CN107353393A - A kind of castor oil modified polyurethane resin and preparation method thereof - Google Patents
A kind of castor oil modified polyurethane resin and preparation method thereof Download PDFInfo
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- CN107353393A CN107353393A CN201710710730.4A CN201710710730A CN107353393A CN 107353393 A CN107353393 A CN 107353393A CN 201710710730 A CN201710710730 A CN 201710710730A CN 107353393 A CN107353393 A CN 107353393A
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- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6629—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
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- 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
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
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- 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
- C08G18/3206—Polyhydroxy compounds aliphatic
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- 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
- C08G18/3225—Polyamines
- C08G18/3234—Polyamines cycloaliphatic
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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
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
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- 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
- C08G18/36—Hydroxylated esters of higher fatty acids
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- 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
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
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- 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
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
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- 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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
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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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/6696—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to a kind of castor oil modified polyurethane resin and preparation method thereof.The castor oil modified polyurethane resin is made up of each component of following proportioning：The parts by weight of polyalcohol A 10 20, the parts by weight of polyalcohol B 20 40, the parts by weight of castor oil 8 10, the parts by weight of isocyanates 20 45, the parts by weight of hydrophilic chain extender 58, the parts by weight of diol chain-extension agent 13, the parts by weight of diamine chain stretching agent 35, the parts by weight of salt forming agent 67, the parts by weight of solvent orange 2 A 100 200, the parts by weight of solvent B 8 16.Castor oil modified polyurethane resin heat resistance energy of the present invention and thoroughly photosensitive pool are well.
Description
Technical field
The present invention relates to field of macromolecule polymerization, the more particularly to a kind of good poly- ammonia of heat resistance applied to synthetic leather
Ester resin and preparation method thereof.
Background technology
At present, the use of synthetic leather class articles for use is more and more common, and synthetic leather industry obtains fast development, while also accelerates
The exploitation of use for synthetic leather polyurethane resin.How the Research Emphasis of existing polyurethane resin improves through polyurethane tree if being mostly focused on
The external performances such as feel, gloss and the pliability of synthetic leather after fat processing so that the practical performance such as heat resistance of synthetic leather
It is so not very good.Therefore, the heat resistance for how improving synthetic leather is asked as polyurethane resin field technology urgently to be resolved hurrily
Topic.
The content of the invention
It is an object of the invention to provide the good polyurethane resin of a kind of heat resistance and saturating photosensitive pool.
The castor oil modified polyurethane resin of the present invention is achieved through the following technical solutions：
According to a kind of castor oil modified polyurethane resin of the present invention, it is made up of each component of following proportioning：Polyalcohol A
10-20 parts by weight, polyalcohol B 20-40 parts by weight, castor oil 8-10 parts by weight, isocyanates 20-45 parts by weight, hydrophilic chain extension
Agent 5-8 parts by weight, diol chain-extension agent 1-3 parts by weight, diamine chain stretching agent 3-5 parts by weight, salt forming agent 6-7 parts by weight, solvent orange 2 A
100-200 parts by weight, solvent B 8-16 parts by weight.
Further, polyalcohol A is polyadipate neopentyl glycol polyalcohol, or polyalcohol A is that polypropylene glycol polyethers is more
First alcohol.
Further, polyalcohol B is PTMG.
Further, isocyanates is IPDI, toluene di-isocyanate(TDI), the isocyanic acid of hexa-methylene two
One kind in ester.
Further, hydrophilic chain extender is dihydromethyl propionic acid.
Further, diol chain-extension agent is trimethylolpropane, or diol chain-extension agent is neopentyl glycol.
Further, diamine chain stretching agent is IPD.
Further, salt forming agent is triethylamine.
Further, solvent orange 2 A is deionized water, and solvent B is N-methyl pyrrolidones.
A kind of preparation method of above-mentioned castor oil modified polyurethane resin, is comprised the steps of：
1) polyalcohol A, polyalcohol B and castor oil are put into reaction vessel according to weight ratio, stirs and be heated to
100-110 DEG C of insulation dehydration 0.5-1.5h；
2) mixture is cooled to 40-60 DEG C, and be incubated according to weight than adding isocyanates after being warming up to 70-90 DEG C
1-2h hours fully react；
3) nco value detection is carried out to mixture, if detected value, within 8-30%, mixture is qualified；
4) step 3) is detected into qualified mixture and is cooled to 40-60 DEG C, and compared according to weight and add hydrophilic chain extender, two
Alcohol chain extender and solvent B, after being warming up to 60-70 DEG C be incubated 2-3h hours fully react；
5) nco value detection is carried out to mixture, if detected value, within 2-9%, mixture is qualified；
6) step 5) is detected into qualified mixture and is cooled to 50-70 DEG C, add acetone viscosity reduction；
7) continue to be cooled to 40-60 DEG C, and neutralized according to weight than adding salt forming agent into salt；
8) solvent orange 2 A is added according to weight ratio while stirring, disperses 2-5min, wherein, speed of agitator 1500r/min；
9) by meet weight than diamine chain stretching agent diluted with frozen water after add mixture in, disperse 6-15min；
10) acetone in mixture is removed under reduced pressure, and is uniformly mixing to obtain castor oil modified polyurethane resin.
