CN1872891A - Low bounce polyurethane foam body and method of producing the same - Google Patents
Low bounce polyurethane foam body and method of producing the same Download PDFInfo
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- CN1872891A CN1872891A CNA2006100725302A CN200610072530A CN1872891A CN 1872891 A CN1872891 A CN 1872891A CN A2006100725302 A CNA2006100725302 A CN A2006100725302A CN 200610072530 A CN200610072530 A CN 200610072530A CN 1872891 A CN1872891 A CN 1872891A
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- polyurethane foam
- polyvalent alcohol
- foam body
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- polyhydroxy reactant
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- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
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- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention provides a method for producing polyurethane foam with low anti-elasticity, which can be adjusted to optimum point forcing return time according to different usage and purpose, that is to say, adjusting point forcing time between 5- 75 seconds. The polyurethane foam is characterized in that: polyatomic alcohol is the mixture of polyatomic alcohol of 10-90wt% with average function group number being 2-4 and hydroxyl value being 80-120 mg KOH/ g, and polyatomic alcohol of 90-10wt% with average function group number being 2-4 and hydroxyl value being 150-210 mg KOH/ g; the total amount is 100wt%. The raw material comprises polyatomic alcohol, isocyanate and carbon powder.
Description
Technical field
【0001】
The present invention relates to low bounce polyurethane foam body and its manufacture method, its objective is and to be adjusted to arbitrfary point pressurization time of return between 5～75 seconds to a pressurization time of return, and provide low bounce polyurethane foam body and a manufacture method of the low bounce polyurethane foam body that the pressurization time of return is adjusted easily with moisture absorption and deodorization.
Background technology
【0002】
Low bounce polyurethane foam body is used for the wide spectrum of cushioning material, flooring material, wall material etc., and wherein cushioning material uses in sole, shoe-pad, mattress, pillow first grade bedding, home-use chair, automotive sheet, the wrapping absorption impact pad of precision instrument etc.
These low bounce polyurethane foam bodies have excellent characteristic, as bear load, are out of shape with its shape, and pressure is disperseed.Like this, can prevent that partial pressure is concentrated, can obtain use feeling as snug as a bug in a rug.
【0003】
Known as measuring the dispersed good of body pressure there is not the yardstick of the physical properties of partial constriction, just measured the yardstick of low bounce, the notion (with reference to patent documentation 3) that the present inventor has imported so-called " some pressurization time of return ".
So-called " some pressurization time of return " be meant under certain temperature condition, the sample of 50 * 380 * 380 (mm) of test rod (long 10cm, diameter 25mm) is carried out maximum compression after, remove the time that is returned to original thickness after loading.
【0004】
The low bounce polyurethane foam body that is fit to use generally has 5～75 seconds some pressurization time of return.For example, low bounce polyurethane foam body wishes that described " some pressurization time of return " is approximately 5～25 seconds under the situation that the cushioning material as bench, chair, home-use chair babychair, automotive sheet etc. uses.Under the situation of the bedding that is used for pillow, mattress, bed clothes, bedclothes etc., wish that " some pressurization time of return " is approximately 20～75 seconds.In addition, can be fit to use " some pressurization time of return " to be approximately 45～75 seconds low bounce polyurethane foam body at the inner absorption impact material that uses of packaging boxes such as precision instrument or home computer and under situation about using on sole and the shoe-pad etc.Therefore, preferably according to use and application target or use object different, make " some pressurization time of return " optimizing of low bounce polyurethane foam body.
【0005】
The manufacturing of existing urethane foam is conceived to make urethane foam to have the function of moisture absorption, deodorizing and air permeability, can be manufactured on situation that the user contact under and the environment of high temperature humidity be fit to the urethane foam of use down.(with reference to patent documentation 1 and 2)
In patent documentation 3 and the patent documentation 4 described inventions, imported the notion of " some pressurization time of return ", but should invention open according to use with application target or use object different, the technology of " adjusting a some pressurization time of return ".
【0006】
On the other hand, bedsore and skin ulcer appear in old man easily that not only can only recumbency, oneself can not changing position (standing up) and need the people etc. of the weak state of people that people, Disabled persons, the nutritional status of nurse worsen or restorability also to occur bedsore and skin ulcer easily.These symptoms appear easily at bone outstanding position, particularly shoulder blade, sacrum, heel etc.Owing to need the long time mostly, so become a very deep problem.Bedsore is meant skin because of being oppressed, and regional flow is obstructed, and it is the morbid state of skin histology because of circulating and not exclusively sustaining damage as a result, and the skin surface that only rests on of mild symptoms festers, the formation of severe symptoms from the subcutis to the bone, the Pi Fu Stains Ulcers of ligament.Particularly unusual refractory under the situation of severe symptoms according to circumstances occurs sometimes because of infectation of bacteria situation till death.
【0007】
In detail, bedsore is to be subjected to pressure more than the 32mmhg as capillary vessel, produces metabolic disturbance, and as continuing compressing more than 2 hours, because of the ischemic of capillary vessel, cell begins necrosis, causes bedsore.Just, in order to prevent and to improve bedsore, wish skin histology is not applied pressure more than the 32mmhg.(with reference to non-patent literature 1)
Therefore wishing has such being used to prevent and improve the bedding of bedsore and skin ulcer, does not also create but present situation is such bedding.
【0008】
[patent documentation 1] spy opens the 2002-306284 communique
[patent documentation 2] spy opens the 2004-002591 communique
No. 3353249 communique of [patent documentation 3] patent
[patent documentation 4] spy opens the 2004-256794 communique
The P22 of press of [non-patent literature 1] up-to-date nursing care of decubitus ulcer Manual Amendment version 2004/ medical science art limited-liability company
【0009】
Summary of the invention
【0010】
The purpose of this invention is to provide a kind of low bounce polyurethane foam body, according to use and application target or use the different of object, described low bounce polyurethane foam body has best some pressurization time of return.According to the present invention, can be provided in some the low bounce polyurethane foam body that the pressurization time of return is adjusted between 5～75 seconds.(so-called " some pressurization time of return " is under 25 ℃ temperature condition, carry out maximum compression with the sample of test rod (long 10cm, diameter 25mm) 50 * 380 * 380 (mm) after, be returned to time of original thickness after removal is loaded).
