 2 hours, add 3gDMPA and 10g acetone, continue reaction 2 hours, then cool to 40 DEG C,
The acetone diluent 30g adding neopentyl glycol that concentration is 10% and trimethylolpropane mixture is (the newest
The quality of pentanediol and trimethylolpropane mixture is 3g, and acetone is 27g), after continuing reaction 2 hours,
Cool to less than 55 DEG C, add 13g acetone and adjust system viscosity, prepare prepolymer.
Emulsion process: add 1gNaOH and 691g mixture of ice and water in 1000ml reactor, open and stir
Mix, keep temperature of charge 5 DEG C～0 DEG C, slowly prepolymer is added thereto, after adding, improves rapidly stirring
Rotating speed is to 2000r/min.Emulsifying 10 minutes, adds the diethylenetriamine aqueous solution chain extension of 10g content 10%,
Diethylenetriamine aqueous solution is slowly added dropwise and uses add for one hour, adds continuation stirring one hour, prepares solid
The condom aqueous polyurethane emulsion of content 30%.
Condom fabrication processing:
1. mould is cleaned: by clean for mould clear water cleaning, control temperature 75 DEG C, dry 5～15 minutes.
2. single-steeping: the mould after cleaning-drying immerses what above-mentioned steps two prepared temperature 40～50 DEG C
In aqueous polyurethane emulsion 3～15s, take out and be dried.Baking temperature is 75 DEG C, is dried 5～20 minutes.
3. double-steeping: repeat the above steps operating process 2..
4. three dippings: control dipping temperature 40～50 DEG C, the dipping emulsion time 3～15s, crimping, dry
Dry temperature is 110～120 DEG C, is dried 15～30 minutes.
Be cooled to the room temperature demoulding the most after drying, i.e. prepare condom finished product, and the internal layer 2 of this condom, in
The material of interbed 3 and outer layer 4 is aqueous polyurethane.
Embodiment 2:
Prepolymerization reaction is identical with the step of above-described embodiment 1 with emulsion process, is when condom makes
In double-steeping, immersing in latex, the material i.e. preparing internal layer 2 and outer layer 4 is aqueous polyurethane, middle
The material of layer 3 is latex.
Embodiment 3:
Prepolymerization reaction: under room temperature, adds 70g hydrogenated diphenyl methane two isocyanide in the reactor of band stirring
Acid esters (HMDI) and the polytetramethylene ether diol (PTMG) that 120g molecular weight is 3000, stirring mixing
Being warmed up to 90 DEG C, after reacting 2 hours, adding 40g mass fraction is 75% dimethylolpropionic acid (DMBA)
Acetone soln, continues reaction 2 hours, then cools to 50 DEG C, add that mass fraction is 50% new penta
(i.e. neopentyl glycol and trimethylolpropane mixes the acetone diluent 40g of glycol and trimethylolpropane mixture
The quality of compound is 20g, and acetone is 20g), after continuing reaction 2 hours, cool to less than 55 DEG C, add
70g acetone adjusts system viscosity, prepares prepolymer.
Emulsion process: add 20gNaOH and 440g mixture of ice and water in 1000ml reactor, open
Stirring, keeps temperature of charge 15 DEG C～20 DEG C, is slowly added thereto by prepolymer, improves rapidly and stir after adding
Mix rotating speed to 2000r/min.Emulsifying 30 minutes, adds the diethylenetriamine aqueous solution of 200g content 10%
Chain extension, diethylenetriamine aqueous solution is slowly added dropwise and uses add for one hour, adds continuation stirring one hour,
Prepare the condom aqueous polyurethane emulsion of solid content 31.5%.
Condom fabrication processing:
With embodiment 1.