Due to using above technical scheme, the present invention has the following advantages that compared with prior art：
1. castor oil has the advantages that cheap, wide material sources, nontoxic pollution-free, same time-division as renewable resource
Hydroxyl is carried in minor structure, directly can be reacted using castor oil as soft chain segment and isocyanates.
2. polyfunctional group and substantial amounts of double bond due to castor oil, it may be such that polyurethane material produces crosslinking and improves material
The heat resistance of material, the high temperature embossing available for synthetic leather rear section processing；
3. the castor oil modified polyurethane resin according to the present invention has excellent saturating sense and gloss, synthetic leather material can be improved
The surface sense organ of material.
Embodiment
Below by embodiment, technical solution of the present invention is described in detail, but protection scope of the present invention not office
It is limited to the embodiment.
Embodiment 1
The castor oil modified polyurethane resin of the embodiment of the present invention 1 is made up of each component of following proportioning：
The preparation method of the castor oil modified polyurethane resin of the embodiment of the present invention 1, comprises the following steps：
1) 50g polyadipate neopentyl glycol polyalcohols, 100g PTMGs and 30g castor oil are put into four mouthfuls
In flask, stirring and being heated to 105 DEG C of insulations is dehydrated 1h；
2) mixture is cooled to 50 DEG C, and adds 107.2g IPDIs, be incubated after being warming up to 85 DEG C
1.5h hours fully react；
3) nco value detection is carried out to mixture, gained detected value is 12%, and the mixture is qualified；
4) qualified mixture obtained by step 3) is cooled to 50 DEG C, and adds 22.5g dihydromethyl propionic acids, 6.3g new penta 2
Alcohol and 40g N-methyl pyrrolidones, after being warming up to 65 DEG C be incubated 2.5h hours fully react；
5) nco value detection is carried out to mixture, gained detected value is 3%, and the mixture is qualified；
6) qualified mixture obtained by step 5) is cooled to 60 DEG C, adds 40g acetone viscosity reductions；
7) continue to be cooled to 50 DEG C, and add 17g triethylamines and neutralize into salt；
8) mixture is stirred with 1500r/min mixing speed, while adds 550g deionized waters, disperseed
2min；
9) added after 13.4g IPDs are diluted with frozen water in mixture, disperse 10min；
10) acetone in mixture is removed under reduced pressure, and is uniformly mixing to obtain castor oil modified polyurethane resin.
Embodiment 2
The castor oil modified polyurethane resin of the embodiment of the present invention 2 is made up of each component of following proportioning：
The preparation method of the castor oil modified polyurethane resin of the embodiment of the present invention 2, comprises the following steps：
1) by 10g polypropylene glycol PPGs, 40g PTMGs and 9g castor oil input four-hole boiling flask
In, stirring and being heated to 100 DEG C of insulations is dehydrated 1.2h；
2) mixture is cooled to 60 DEG C, and adds 30g toluene di-isocyanate(TDI)s, after being warming up to 75 DEG C be incubated 2h hours fill
Divide reaction；
3) nco value detection is carried out to mixture, gained detected value is 23%, and the mixture is qualified；
4) qualified mixture obtained by step 3) is cooled to 40 DEG C, and adds 5g dihydromethyl propionic acids, 2g trihydroxy methyls third
Alkane and 16g N-methyl pyrrolidones, after being warming up to 60 DEG C be incubated 3h hours fully react；
5) nco value detection is carried out to mixture, gained detected value is 6%, and the mixture is qualified；
6) qualified mixture obtained by step 5) is cooled to 50 DEG C, adds 10g urea viscosity reductions；
7) continue to be cooled to 40 DEG C, and add 6g triethylamines and neutralize into salt；
8) mixture is stirred with 1500r/min mixing speed, while adds 120g deionized waters, disperseed
3min；
9) added after 4.2g IPDs are diluted with frozen water in mixture, disperse 15min；
10) urea in mixture is removed under reduced pressure, and is uniformly mixing to obtain castor oil modified polyurethane resin.
