CN103910864A - Preparation method for block oligomeric dihydric alcohol with controllable structure - Google Patents
Preparation method for block oligomeric dihydric alcohol with controllable structure Download PDFInfo
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Abstract
The invention relates to block oligomeric dihydric alcohol with a controllable structure and a preparation method thereof. The main chain of the block oligomeric dihydric alcohol is a controllable block structure and is obtained by performing propoxylation or ethoxylation/propoxylation on polycarbonate, the terminal group is hydroxyl, the number-average molecular weight is 500-10000, and the molecular weight of carbonate chains and oxidized propylene/ethylene chains is adjustable. The preparation method of the block oligomeric dihydric alcohol comprises the following steps: firstly adding polycarbonate diol and a double-metal cyanide complex catalyst into a reaction kettle, heating to a certain temperature, and performing vacuum dewatering; then adding a part of an epoxide under the condition of 100-180 DEG C to perform an induction reaction, and after the induction reaction is finished, dropwise adding the residual epoxide; and after the reaction is finished, removing the unreacted epoxide to obtain oligomeric dihydric alcohol. The oligomeric dihydric alcohol is mainly applied to synthesis a polyurethane material.
Description
Technical field
The present invention relates to controlled low poly-dihydric alcohol of block type of a kind of structure and preparation method thereof, is a kind of preparation method of the low poly-dihydric alcohol of block type for the preparation of urethane specifically.
Background technology
Urethane is the macromolecular compound being obtained through polycondensation by isocyanic ester and polyvalent alcohol, and wherein polyol compound mainly comprises polyether glycol and the large class of polyester polyol two.Polyether glycol or polyester polyol are as the raw material of synthesis of polyurethane, and because of its structure difference, its polyurethane material of preparing respectively has relative merits.Prepare the deficiency of polyurethane material performance in order to make up independent use polyethers or polyester polyol, people's development research polyether ester product, wherein the patent such as CN101024684A, CN1431240A, US Patent5319006, US Patent20080021154, WO2012022048A1 is described method and the application of the dissimilar polyether ester product of preparation in detail.
PCDL is the extraordinary polyester polyol of a class, contains carbonate group and aliphatics repetitive unit of alkylidene on its molecular backbone chain.More regular because of its structure, molecular weight distribution is narrower, can prepare high-performance low-viscosity polyurethane resin; Because not containing common ester group in its molecular structure, its weather resistance is very excellent again.Compared with traditional polyester type or polyether(poly)urethane, polyurethane material prepared therefrom has better mechanical property, weathering resistance, anti-hydrolytic performance, thermotolerance, oxidation resistent susceptibility, wear resistance and chemical-resistant, but its shortcoming is price comparison costliness, under room temperature, mostly be waxy solid, and it is poor to prepare polyurethane material unit elongation by it.In polycarbonate diol structure, increase polyether segment, can, in keeping its premium properties, improve the physico-chemical property such as unit elongation, modulus of processing characteristics, low temperature kindliness, product.
The synthetic dibasic alcohol that simultaneously contains polycarbonate and polyether segment that had bibliographical information.The patents such as CN101611074B are described carbonic acid gas-epoxide in detail and are regulated copolymerization method to synthesize the method for the poly (propylene carbonate)-polyether glycol of blocked, but can only obtain the dibasic alcohol that contains poly (propylene carbonate) and polymerized thylene carbonate ethyl ester unit by this method, cannot synthesize and contain longer aliphatic carbon chain or the polycarbonate structure of alicyclic carbochain; And the distribution of polycarbonate and polyether segment is random, uncontrollable, its molecular structure is shown in formula 2 (Liu Baohua etc., utilize loop reactor to synthesize poly (propylene carbonate) polyvalent alcohol, gas chemical industry, the 3rd phase in 2007).
Formula 2
Summary of the invention
The invention provides controlled low poly-dihydric alcohol of block type of a kind of structure and preparation method thereof, solve in prior art and cannot synthesize chain segment length and the controlled low poly-dihydric alcohol problem of block type of structure.
The controlled low poly-dihydric alcohol of block type of structure provided by the invention is to contain blocked polycarbonate-polyether Glycols greater functionality unit, that structure is controlled; The controlled two layers of meaning that comprises of structure: the structure of polycarbonate fragment is controlled, in final blocked dibasic alcohol, the molecular weight of polycarbonate fragment and polyether segment is controlled, this means kind and the quantity of selection function unit as required.
The present invention is take self-control PCDL as raw material, take bimetallic cyanide complex (being called for short DMC) as catalyzer, ring-opening polymerization epoxide has made the low poly-dihydric alcohol of special block, in the molecular backbone chain structure of the low poly-dihydric alcohol of this block, contain aliphatic alkyl and/or alicyclic alkyl, carbonate group and ether, end group is hydroxyl, compared with common polyether ester dibasic alcohol, the low poly-dihydric alcohol of this block has the advantages such as tensile strength is large, modulus is large, hydrolytic resistance is good, viscosity is low, moderate, and overall performance is significantly better than common polyether ester product.