Other purpose of the present invention provides a kind of manufacture method, according to use and purpose, can be adjusted to pressurization time of return arbitrarily easily.Like this, can provide low bounce polyurethane foam body with the some pressurization time of return that is applicable to the field of being extensive use of.
For example, along with the amount of allocating into of the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g increases (along with average functional group number is 2～4, hydroxyl value is the polyvalent alcohol of 150～210mgKOH/g the amount of allocating into reduces), it is soft that low bounce polyurethane foam body becomes, and some pressurization time of return shortens.
In addition, for polyhydroxy reactant, uprise as the index of isocyanate composition, the bounce-back of low bounce polyurethane foam body uprises, and some pressurization time of return shortens.In addition, increase with the carbon dust amount of allocating into, the low bounce polyurethane foam body hardening, some pressurization time of return is elongated.The inventor finds can adjust described some pressurization time of return by they combinations, realizes the present invention.
In detail, low bounce polyurethane foam body can be adjusted to about 5～25 seconds to described some pressurization time of return under the situation that the cushioning material as bench, chair, home-use chair babychair, automotive sheet etc. uses.Under the situation about in the bedding of pillow, mattress, bed clothes, bedclothes etc., using, can adjust to about 20～75 seconds to a pressurization time of return.In addition, under the situation about in the inner operable absorption impact material of precision instrument or home computer's etc. packaging box, sole and shoe-pad etc., using, can adjust to about 45～75 seconds to a pressurization time of return.
In more detail, some pressurization time of return is adjusted to the bedding of 36～75 seconds pillow, mattress, bed clothes, bedclothes etc., is particularly suitable as the bedding that is used to prevent and improves bedsore and uses.
【0011】
The present invention relates to a kind of manufacture method of low bounce polyurethane foam body, it is characterized in that, the operation that comprises polyhydroxy reactant, the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 150～210mgKOH/g is mixed, as polyhydroxy reactant; The operation that adds the isocyanate composition, add isocyanate composition after being blended in this polyhydroxy reactant to carbon dust, described polyhydroxy reactant utilizes in the scope of 10～90 weight % in the scope of the described average functional group number of the amount of allocating into arbitrarily is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and 90～10 weight % arbitrarily that the described average functional group number of the amount of allocating into is 2～4, hydroxyl value is the polyvalent alcohol of 150～210mgKOH/g, the amount of allocating into is 100 weight % by always being mixed into described two kinds of polyvalent alcohols, and a pressurization time of return is adjusted.
(so-called " some pressurization time of return " is under 25 ℃ temperature condition, carry out maximum compression with the sample of test rod (long 10cm, diameter 25mm) 50 * 380 * 380 (mm) after, be returned to time of original thickness after removal is loaded).
The invention still further relates to a kind of manufacture method of low bounce polyurethane foam body, it is characterized in that, the operation that comprises polyvalent alcohol, the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 150～210mgKOH/g is mixed, as polyhydroxy reactant; The operation that adds the isocyanate composition, add the isocyanate composition after carbon dust is blended in this polyhydroxy reactant, by with respect to described polyhydroxy reactant, in the isocyanate index is 72～100 scopes, add the described isocyanate composition of arbitrary characteristics, adjust a pressurization time of return.
(so-called " some pressurization time of return " is under 25 ℃ temperature condition, carry out maximum compression with the sample of test rod (long 10cm, diameter 25mm) 50 * 380 * 380 (mm) after, be returned to time of original thickness after removal is loaded).
The invention still further relates to a kind of manufacture method of low bounce polyurethane foam body, it is characterized in that, the operation that comprises polyvalent alcohol, the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 150～210mgKOH/g is mixed, as polyhydroxy reactant; The operation that adds the isocyanate composition, add isocyanate composition after being blended in this polyhydroxy reactant to carbon dust, by with respect to described polyhydroxy reactant, in the scope of 0.1 weight %～3.8 weight %, the interpolation described carbon dust of the amount of allocating into arbitrarily mixes, and adjusts a pressurization time of return.
(so-called " some pressurization time of return " is under 25 ℃ temperature condition, carry out maximum compression with the sample of test rod (long 10cm, diameter 25mm) 50 * 380 * 380 (mm) after, be returned to time of original thickness after removal is loaded).
The invention still further relates to a kind of low bounce polyurethane foam body, polyhydroxy reactant is for being the average functional group number of 10～90 weight % 2～4, hydroxyl value is the polyvalent alcohol of 80～120mgKOH/g, with the average functional group number of 90～10 weight % be 2～4, hydroxyl value is that the polyvalent alcohol of 150～210mgKOH/g mixes, always the amount of allocating into is 100 weight %, by this polyhydroxy reactant, it with respect to the isocyanate index of The polyhydroxy reactant 72～100 isocyanate composition, in the low bounce polyurethane foam body that constitutes with carbon dust, it is characterized in that some pressurization time of return can be adjusted in the scope at 36～75 seconds.
(so-called " some pressurization time of return " is under 25 ℃ temperature condition, carry out maximum compression with the sample of test rod (long 10cm, diameter 25mm) 50 * 380 * 380 (mm) after, be returned to time of original thickness after removal is loaded).
The invention still further relates to a kind of low bounce polyurethane foam body, it is characterized in that,, allocate the described carbon dust of 0.1 weight %～3.8 weight % into respect to described polyhydroxy reactant.
The invention still further relates to a kind of low bounce polyurethane foam body, it is characterized in that, the particle diameter of described carbon dust is 0.1 μ m～1000 μ m.