Embodiment 3
The castor oil modified polyurethane resin of the embodiment of the present invention 3 is made up of each component of following proportioning：
The preparation method of the castor oil modified polyurethane resin of the embodiment of the present invention 3, comprises the following steps：
1) 15g polyadipate neopentyl glycol polyalcohols, 20g PTMGs and 8g castor oil are put into four mouthfuls of burnings
In bottle, stirring and being heated to 110 DEG C of insulations is dehydrated 0.5h；
2) mixture is cooled to 60 DEG C, and adds 20g IPDIs, it is small that 1h is incubated after being warming up to 90 DEG C
When fully react；
3) nco value detection is carried out to mixture, gained detected value is 8%, and the mixture is qualified；
4) qualified mixture obtained by step 3) is cooled to 60 DEG C, and adds 6g dihydromethyl propionic acids, 3g neopentyl glycols and
8g N-methyl pyrrolidones, after being warming up to 70 DEG C be incubated 2h hours fully react；
5) nco value detection is carried out to mixture, gained detected value is 2%, and the mixture is qualified；
6) qualified mixture obtained by step 5) is cooled to 70 DEG C, adds 16g urea viscosity reductions；
7) continue to be cooled to 60 DEG C, and add 6.3g triethylamines and neutralize into salt；
8) mixture is stirred with 1500r/min mixing speed, while adds 200g deionized waters, disperseed
4min；
9) added after 5g IPDs are diluted with frozen water in mixture, disperse 12min；
10) urea in mixture is removed under reduced pressure, and is uniformly mixing to obtain castor oil modified polyurethane resin.
Embodiment 4
The castor oil modified polyurethane resin of the embodiment of the present invention 4 is made up of each component of following proportioning：
The preparation method of the castor oil modified polyurethane resin of the embodiment of the present invention 4, comprises the following steps：
1) by 18g polypropylene glycol PPGs, 30g PTMGs and 10g castor oil input four-hole boiling flask
In, stirring and being heated to 103 DEG C of insulations is dehydrated 1.5h；
2) mixture is cooled to 45 DEG C, and adds 35g hexamethylene diisocyanates, 1.2h is incubated after being warming up to 70 DEG C
Hour fully reaction；
3) nco value detection is carried out to mixture, gained detected value is 20%, and the mixture is qualified；
4) qualified mixture obtained by step 3) is cooled to 45 DEG C, and adds 7g dihydromethyl propionic acids, 2.2g trihydroxy methyls
Propane and 10g N-methyl pyrrolidones, after being warming up to 63 DEG C be incubated 2.5h hours fully react；
5) nco value detection is carried out to mixture, gained detected value is 5%, and the mixture is qualified；
6) qualified mixture obtained by step 5) is cooled to 55 DEG C, adds 8g acetone viscosity reductions；
7) continue to be cooled to 45 DEG C, and add 6.5g triethylamines and neutralize into salt；
8) mixture is stirred with 1500r/min mixing speed, while adds 180g deionized waters, disperseed
5min；
9) added after 3g IPDs are diluted with frozen water in mixture, disperse 8min；
10) acetone in mixture is removed under reduced pressure, and is uniformly mixing to obtain castor oil modified polyurethane resin.
Embodiment 5
The castor oil modified polyurethane resin of the embodiment of the present invention 5 is made up of each component of following proportioning：
The preparation method of the castor oil modified polyurethane resin of the embodiment of the present invention 5, comprises the following steps：
1) 20g polyadipate neopentyl glycol polyalcohols, 36g PTMGs and 9.2g castor oil are put into four mouthfuls
In flask, stirring and being heated to 106 DEG C of insulations is dehydrated 0.8h；
2) mixture is cooled to 55 DEG C, and adds 45g IPDIs, 1.8h is incubated after being warming up to 80 DEG C
Hour fully reaction；
3) nco value detection is carried out to mixture, gained detected value is 30%, and the mixture is qualified；
4) qualified mixture obtained by step 3) is cooled to 55 DEG C, and adds 8g dihydromethyl propionic acids, 1g neopentyl glycols and
13g N-methyl pyrrolidones, after being warming up to 68 DEG C be incubated 3h hours fully react；
5) nco value detection is carried out to mixture, gained detected value is 9%, and the mixture is qualified；
6) qualified mixture obtained by step 5) is cooled to 65 DEG C, adds 12g urea viscosity reductions；
7) continue to be cooled to 55 DEG C, and add 7g triethylamines and neutralize into salt；
8) mixture is stirred with 1500r/min mixing speed, while adds 100g deionized waters, disperseed
4min；
9) added after 3.5g IPDs are diluted with frozen water in mixture, disperse 6min；
10) urea in mixture is removed under reduced pressure, and is uniformly mixing to obtain castor oil modified polyurethane resin.