The technical solution used in the present invention is as follows:
The low poly-dihydric alcohol of block type that structure of the present invention is controlled, its structure as shown in Equation 1:
Formula 1
Wherein R
1, R
2and R
3there is aliphatic hydrocarbon groups or clicyclic hydrocarbon group or the alkoxyl group of 3～8 carbon atoms, R
1, R
2and R
3can be identical can be not identical yet; R
4and R
5for H or CH
3, R
4and R
5can be the same or different; M, n and k be>=1 positive integer; Described dibasic alcohol number-average molecular weight is 500～10000, preferably 1000～4000, and average functionality is 2; Chain carbonic ester is adjustable with the molecular weight of oxidation third (second) alkene segment.
The preparation method of the controlled low poly-dihydric alcohol of block type of structure of the present invention, comprises the steps:
(1) in reactor, add PCDL, bimetallic cyanide complex catalyst (being called for short DMC) to obtain the mixture a of PCDL and DMC, pass into nitrogen replacement air 1～3 time, open and stir, temperature is risen to 90～120 ℃, moisture content 1～2h in vacuum removal mixture a, obtains water-content lower than the PCDL of 0.05wt% and the mixture a ' of DMC; Moisture content in mixture a of the present invention is certain water absorbability because PCDL has, and absorbs due to moisture content.
(2) the mixture a ' step (1) being obtained is warming up to 100～180 ℃, then first a part of epoxide is joined and in reactor, carry out induced reaction, the epoxide that progressively drips again remainder after induced reaction completes continues reaction to reacting complete, remove unreacted epoxide, obtain the low poly-dihydric alcohol of product block type.
The number-average molecular weight of PCDL of the present invention is 300～5000, preferably 500～3000.
The molar ratio of epoxide of the present invention and PCDL is 3.5～180: 1, preferably 9～65: 1.
PCDL of the present invention is that aliphatic dihydroxy alcohol and/or alicyclic dibasic alcohol react and form through ester exchange polycondensation with the one or two or more in methylcarbonate, diethyl carbonate, diphenyl carbonate.
The preparation method of the controlled low poly-dihydric alcohol of block type of structure of the present invention, is characterized in that the described dmc catalyst of step (1) is Powdered dmc catalyst take the trimethyl carbinol as one of part and/or the trimethyl carbinol emulsion form dmc catalyst as one of part; Described emulsion form dmc catalyst refers to that dmc catalyst is the dmc catalyst that disperse phase, PCDL are external phase; Described dmc catalyst consumption accounts for 15～500ppm of PCDL and epoxide quality sum, preferably 30～100ppm.
Epoxide of the present invention is the mixture of propylene oxide or propylene oxide and oxyethane.
In the mixture of propylene oxide of the present invention and oxyethane, the shared massfraction of oxyethane is 0.1～50%, preferably 5～15%.
The preparation method of block dibasic alcohol of the present invention, is characterized in that: the massfraction that the described a part of epoxide of step (2) accounts for all epoxide is 2%～100%, preferably 20%～60%.
Aliphatic dihydroxy alcohol of the present invention and alicyclic dibasic alcohol refer to that carbon number is not less than 3 dibasic alcohol, preferably 1, 6-hexylene glycol, 1, 4-butyleneglycol, 1, 3-butyleneglycol, neopentyl glycol, glycol ether, dipropylene glycol, neopentyl glycol, dibromoneopentyl glycol, tetrabromo Dipentaerythritol, 2-methyl isophthalic acid, ammediol, 3-methyl isophthalic acid, 5-pentanediol, Triethylene glycol, 1, 4-hydroxymethyl-cyclohexane, cyclohexanediol, butyl ethyl propylene glycol, diethyl pentanediol, Rutgers 612, 1, 5-pentanediol and 1, one or two or more in the dibasic alcohol such as 8-ethohexadiol, more preferably 1, the one or two or more in 6-hexylene glycol, BDO, neopentyl glycol and Isosorbide-5-Nitrae-hydroxymethyl-cyclohexane.
The present invention compared with prior art has the following advantages:
1. the controlled low poly-dihydric alcohol of block type of structure of the present invention is a kind of dibasic alcohol of novel texture, its structure has following characteristics: (1) has the block structure of polycarbonate (centre)-polyethers (two ends), polycarbonate segment can be by different long-chain fat family's glycol and/or the synthetic polycarbonate diol structure of alicyclic dibasic alcohol, polyether segment is the copolymerization structure of polyoxytrimethylene or oxyethane and propylene oxide, and the regulation and control space of structure and performance is large; (2) oxidation third (second) alkene chain and chain carbonic ester molecular weight are adjustable.
2. the polyurethane material that uses the low poly-dihydric alcohol of block type of the present invention to make has the advantages such as tensile strength is large, modulus is moderate, aging resistance is good, viscosity is low, moderate, and overall performance is significantly better than existing common polyether ester, conventional polyester and common Contents In Polyether Polyol.
3. preparation method of the present invention is simple, and DMC catalysts concentration required in building-up process is lower, and constant product quality is good, can directly use without refining, and production cost is lower.