The invention still further relates to the bedding that constitutes by low bounce polyurethane foam body of the present invention.
[effect of invention]
【0012】
Low bounce polyurethane foam body of the present invention has the time of return that pressurizeed arbitrarily between 5～75 seconds.Its result becomes only urethane foam corresponding to the difference of use, application target or use object.(so-called " some pressurization time of return " is under 25 ℃ temperature condition, carry out maximum compression with the sample of test rod (long 10cm, diameter 25mm) 50 * 380 * 380 (mm) after, be returned to time of original thickness after removal is loaded).
The carbon dust of low bounce polyurethane foam body of the present invention by containing has moisture absorption and de-odorised effect.
The manufacture method of low bounce polyurethane foam body of the present invention be owing to can adjust the some pressurization time of return of low bounce polyurethane foam body easily, so the only low bounce polyurethane foam body corresponding to the object of the purpose of the purposes of using, use or use can be provided.
【0013】
Low bounce polyurethane foam body is adjusted into about 5～25 seconds to described some pressurization time of return under the situation of the cushioning material that is used for bench, chair, home-use chair babychair, automotive sheet etc.Under the situation on the bedding that is used for pillow, mattress, bed clothes, bedclothes etc., described some pressurization time of return is adjusted into about 20～75 seconds.In addition, under the situation in the packing box that is used for precision instrument or home computer etc. on operable absorption impact material, sole and the shoe-pad etc., described some pressurization time of return is adjusted into about 45～75 seconds.
【0014】
In detail, put the bedding that the pressurization time of return is adjusted to 36～75 seconds pillow, mattress, bed clothes, bedclothes etc., the bedding that is particularly suitable as the prevention bedsore uses.
【0015】
Description of drawings
Fig. 1 is the result that measuring stress distributes in the test example 4.(a) be that measuring result, (b) of embodiment 001 is the measuring result of Comparative Examples 001 for the measuring result of embodiment 003, (d) for the measuring result of embodiment 004, (e) for the measuring result of embodiment 002, (c).
Embodiment
【0016】
At first, the manufacture method to low bounce polyurethane foam body of the present invention describes.
The operation that polyvalent alcohol that the manufacture method of low bounce polyurethane foam body of the present invention is 2～4 except allocating average functional group number into, hydroxyl value is 80～120mgKOH/g and average functional group number are 2～4, hydroxyl value is the polyvalent alcohol of 150～210mgKOH/g, allocate the operation of carbon dust into and allocate the operation of isocyanate composition into, in polyhydroxy reactant, contain in 8 hours of carbon dust with isocyanate composition blended operation, also can use existing urethane foam manufacture method.
Other features of low bounce polyurethane foam body manufacture method of the present invention are to adjust to desirable some pressurization time of return, can adjust the amount of allocating into of blending ratio, isocyanate composition and the carbon dust of two kinds of polyvalent alcohols.(so-called " some pressurization time of return " is under 25 ℃ temperature condition, carry out maximum compression with the sample of test rod (long 10cm, diameter 25mm) 50 * 380 * 380 (mm) after, be returned to time of original thickness after removal is loaded).
【0017】
The manufacture method of so-called low bounce polyurethane foam body of the present invention, be after the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 150～210mgKOH/g is mixed, to generate polyhydroxy reactant.Carbon dust is mixed and be dispersed in the described polyhydroxy reactant.After this, polyhydroxy reactant and isocyanate composition are mixed heating and foaming aftershaping.
After being pre-mixed described carbon dust in polyhydroxy reactant, mix the isocyanate composition, and heat and make the operation of its foaming, carbon dust is not poly-partially in urethane foam, is dispersed in the urethane foam.
【0018】
As represent an example of low bounce polyurethane foam body of the present invention, and at first, polyhydroxy reactant, isocyanate composition heating and melting under solid-state situation.The Heating temperature of this moment is decided to be 50～80 ℃.In addition, be arranged on as required under the decompression state, dewater and deaeration.
Then, mixed catalyst and whipping agent or other additive in polyhydroxy reactant.In addition, in the present invention, in advance carbon dust is also allocated in the polyhydroxy reactant, made its homodisperse substantially.The temperature of this moment is decided to be 15～60 ℃.
At last, the isocyanate composition is mixed with the polyhydroxy reactant that is mixed with various additives, heat and the aftershaping that foams, can make low bounce polyurethane foam body of the present invention.
【0019】
In manufacture method of the present invention, the amount of allocating into that polyvalent alcohol that be 2～4 by adjusting average functional group number, hydroxyl value is 80～120mgKOH/g and average functional group number are 2～4, hydroxyl value is the polyvalent alcohol of 150～210mgKOH/g, adjust isocyanate the amount of allocating into, adjust the amount of allocating into of carbon dust, can adjust the some pressurization time of return of low bounce polyurethane foam body of the present invention arbitrarily.It is as follows to be used to adjust an adjustment of the respectively amount of allocating into of pressurization time of return.
【0020】
Along with average functional group number is 2～4, hydroxyl value is the polyvalent alcohol amount of allocating into of 80～120mgKOH/g increase (along with average functional group number is 2～4, hydroxyl value is the minimizing of the polyvalent alcohol amount of allocating into of 150～210mgKOH/g), it is soft that low bounce polyurethane foam body becomes, and some pressurization time of return shortens.
As with respect to polyhydroxy reactant, the index of isocyanate composition improves, and the bounce-back of low bounce polyurethane foam body uprises, and some pressurization time of return shortens.
Along with the increase of the carbon dust amount of allocating into, the low bounce polyurethane foam body hardening, some pressurization time of return is elongated.
In addition, by respectively described each allocation ratio (polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g and the average functional group of number of average functional group number are 2～4, hydroxyl value be polyvalent alcohol, polyhydroxy reactant and isocyanate composition and polyhydroxy reactant and the carbon dust of 150～210mgKOH/g) being made up, can also more carefully adjust a pressurization time of return.