Embodiment 4:
Prepolymerization reaction: under room temperature, adds 150g isophorone diisocyanate in the reactor of band stirring
(IPDI) and polytetramethylene ether diol (PTMG) that 120g molecular weight is 2000, stirring mixing is warmed up to
85 DEG C, after reacting 2 hours, add 10g dimethylolpropionic acid (DMBA) and 10g dimethyl acetylamide,
Continue reaction 2 hours, then cool to 60～70 DEG C, add neopentyl glycol that mass fraction is 50% and
Dimethyl acetylamide diluent 20g (i.e. neopentyl glycol and the trimethylolpropane of trimethylolpropane mixture
The quality of mixture is 10g, and dimethyl acetylamide is 10g), after continuing reaction 2 hours, cool to 55 DEG C
Hereinafter, add 50g dimethyl acetylamide and adjust system viscosity, prepare prepolymer.
Emulsion process: add 10gNaOH and 530g mixture of ice and water in 1000ml reactor, open
Stirring, keeps temperature of charge 10 DEG C～15 DEG C, is slowly added thereto by prepolymer, improves rapidly and stir after adding
Mix rotating speed to 2000r/min.Emulsifying 20 minutes, adds the diethylenetriamine aqueous solution of 100g content 10%
Chain extension, diethylenetriamine aqueous solution is slowly added dropwise and uses add for one hour, adds continuation stirring one hour,
Prepare the condom aqueous polyurethane emulsion of solid content 31%.
Condom fabrication processing:
With embodiment 1.
Embodiment 5:
Prepolymerization reaction: under room temperature, adds 28g diphenylmethane diisocyanate in the reactor of band stirring
Ester (HMDI), 28 hexamethylene diisocyanates (HDI) and 250g molecular weight is 2500 poly-four
Methylene ether glycol (PTMG), stirring mixing is warmed up to 70 DEG C, after reacting 2 hours, adds 16g mass
Mark is 50% dimethylolpropionic acid (DMBA) acetone soln, continues reaction 2 hours, then lowers the temperature
To 55 DEG C, the acetone adding neopentyl glycol that mass fraction is 50% and trimethylolpropane mixture is dilute
Release liquid 12g (i.e. the quality of neopentyl glycol and trimethylolpropane mixture is 6g, and acetone is 6g), continue
After reacting 2 hours, cool to less than 55 DEG C, add 36g acetone and adjust system viscosity, prepare prepolymer.
Emulsion process: add 5gNaOH and 575g mixture of ice and water in 1000ml reactor, open and stir
Mix, keep temperature of charge 5 DEG C～10 DEG C, slowly prepolymer is added thereto, after adding, improves rapidly stirring
Rotating speed is to 2000r/min.Emulsifying 15 minutes, adds the diethylenetriamine aqueous solution chain extension of 50g content 10%,
Diethylenetriamine aqueous solution is slowly added dropwise and uses add for one hour, adds continuation stirring one hour, prepares solid
The condom aqueous polyurethane emulsion of content 30%.
Condom fabrication processing:
With embodiment 1.
Embodiment 6:
Prepolymerization reaction: under room temperature, adds 50g methyl diphenylene diisocyanate in the reactor of band stirring
(HMDI), 50 hexamethylene diisocyanates (HDI) and 250g molecular weight are poly-four methylenes of 1500
Base ether glycol (PTMG), stirring mixing is warmed up to 75 DEG C, after reacting 2 hours, adds 30g mass fraction
It is 50% dimethylolpropionic acid (DMBA) acetone soln, continues reaction 2 hours, then cool to 60 DEG C,
Add neopentyl glycol and the acetone diluent 10g of trimethylolpropane mixture that mass fraction is 50%
(i.e. the quality of neopentyl glycol and trimethylolpropane mixture is 5g, and acetone is 5g), continues reaction 2 little
Shi Hou, cools to less than 55 DEG C, adds 36g acetone and adjusts system viscosity, prepares prepolymer.
Emulsion process: add 15gNaOH and 485g mixture of ice and water in 1000ml reactor, open
Stirring, keeps temperature of charge 5 DEG C～10 DEG C, is slowly added thereto by prepolymer, improves rapidly and stir after adding
Mix rotating speed to 2000r/min.Emulsifying 25 minutes, adds the diethylenetriamine aqueous solution of 150g content 10%
Chain extension, diethylenetriamine aqueous solution is slowly added dropwise and uses add for one hour, adds continuation stirring one hour,
Prepare the condom aqueous polyurethane emulsion of solid content 30%.