Table 1 shows the castor oil modified polyurethane resin and the heat of conventional urethane (comparative example) of above-described embodiment preparation
Performance：
Table 1
Test result shows：It is far high using the thermal decomposition initial temperature and final temperature of the polyurethane resin according to the present invention
In comparative example, and weight-loss ratio is below comparative example after pyrolytic, and heat resistance significantly improves.
Presently preferred embodiments of the present invention is the foregoing is only, is not used for limiting the practical range of the present invention；If do not take off
From the spirit and scope of the present invention, the present invention is modified or equivalent substitution, all should covered in the claims in the present invention
Among protection domain.
Claims (10)
1. a kind of castor oil modified polyurethane resin, it is characterised in that be made up of each component of following proportioning：Polyalcohol A 10-
20 parts by weight, polyalcohol B 20-40 parts by weight, castor oil 8-10 parts by weight, isocyanates 20-45 parts by weight, hydrophilic chain extender
5-8 parts by weight, diol chain-extension agent 1-3 parts by weight, diamine chain stretching agent 3-5 parts by weight, salt forming agent 6-7 parts by weight, solvent orange 2 A 100-
200 parts by weight, solvent B 8-16 parts by weight.
2. castor oil modified polyurethane resin according to claim 1, it is characterised in that the polyalcohol A for gather oneself two
Sour neopentyl glycol polyalcohol, or the polyalcohol A are polypropylene glycol PPG.
3. castor oil modified polyurethane resin according to claim 1, it is characterised in that the polyalcohol B is poly- tetrahydrochysene
Furans ether glycol.
4. castor oil modified polyurethane resin according to claim 1, it is characterised in that the isocyanates is different Fo Er
Ketone diisocyanate, toluene di-isocyanate(TDI), one kind in hexamethylene diisocyanate.
5. castor oil modified polyurethane resin according to claim 1, it is characterised in that the hydrophilic chain extender is dihydroxy
Methylpropanoic acid.
6. castor oil modified polyurethane resin according to claim 1, it is characterised in that the diol chain-extension agent is three hydroxyls
Methylpropane, or the diol chain-extension agent are neopentyl glycol.
7. castor oil modified polyurethane resin according to claim 1, it is characterised in that the diamine chain stretching agent is different Buddhist
That ketone diamines.
8. castor oil modified polyurethane resin according to claim 1, it is characterised in that the salt forming agent is triethylamine.
9. castor oil modified polyurethane resin according to claim 1, it is characterised in that the solvent orange 2 A is deionized water,
The solvent B is N-methyl pyrrolidones.
A kind of 10. preparation method of the castor oil modified polyurethane resin described in any one of claim 1-7, it is characterised in that
Comprise the steps of：
1) according to weight ratio by polyalcohol A, in polyalcohol B and castor oil input reaction vessel, stir and be heated to 100-
110 DEG C of insulation dehydration 0.5-1.5h；
2) mixture is cooled to 40-60 DEG C, and 1-2h is incubated after being warming up to 70-90 DEG C than adding isocyanates according to weight
Hour fully reaction；
3) nco value detection is carried out to mixture, if detected value, within 8-30%, mixture is qualified；
4) step 3) is detected into qualified mixture and is cooled to 40-60 DEG C, and expanded according to weight than adding hydrophilic chain extender, glycol
Chain agent and solvent B, after being warming up to 60-70 DEG C be incubated 2-3h hours fully react；
5) nco value detection is carried out to mixture, if detected value, within 2-9%, mixture is qualified；
6) step 5) is detected into qualified mixture and is cooled to 50-70 DEG C, add acetone viscosity reduction；
7) continue to be cooled to 40-60 DEG C, and neutralized according to weight than adding salt forming agent into salt；
8) solvent orange 2 A is added according to weight ratio while stirring, disperses 2-5min, wherein, speed of agitator 1500r/min；
9) by meet weight than diamine chain stretching agent diluted with frozen water after add mixture in, disperse 6-15min；
10) acetone in mixture is removed under reduced pressure, and is uniformly mixing to obtain castor oil modified polyurethane resin.
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| CN110041493A (en) * | 2019-05-10 | 2019-07-23 | 广东彩格科技有限公司 | A kind of extinction type aqueous polyurethane emulsion and preparation method thereof |
| CN113087954A (en) * | 2021-04-06 | 2021-07-09 | 晋江森大鞋材有限公司 | Preparation method of environment-friendly breathable polyurethane insole |
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