【0021】
Below, the composition that forms low bounce polyurethane foam body of the present invention, its content are elaborated.
Low bounce polyurethane foam body of the present invention is made of polyhydroxy reactant, isocyanate composition, carbon dust, whipping agent, catalyzer.
【0022】
The flexible polyurethane foam of polyhydroxy reactant as in manufacturing that is used for low bounce polyurethane foam body of the present invention uses, and any polyhydroxy reactant can use.Specifically, what can exemplify has: ethylene glycol, propylene glycol, glycol ether, dipropylene glycol, glycerine, trihydroxymethyl propane, 1,2,6-hexanetriol, trolamine, tetramethylolmethane quadrol, toluylene diamine, diphenylmethane diamine, tetra methylol hexanaphthene, methylglycoside, 2,2,6, polyester polyol that 6-four (hydroxyl methyl alcohol) hexalin, diethylenetriamine, polyureas dispersed polyol, amine sex change polyvalent alcohol, polytetramethylene hexa-methylene ether ethylene glycol, the polycondensation by polyvalent alcohol and diprotic acid obtain etc.
【0023】
Use as polyhydroxy reactant of the present invention that the average functional group number of described polyvalent alcohol is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and average functional group number are 2～4, hydroxyl value is the mixture of the polyvalent alcohol of 150～210mgKOH/g.
The polyvalent alcohol that the amount of allocating into of the former polyvalent alcohol and the latter's polyvalent alcohol wishes to allocate into the former is that 10～90 weight %, the latter's polyvalent alcohol is 90～10 weight %, the two kinds of polyvalent alcohols always amount of allocating into are 100 weight %, and the polyvalent alcohol of more preferably allocating the former into is that 10～50 weight %, the latter's polyvalent alcohol is 90～50 weight %.Can be used for the purposes of wide range by the low bounce polyurethane foam body of the described amount of allocating into, be the low bounce polyvalent alcohol that is more suitable for bringing into play the pressure dispersiveness.Its reason is (latter's the polyvalent alcohol amount of allocating into surpasses the situation of 90 weight %) under the former situation of the polyvalent alcohol amount of allocating into less than 10 weight %, urethane foam becomes hard, also be difficult to press and stride even press the surface, some pressurization time of return is longer than the suitable time.The former polyvalent alcohol amount of allocating into surpasses under the situation of 90 weight % (latter's the polyvalent alcohol amount of allocating into is less than the situation of 10 weight %), and low bounce reduces, and becomes too soft, so some pressurization time of return shortens.Therefore, it all is difficult that these situations are used as low bounce, is not preferred range.
There is no particular limitation for the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g, for example can use the trade(brand)name ア Network ト コ one Le LR-00 of Mitsui Takeda Chemical Co., Ltd (the military field of Mitsui ケ ミ カ Le company) system.
There is no particular limitation for the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 150～210mgKOH/g, for example can use the trade(brand)name ア Network ト コ one Le LR-03 of Mitsui Takeda Chemical Co., Ltd (the military field of Mitsui ケ ミ カ Le company) system.
【0024】
The isocyanate composition that uses in low bounce polyurethane foam body of the present invention is as using in making urethane foam, and any isocyanate composition can use.What for example can exemplify has: ethylidene time isocyanate, cyclopropane ethylidene time isocyanate, isophorone time isocyanate, dicyclohexyl methyl hydride time isocyanate, dicyclohexyl time isocyanate, lycine time isocyanate, the fats polyisocyanate salt of methylcyclohexane time isocyanate etc., toluene time isocyanate, ditane time isocyanate, phenylene time isocyanate, dimethyl diphenyl time isocyanate, dianisidine time isocyanate, dimethylbenzene time isocyanate, tetramethyl xylene time isocyanate, naphthalene time isocyanate, dimethyl triphenyl methane four isocyanate, the triphenyl methane tri isocyanate, three (isocyanate phenyl) thiophosphate, the aromatics polyisocyanate salt of polycondensation ditane time isocyanate etc., or the material of their variation.In the present invention, can use a kind of in the described isocyanate composition, also can use two or more mixing back.
【0025】
Isocyanate of the present invention becomes the amount of being dispensed into respect to polyhydroxy reactant 100 weight parts, wishes that index is 72～100, more preferably wishes to adjust to 75～100.By adjusting to the index of described Fan Wall, can become the low bounce polyurethane foam body that uses in the wide range purposes, and have suitable pressure dispersiveness.
Index is less than under 70 the situation, and it is too soft that urethane foam becomes, and is undesirable.Just, because when pressing the polyurethane foam surface, the shape of this urethane foam can not be returned from etat lacunaire sometimes.This is external to surpass under 100 the situation, and the bounce-back of urethane foam is too high, be difficult to use as low bounce polyurethane foam body, and be undesirable.In addition, so-called isocyanate index is to contain in the compound bearing active hydrogen of polyhydroxy reactant, water etc., contains the per-cent of the mole number of the mole number of active hydrogen and isocyanato.
【0026】
To the isocyanate composition that in making low bounce polyurethane foam body of the present invention, uses, there is no particular limitation, ケ ネ one ト 80 (trade(brand)name) or toluene di isocyanate (TDI-80, TDI-65), the thick-diphenylmethane diisocyanate (Crude-MDI) etc. that Mitsui Takeda Chemical Co., Ltd's (the military field of Mitsui ケ ミ カ Le) system is arranged that can exemplify.
【0027】
In low bounce polyurethane foam body of the present invention, also contain carbon dust.The particle diameter of carbon dust is 0.1 μ m～1000 μ m, preferably can use 10 μ m～400 μ m.The particle diameter of carbon dust produces cohesion under the situation below the 0.1 μ m, be difficult to bring into play the effect of carbon dust, and the particle diameter of carbon dust owing to be not suitable for manufacturing process, is not preferred under the situation more than the 1000 μ m.