Condom fabrication processing:
With embodiment 1.
Embodiment 7:
Prepolymerization reaction is identical with the step of above-described embodiment 5 with emulsion process, is when condom makes
In double-steeping, immersing in latex, the material i.e. preparing internal layer 2 and outer layer 4 is aqueous polyurethane, middle
The material of layer 3 is latex.
Embodiment 8:
Prepolymerization reaction is identical with the step of above-described embodiment 6 with emulsion process, is when condom makes
In double-steeping, immersing in latex, the material i.e. preparing internal layer 2 and outer layer 4 is aqueous polyurethane, middle
The material of layer 3 is latex.
The condom preparing various embodiments above and the condom of commercially available two kinds of samples carry out material and property
Can detect, testing standard is come according to GB7544-1992, GB/T7546-1992 and GB/T7547-1992
Carrying out, test result is as shown in table 1 below and 2:
100% modulus, it is simply that modulus when being stretched to 100%；300% modulus, it is simply that be stretched to 300%
Time modulus.Modulus is the biggest, and elasticity is the least.
Fracture strength, refers to that material occurs the stress of fracture, during fracture till the length that extended and sample this
The ratio of the length of body is elongation percentage (%).
The material-structure of each condom of table 1
| Thickness mm | Internal layer | Intermediate layer | Outer layer | |
| Embodiment 1 | 0.03 | Aqueous polyurethane | Aqueous polyurethane | Aqueous polyurethane |
| Embodiment 2 | 0.03 | Aqueous polyurethane | Latex | Aqueous polyurethane |
| Embodiment 3 | 0.03 | Aqueous polyurethane | Aqueous polyurethane | Aqueous polyurethane |
| Embodiment 4 | 0.03 | Aqueous polyurethane | Aqueous polyurethane | Aqueous polyurethane |
| Embodiment 5 | 0.03 | Aqueous polyurethane | Aqueous polyurethane | Aqueous polyurethane |
| Embodiment 6 | 0.03 | Aqueous polyurethane | Aqueous polyurethane | Aqueous polyurethane |
| Embodiment 7 | 0.03 | Aqueous polyurethane | Latex | Aqueous polyurethane |
| Embodiment 8 | 0.03 | Aqueous polyurethane | Latex | Aqueous polyurethane |
| Commercial samples 1 | 0.03 | Latex | Latex | Latex |
| Commercial samples 2 | 0.03 | Latex | Latex | Latex |
The each the performance test results of table 2 condom
Remarks: (psi=pound/square inch)
From Tables 1 and 2:
Use being combined or full Heshui polyurethane condom of inventive formulation, nontoxic, without special odor, nothing
Sensitization, intensity is high, can be thinner, molecular gap is less, can more effectively intercept sex desease virus etc., solves
Natural emulsion condom anti-virus ability of having determined is low, protein allergy, containing carcinogenic nitrosamine material, wall thickness
The shortcomings such as conduction of heat is slow, have again mechanical property suitable with latex, even more than latex simultaneously.
Meanwhile, compare existing polyurethane material, by regulating the ratio of each composition, especially choose point
Son amount is the polytetramethylene ether diol (PTMG) of 1000～3000, and controls preparation process so that film forming
Rear elongation percentage is higher, modulus is lower, intensity is higher, it is possible to maintain good mechanical property, manufacturing process
The most simpler.
Last it is noted that above example only in order to the present invention is described and and unrestricted described in the invention
Technical scheme, therefore, although this specification with reference to each above-mentioned embodiment to present invention has been in detail
Thin explanation, but, it will be understood by those within the art that, still the present invention can be repaiied
Changing or equivalent, and all are without departing from the technical scheme of the spirit and scope of the present invention and improvement thereof, it is equal
Should contain in scope of the presently claimed invention.
Claims (3)
1. full conjunction or a composite aqueous polyurethane condom, by internal layer (2), intermediate layer (3) and outer layer
(4) up of three layers, in three layers, at least two-layer is Waterborne PU Composite, it is characterised in that: described
Consisting of of Waterborne PU Composite, consisting of of aqueous polyurethane:
Wherein, the molecular weight of described polytetramethylene ether diol is 1000～3000, and described hydrophilic chain extender is
Any one in dihydromethyl propionic acid or dimethylolpropionic acid, described cross-linked modifier is trimethylolpropane
Or the mixture of any one or they in neopentyl glycol, described amine chainextender is diethylenetriamine.