【0028】
As carbon dust preferably, log is fired at 750～1200 ℃, obtained hardwood carbon, log is fired at 400～750 ℃, obtain soft carbon, can use 250～450 ℃ of carbonizations 350～520 ℃ of carbonizations.
For example, as having that hardwood carbon can exemplify: (Quercus phillyraeoides) is log with black ridge oak, the long carbon of firing about 1200 ℃ fully etc.As having that soft carbon can exemplify: with red oak (Quercus acutissima), white oak (Quercus serrta Thunb) etc. is the charcoal of log.In addition, also be fit to use bamboo carbon or the carbon black and the activated carbon of the bamboo class that belongs to dogstail section (Gramineae).Particularly in the present invention, porous carbon dust such as charcoal or bamboo carbon preferably, the preferred long carbon fully that is to use.
【0029】
In the present invention, also can use the mixture of charcoal and/or bamboo carbon and carbon black.Utilize mixed carbon black, make more homodisperse of charcoal and bamboo carbon.In addition, by allocating carbon black into, can make urethane foam integral body have black.Allocating under the situation of carbon black, there is no particular limitation for its particle diameter, is 0.01～1 μ m.
【0030】
Allocating into than there is no particular limitation of charcoal and bamboo carbon and carbon black, weight ratio are charcoal and/or bamboo carbon: carbon black=1: 0.5～5, preferably 1: 1～3, more preferably 1: 1.5～2.5.The carbon black amount of allocating into is as 0.5 times less than the weight of charcoal and/or the bamboo carbon amount of allocating into, can not obtain allocating into the effect of carbon black, in addition, the carbon black amount of allocating into is as 5 times of the weight that surpasses charcoal and/or the bamboo carbon amount of allocating into, charcoal and/or the bamboo carbon amount of allocating into reduce relatively, water absorbability and deodorization reduce, and these situations are not preferred situations yet.
【0031】
The carbon dust amount of allocating into wishes to allocate 0.1 weight %～3.8 weight % into respect to polyhydroxy reactant, more preferably comprises 1.0 weight %～3.0 weight %.This is that in addition, as surpassing 3.8 weight %, adsorptive catalyst and water can not finely foam sometimes, so these situations are not preferred situations owing under the situation of the carbon dust amount of allocating into less than 0.1 weight %, can not obtain allocating into the effect of carbon dust.In the present invention, increase with the carbon dust amount of allocating into, it is harder that low bounce polyurethane foam body becomes, and some pressurization time of return is elongated.
【0032】
Whipping agent uses in making urethane foam in this way, and any whipping agent can use.Specifically, except the fluorine carbon compound of fluoro trichloromethane, methylene dichloride, dichloro two fluoro methane etc., what can exemplify has water, acid amides, nitro-paraffin or sodium bicarbonate, a volatile salt etc., preferably makes the mixture of the lower boiling organic compound of water or water and methylene dichloride etc.In the present invention, can only use a kind of in the described whipping agent, also can use two or more mixing back.
The whipping agent amount of allocating into specifically, can be adjusted into 1.0～6.0 weight parts with respect to polyhydroxy reactant 100 weight parts, preferably 1.8～5.0 weight parts for the amount of making in the general urethane foam of allocating into is just passable.Under the situation of the amount of allocating into that its reason is a whipping agent less than 1.0 weight parts, and surpass under the situation of 6.0 weight parts, all can not foam well, these situations are not preferred situations.
【0033】
Catalyzer is as using in making urethane foam, and any catalyzer can use.What specifically can exemplify has: except the tertiary amine class catalyzer of the tin class catalyzer of dibutyl tin two lauric acid salt, dibutyl tin diacetin, ス Na ス oleate etc., tripropyl amine, Triethylene Diamine, dimethylethanolamine, triethylamine, tetramethylethylened, N-methylmorpholine ketone, N-ethylmorpholine ketone etc., also have catalyzer, for example organo-metallic, organic acid of known urethaneization etc.In the present invention, can only use a kind of in the described catalyzer, also can use two or more mixing back.
The catalyzer amount of allocating in this way in making general urethane foam the amount of allocating into just passable, specifically, be adjusted into 0.01～5.0 weight part with respect to polyhydroxy reactant 100 weight parts, preferably 0.5～3.0 weight part.Its reason is as under the situation of the catalyzer amount of allocating into less than 0.01 weight part, and surpasses under the situation of 5.0 weight parts, all can not obtain good ammonia ester foams.
【0034】
Low bounce polyurethane foam body of the present invention contains the composition of above explanation in the described amount of allocating into, point pressurization time of return has 5～75 seconds, and can adjust arbitrarily by allocating composition into, so, low bounce polyurethane foam body of the present invention for example can be used for bench, chair, home-use chair babychair, automotive sheet etc., pillow, mattress, bed clothes, the bedding of bedclothes etc., or the inner operable absorption impact material of precision instrument or home computer's etc. packaging box or sole and shoe-pad etc., in the purposes of the use of wide range, the purpose of using, use in the object that uses.
In addition, carbon dust can adsorb stench and the moisture in the urethane foam.
In addition, carbon dust for example, is made low bounce polyurethane foam body of the present invention under the situation of bedding use because the far infrared rays effect is arranged, and can improve heat-insulating property.
【0035】
Low bounce polyurethane foam body of the present invention can be adjusted in the scope at 5～75 seconds at the pressurization of the point under 25 ℃ of temperature condition time of return.The point pressurization time of return of this scope can be brought into play desired function in various purposes.
【0036】
In detail, low bounce polyurethane foam body is under the situation of the cushioning material that is used for bench, chair, home-use chair babychair, automotive sheet etc., and adjusting described some pressurization time of return is about 5～25 seconds.Under the situation of the bedding that is used for pillow, mattress, bed clothes, bedclothes etc., adjusting some pressurization time of return is about 20～75 seconds.In addition, under the situation of operable absorption impact material such as the package interior that is used for precision instrument or home computer etc. and sole and shoe-pad etc., adjusting some pressurization time of return is about 45～75 seconds.