Full conjunction the most according to claim 1 or composite aqueous polyurethane condom, it is characterised in that
Described diisocyanate is toluene di-isocyanate(TDI), isophorone diisocyanate, hydrogenated diphenyl methane two
Any one or a few in isocyanates or hexamethylene diisocyanate.
Full conjunction the most according to claim 1 or composite aqueous polyurethane condom, it is characterised in that
Described diluent is any one of acetone or dimethyl acetylamide.
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| CN201310674596.9A CN103692733B (en) | 2013-12-10 | 2013-12-10 | A kind of full conjunction or composite aqueous polyurethane condom |
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| CN103692733B true CN103692733B (en) | 2016-08-17 |
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| CN111072902B (en) * | 2019-12-30 | 2020-09-08 | 眉山尤博瑞新材料有限公司 | Multilayer condom containing modified polyurethane raw material and preparation method thereof |
| CN111658288A (en) * | 2020-05-20 | 2020-09-15 | 兰州科天健康科技股份有限公司 | Pure polyurethane condom with adhesive layer and preparation method thereof |
| MX2022012118A (en) * | 2020-03-31 | 2023-01-11 | Reckitt Benckiser Health Ltd | Mold for molding polyurethane condom, and preparation method and use method for mold. |
| CN111748110A (en) * | 2020-05-20 | 2020-10-09 | 兰州科天健康科技股份有限公司 | Composite polyurethane condom with adhesive layer and preparation method thereof |
| CN116672151A (en) * | 2020-05-20 | 2023-09-01 | 利洁时健康有限公司 | Composite polyurethane condom and preparation method thereof |
| CN111808260B (en) * | 2020-07-29 | 2021-05-25 | 四川尤博瑞新材料有限公司 | Thermosensitive condom based on waterborne polyurethane and preparation method thereof |
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| CN1631929A (en) * | 2004-11-26 | 2005-06-29 | 四川大学 | Method for preparing waterproof poromeric sterilizing polyurethane elastomer |
| CN101696262A (en) * | 2009-10-23 | 2010-04-21 | 华南理工大学 | Preparation method and application of modified polyurethane aqueous dispersions of polyisocyanate curing agents |
| CN101961279A (en) * | 2010-11-05 | 2011-02-02 | 胡智强 | Double-layer sandwich or multi-layer sandwich multi-latex condom and preparation method thereof |
| CN102358777A (en) * | 2011-07-28 | 2012-02-22 | 上海华明高技术（集团）有限公司 | Water-based polyurethane elastomer emulsion, and preparation method and application thereof |
| CN202526375U (en) * | 2012-04-11 | 2012-11-14 | 上海名邦橡胶制品有限公司 | Special condom for pregnant women |
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2013
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| CN1136054A (en) * | 1995-05-13 | 1996-11-20 | 徐景铎 | Polyurethane latax and its production and condom therefrom |
| CN1631929A (en) * | 2004-11-26 | 2005-06-29 | 四川大学 | Method for preparing waterproof poromeric sterilizing polyurethane elastomer |
| CN101696262A (en) * | 2009-10-23 | 2010-04-21 | 华南理工大学 | Preparation method and application of modified polyurethane aqueous dispersions of polyisocyanate curing agents |
| CN101961279A (en) * | 2010-11-05 | 2011-02-02 | 胡智强 | Double-layer sandwich or multi-layer sandwich multi-latex condom and preparation method thereof |
| CN102358777A (en) * | 2011-07-28 | 2012-02-22 | 上海华明高技术（集团）有限公司 | Water-based polyurethane elastomer emulsion, and preparation method and application thereof |
| CN202526375U (en) * | 2012-04-11 | 2012-11-14 | 上海名邦橡胶制品有限公司 | Special condom for pregnant women |
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| CN103692733A (en) | 2014-04-02 |
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