【0037】
Under the situation of the bedding that is used for described pillow, mattress, bed clothes, bedclothes etc., adjust some pressurization time of return to 20～75 second.In more detail, a pressurization time of return is adjusted to the bedding (following they are referred to as the bedding class) of 36～75 seconds pillow, mattress, bed clothes, bedclothes etc., be particularly suitable for preventing and improving the bedding class of bedsore.
【0038】
Reason with bedding class that 36～75 seconds low bounce polyurethane foam body of described some pressurization time of return is suitable as the prevention bedsore is as follows.
【0039】
At first, point of the present invention pressurization time of return is a yardstick of measuring " low elasticity ".In detail, grow under the situation of (more than 76 seconds) (just, the low bounce polyurethane foam body after the compression does not return original form) very much at a pressurization time of return, its low bounce polyurethane foam body is called does not have low elasticity (does not just have elastic force.)
Under the situation of some pressurization time of return long (just, the low bounce polyurethane foam body after the compression turns back to the time length of original form), be called the low elasticity height.(just elastic force is low.)
Under the situation of some pressurization time of return short (just, it is short that the low bounce polyurethane foam body after the compression turns back to the time of original form), it is low to be called low elasticity.(elastic force height just.)
【0040】
When the object of low bounce polyurethane foam body was pressed, " low elasticity " of these foams was high more, and along the deformation of unevenness of this body surface, it is big that both contacts area become.On the contrary, when the object of low bounce polyurethane foam body was pressed, " low elasticity " of these foams was low more, and both contacts area diminish.
Just, the point of low bounce polyurethane foam body of the present invention pressurization time of return is long more, and " low elasticity " uprises, so the contact area when contact with object becomes greatly, the pressure of generation disperses on contact surface.
【0041】
General, as at the pressure that applies on the capillary vessel more than the 32mmhg, produce metabolic disturbance, as oppress and continue more than 2 hours, capillary vessel begins necrosis because of ischemic causes cell.Like this, cause the generation bedsore.Therefore,, adjust or be adjusted in the pressure that contact surface produces, can make the bedding class of preventing and improving bedsore by adjusting or point of adjustment pressurization time of return.
Bedsore is particularly seen this symptom at the jog of bone outstanding position, particularly shoulder blade, sacrum, heel, outer ankle or hip etc. in each position of health.Therefore, concavo-convex with each position of health is applied to the pressure that bedsore produces the position by making the low bounce polyurethane foam body distortion, need alleviating.
【0042】
Owing to above reason, low bounce polyurethane foam body of the present invention preferably: some the pressurization time of return adjust to 36～75 seconds scopes.The low bounce polyurethane foam body of Tiao Zhenging is suitable for the bedding class like this, particularly becomes the good low bounce polyurethane foam body that can prevent and improve bedsore.
【0043】
In addition, in the mensuration of some pressurization time of return of the present invention, use the test rod of front end as the circular flat of diameter 25mm, its reason is that the transmitter portion of the body pressure time meter of measurement health and seat cushion contact part is 20～30mm scope, in addition, be easy to generate the scope at position (sacrum, heel) of bedsore in diameter 100mm.(with reference to non-patent literature 1) therefore, as point diameter is the test rod of the circular flat of 25mm as described in using, and can find that both have very high dependency.
[embodiment]
【0044】
Below, the present invention will be described in more detail with embodiment, but the invention is not restricted to these embodiment.
(preparation of sample)
With the composition shown in table 1～table 3, embodiment 1～14 and Comparative Examples 1～3 each sample have been prepared.The method of preparation is at first mixed the additive of polyhydroxy reactant, catalyzer and whipping agent and water etc. and fully long carbon.Make this polyhydroxy reactant and isocyanate composition mixing afterreaction.Being 20～80 ℃ at mold temperature mixes down and the reaction aftershaping.
The average functional group number of described polyhydroxy reactant is 2～4, hydroxyl value is the polyvalent alcohol of 80～120mgKOH/g, use the trade(brand)name ア Network ト コ one Le LR-00 (polyvalent alcohol 1) of Mitsui Takeda Chemical Co., Ltd's preparation, average functional group number is 2～4, hydroxyl value is the polyvalent alcohol of 150～210mgKOH/g, use the trade(brand)name ア Network ト コ one Le LR-03 (polyvalent alcohol 2) of Mitsui Takeda Chemical Co., Ltd's preparation, their allocation ratios by table 1～3 are mixed.
Linking agent uses dipropylene glycol, and catalyzer uses three to be total to trade(brand)name ダ Block コ 33LV (DABCO 33LV) (catalyzer 1), trade(brand)name Na イ ア Star Network ス (Niax A-1) (catalyzer 2) and the trade(brand)name エ ヌ シ one ア イ エ system (NC-IM) (catalyzer 3) that エ ア プ ロ ダ Network Star Co., Ltd. prepares.Isocyanate uses VT-80 (firmly changing the preparation of バ イ エ Le urethane Co., Ltd.), and the silicon surfactant uses SF-2908.
【0045】
For the embodiment 1～14 of described preparation and each sample of Comparative Examples 1～3, under 25 ℃ temperature condition, after applying certain load, remove this load, under the state of applying load that is recessed into fully not that forms because of load, measure the time of returning (some pressurization time of return).In addition, the bounce-back rate in the test is undertaken by JIS K 6400-3.The results are shown in table 1～3.
【0046】
(test example 1: embodiment 1～5/ is relevant to utilize that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and average functional group number are 2～4, hydroxyl value is the amount of allocating into of the polyvalent alcohol of 150～210mgKOH/g, adjusts the pressurize test of time of return of point)
【0047】
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Polyvalent alcohol 1 (weight part) | 10 | 30 | 50 | 70 | 90 |
| Polyvalent alcohol 2 (weight part) | 90 | 70 | 50 | 30 | 10 |
| Linking agent (weight part) | 3 | 3 | 3 | 3 | 3 |
| Water (weight part) | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| Catalyzer 1 (weight part) | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 |
| Catalyzer 2 (weight part) | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
| Catalyzer 3 (weight part) | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
| Silicon surfactant (weight part) | 1 | 1 | 1 | 1 | 1 |
| Isocyanate (index) | 90 | 90 | 90 | 90 | 90 |
| Be equipped with long carbon (398 μ m:50 order) (weight part) | - | - | - | - | - |
| Be equipped with long carbon (154 μ m:100 order) (weight part) | - | - | - | - | - |
| Be equipped with long carbon (77 μ m:200 order) (weight part) | 1 | 1 | 1 | 1 | 1 |
| Be equipped with long carbon (10 μ m) (weight part) | - | - | - | - | - |
| Point pressurization time of return (s) | 35 | 27 | 26 | 19 | 15 |
| Bounce-back property | 4 | 5 | 3 | 4 | 4 |
【0048】
(test example 2: embodiment 6～8, Comparative Examples 1/ change the index of isocyanate composition about with respect to polyhydroxy reactant, adjust a test of pressurization time of return)
【0049】
Table 2
| Embodiment 6 | Embodiment 7 | Embodiment 8 | Comparative Examples 1 | |
| Polyvalent alcohol 1 (weight part) | 30 | 30 | 30 | 30 |
| Polyvalent alcohol 2 (weight part) | 70 | 70 | 70 | 70 |
| Linking agent (weight part) | 3 | 3 | 3 | 3 |
| Water (weight part) | 1.2 | 1.2 | 1.2 | 1.2 |
| Catalyzer 1 (weight part) | 1.4 | 1.4 | 1.4 | 1.4 |
| Catalyzer 2 (weight part) | 0.03 | 0.03 | 0.03 | 0.03 |
| Catalyzer 3 (weight part) | 0.03 | 0.03 | 0.03 | 0.03 |
| Silicon surfactant (weight part) | 1 | 1 | 1 | 1 |
| Isocyanate (index) | 100 | 90 | 80 | 70 |
| Be equipped with long carbon (398 μ m:50 order) (weight part) | - | - | - | - |
| Be equipped with long carbon (154 μ m:100 order) (weight part) | - | - | - | - |
| Be equipped with long carbon (77 μ m:200 order) (weight part) | 1 | 1 | 1 | 1 |
| Be equipped with long carbon (10 μ m) (weight part) | - | - | - | - |
| Point pressurization time of return (s) | 19 | 27 | 75 | 152 |
| Bounce-back property | 17 | 5 | 1 | 0 |
【0050】
(test example 3: embodiment 9～14, Comparative Examples 2, the 3/ relevant carbon dust amount of allocating into that changes is adjusted the test of some pressurization time of return)
【0051】
Table 3
| Embodiment 9 | Embodiment 10 | Embodiment 11 | Embodiment 12 | Embodiment 13 | Embodiment 14 | Comparative Examples 2 | Comparative Examples 3 | |
| Polyvalent alcohol 1 (weight part) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Polyvalent alcohol 2 (weight part) | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 |
| Linking agent (weight part) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Water (weight part) | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| Catalyzer 1 (weight part) | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 |
| Catalyzer 2 (weight part) | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
| Catalyzer 3 (weight part) | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
| Silicon surfactant (weight part) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Isocyanate (index) | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 |
| Be equipped with long carbon (398 μ m:50 order) (weight part) | 1 | - | - | - | - | - | - | - |
| Be equipped with long carbon (154 μ m:100 order) (weight part) | - | 1 | - | - | - | - | - | - |
| Be equipped with long carbon (77 μ m:200 order) (weight part) | - | - | 1 | - | 2 | 3 | 4 | 5 |
| Be equipped with long carbon (10 μ m) (weight part) | - | - | - | 1 | - | - | - | - |
| Point pressurization time of return (s) | 31 | 28 | 27 | 28 | 63 | 71 | 105 | 199 |
| Bounce-back property | 4 | 5 | 5 | 3 | 2 | 2 | 2 | 2 |
【0052】
From the result of table 1～3 as can be seen, low bounce polyurethane foam body of the present invention has the some pressurization time of return that can adjust arbitrarily.
In detail, the amount of allocating into the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g increases (reducing with the amount of allocating into that average functional group number is 2～4, hydroxyl value is the polyvalent alcohol of 150～210mgKOH/g), it is soft that low bounce polyurethane foam body becomes, and some pressurization time of return shortens.On the other hand, the amount of allocating into the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g reduces (increasing with the amount of allocating into that average functional group number is 2～4, hydroxyl value is the polyvalent alcohol of 150～210mgKOH/g), the low bounce polyurethane foam body hardening, some pressurization time of return is elongated.
【0053】
As improving the index of isocyanate composition, the bounce-back of low bounce polyurethane foam body uprises with respect to polyhydroxy reactant, and some pressurization time of return shortens.On the other hand, with respect to the index of polyhydroxy reactant as reduction isocyanate composition, the bounce-back reduction of low bounce polyurethane foam body, some pressurization time of return is elongated.
【0054】
Increase with the carbon dust amount of allocating into, the low bounce polyurethane foam body hardening, some pressurization time of return is elongated.On the other hand, as reducing the carbon dust amount of allocating into, low bounce polyurethane foam body limbers up, and some pressurization time of return shortens.
【0055】
(test example 4): the pressure of measuring low bounce polyurethane foam body disperses
The mat of use embodiment 001～004 in following table 4, (height: 157.5cm, body weight: 48.5 kilograms, sex: the woman) become back floating position, (pressure distribution measuring system (FSA, VERG corporate system) has been carried out the pressure distribution measurement to the testee with time meter.The results are shown in table 5 and Fig. 1.
In addition, embodiment 001～004 use the water that in the model of long 195cm, wide 87cm, thick 50cm, makes the polyvalent alcohol that contains 100 weight parts, 3 parts by weight of cross-linking agent, 1.2 weight parts, 1.46 weight parts catalyzer, 1 weight part silicon surfactant, isocyanate (index 90), 1 weight part be equipped with the mat that long carbon foams.In addition, the pressure distribution under the state that does not use mat as a comparison case 001.
【0056】
Table 4
| Point pressurization time of return (second) | |
| Embodiment 001 | 27 |
| Embodiment 002 | 36 |
| Embodiment 003 | 75 |
| | 105 |
| Comparative Examples 001 |
【0057】
Table 5
| Peak pressure (mmHg) | |
| Embodiment 001 | 37 |
| Embodiment 002 | 29 |
| Embodiment 003 | 31 |
| | 59 |
| Comparative Examples 001 | 75 |
【0058】
As shown in table 5, be among 36 seconds the embodiment 002 at a pressurization time of return, confirm at the shoulder blade position to be 29mmhg.In addition, be among 75 seconds the embodiment 003 at a pressurization time of return, confirm in the back of head position to be 31mmhg.Therefore, the pressurization time of return is that 36～75 seconds low bounce polyurethane foam body is particularly suitable as the bedding class that can prevent and improve bedsore and uses.
Claims (7)
1. the manufacture method of a low bounce polyurethane foam body is characterized in that, comprising:
The operation of polyhydroxy reactant is mixed the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 150～210mgKOH/g, as polyhydroxy reactant;
The operation that adds the isocyanate composition is blended in the later isocyanate composition that adds in this polyhydroxy reactant to carbon dust,
Described polyhydroxy reactant utilizes in the scope of 10～90 weight % in the scope of the described average functional group number of the amount of allocating into arbitrarily is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and 90～10 weight % arbitrarily that the described average functional group number of the amount of allocating into is 2～4, hydroxyl value is the polyvalent alcohol of 150～210mgKOH/g, the amount of allocating into is 100 weight % by always being mixed into described two kinds of polyvalent alcohols, and a pressurization time of return is adjusted.
2. the manufacture method of a low bounce polyurethane foam body is characterized in that, comprising:
The operation of polyvalent alcohol is mixed the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 150～210mgKOH/g, as polyhydroxy reactant;
The operation that adds the isocyanate composition is blended in the later isocyanate composition that adds in this polyhydroxy reactant to carbon dust,
By with respect to described polyhydroxy reactant, in the isocyanate index is 72～100 scopes, add the described isocyanate composition of arbitrary characteristics, adjust a pressurization time of return.
3. the manufacture method of a low bounce polyurethane foam body is characterized in that, comprising:
The operation of polyvalent alcohol is mixed the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120mgKOH/g polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 150～210mgKOH/g, as polyhydroxy reactant;
The operation that adds the isocyanate composition is blended in the later isocyanate composition that adds in this polyhydroxy reactant to carbon dust,
By with respect to described polyhydroxy reactant, in the scope of 0.1 weight %～3.8 weight %, the interpolation described carbon dust of the amount of allocating into arbitrarily mixes, and adjusts a pressurization time of return.
4. low bounce polyurethane foam body, polyhydroxy reactant is for being the average functional group number of 10～90 weight % 2～4, hydroxyl value is the polyvalent alcohol of 80～120mgKOH/g, with the average functional group number of 90～10 weight % be 2～4, hydroxyl value is that the polyvalent alcohol of 150～210mgKOH/g mixes, always the amount of allocating into is 100 weight %, by this polyhydroxy reactant, it with respect to the isocyanate index of The polyhydroxy reactant 72～100 isocyanate composition, in the low bounce polyurethane foam body that constitutes with carbon dust, it is characterized in that some pressurization time of return can be adjusted in the scope at 36～75 seconds.
5. low bounce polyurethane foam body as claimed in claim 4 is characterized in that, with respect to described polyhydroxy reactant, allocates the described carbon dust of 0.1 weight %～3.8 weight % into.
6. as claim 4 or 5 described low bounce polyurethane foam bodies, it is characterized in that the particle diameter of described carbon dust is 0.1 μ m～1000 μ m.
7. the bedding that each described low bounce polyurethane foam body constitutes in the claim 4 to 6 as described.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2005114329 | 2005-04-12 | ||
| JP2005114329 | 2005-04-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619165B (en) * | 2008-07-01 | 2011-04-20 | 浙江省林业科学研究院 | Bamboo charcoal polyurethane foam composite material and production method thereof |
| CN102762133A (en) * | 2010-02-19 | 2012-10-31 | 井上株式会社 | Cushion pad and method for manufacturing same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4384050A (en) * | 1981-10-26 | 1983-05-17 | W. R. Grace & Co. | Flexible polyurethane foam based on MDI |
| JPH0689102B2 (en) * | 1987-06-19 | 1994-11-09 | 住友バイエルウレタン株式会社 | Method for manufacturing rigid polyurethane foam |
| US7432312B2 (en) * | 2004-04-28 | 2008-10-07 | Takashima Co., Ltd (Japan Corp) | Polyurethane foam having deodorization property or antibacterial effect |
-
2006
- 2006-04-10 KR KR1020060032315A patent/KR20060108223A/en not_active Application Discontinuation
- 2006-04-12 CN CNB2006100725302A patent/CN100572412C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619165B (en) * | 2008-07-01 | 2011-04-20 | 浙江省林业科学研究院 | Bamboo charcoal polyurethane foam composite material and production method thereof |
| CN102762133A (en) * | 2010-02-19 | 2012-10-31 | 井上株式会社 | Cushion pad and method for manufacturing same |
Also Published As
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| CN100572412C (en) | 2009-12-23 |
| KR20060108223A (en) | 2006-10-17 |
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