Accompanying drawing explanation
Fig. 1 is the hydrogen nuclear magnetic resonance spectrogram of the synthetic low poly-dihydric alcohol of block type of embodiment 1.
Fig. 2 is the infrared spectrogram of the synthetic low poly-dihydric alcohol of block type of embodiment 1.
Specific embodiment
Be below the oligomeric binary alcohol raw material of the controlled block type of composite structure PCDL, conventional polyester dibasic alcohol and bimetallic cyanide complex catalyst specification and performance perameter as a comparison case.
PCDL:
1, poly-carbonic acid-1,6-hexylene glycol ester, code name PCDL-1 (self-control), hydroxyl value is 112.0mgKOH/g, acid number 0.03mg KOH/g, moisture 0.05%, number-average molecular weight is 1002.
2, poly-carbonic acid-1,6-hexylene glycol ester, code name PCDL-2 (self-control), hydroxyl value is 74.0mgKOH/g, acid number 0.03mg KOH/g, moisture 0.05%, number-average molecular weight is 1516.
3, poly-carbonic acid-BDO ester, code name PCDL-3 (self-control), hydroxyl value is 222.5mgKOH/g, acid number 0.03mg KOH/g, moisture 0.05%, number-average molecular weight 504.
4, poly-carbonic acid-Isosorbide-5-Nitrae-bis-(methylol) hexanaphthene ester, code name PCDL-4 (self-control), hydroxyl value is 56.5mg KOH/g, acid number 0.03mg KOH/g, moisture 0.05%, number-average molecular weight 1986.
5, poly-carbonic acid-glycol ether ester, code name PCDL-5, hydroxyl value is 38.7mg KOH/g (self-control), acid number 0.03mg KOH/g, moisture 0.05%, number-average molecular weight 2899.
6, poly-carbonic acid-Xin/butanediol ester, code name PCDL-6, hydroxyl value is 45.1mg KOH/g (self-control), acid number 0.03mg KOH/g, moisture 0.05%, number-average molecular weight 2488.
The preparation method of PCDL is as follows:
Carbonic ether and dibasic alcohol are thrown in reactor according to proportioning metering in following table 1 by certain mol proportion, then to add consumption be the tetrabutyl titanate of the 0.25wt% of dibasic alcohol charging capacity, pass into N
2to get rid of air in reaction system, under normal pressure, heating makes temperature of reaction system rise to gradually 120 ℃, reaction 2h.Then improve gradually temperature of reaction system to 160 ℃, reaction 6h; Finally system temperature is risen to 180 ℃, then reduce gradually system absolute pressure to 8kPa, keeping absolute pressure is 8KPa transesterification reaction 4h, the then cooling corresponding PCDL (PCDL) that obtains certain relative molecular mass.
Table 1 material proportion
Polyester polyol:
7, polybutylene glyool adipate, the trade mark is XCP-1000H (rising sun river chemistry), and hydroxyl value is 113.5mg KOH/g, and acid number is 0.10mg KOH/g, moisture 0.05%, number-average molecular weight 989.
8, polybutylene glyool adipate, the trade mark is XCP-2000H (rising sun river chemistry), and hydroxyl value is 57.5mg KOH/g, and acid number is 0.10mg KOH/g, moisture 0.05%, number-average molecular weight 1951.
Bimetallic cyanide complex catalyst:
1, bimetallic cyanide complex catalyst A, code name DMC-A, the trimethyl carbinol is that the Powdered bimetallic cyanide complex catalyst DMC-B of one of part is the emulsion form bimetallic cyanide complex catalyst that the poly-carbonic acid hexylene glycol ester PCDL-2 of disperse phase, oligopolymer is external phase, and bimetallic cyanide complex catalyst content is 5wt%.
2, Powdered bimetallic cyanide complex catalyst B, code name is DMC-B, Huaian Ahmedabad urethane Science and Technology Ltd..
Product
1h NMR data (BRUKER AVANCE III400MHz, CDC1
3for solvent, TMS is interior mark): 1.10-1.15 (CH
3), 1.38-1.41 (CH
2-), 1.67-1.68 (CH
2-), 3.40-3.57 (CH
2-O-or-CH (CH
3hydrogen atom on the carbon being connected with oxygen in)-O-), 4.10-4.14 (COOCH
2-).
Ir data (Thermo Nexus470FT-IR, KBr, the σ/cm of product
-1): 3466.17 (v
-oH), 1744.46 (v
-C=o), 1259.40 (v
-o-C-o), 2866.89,2933.21,2969.82 (v
-CH2-).
Embodiment 1: the preparation of the low poly-dihydric alcohol of a kind of block type, its preparation method is:
(1) be in the withstand voltage stainless steel cauldron of 1L to volume, add 200g PCDL PCDL-1,0.0123g bimetallic cyanide complex catalyst DMC-B, nitrogen replacement air 2 times, opens and stirs, and is heated to 110 ℃, vacuum removal moisture 1h.
(2) be then warming up to 120 ℃, first 53g propylene oxide is joined in the reactor in above-mentioned (1) and carries out induced reaction, after completing, induced reaction progressively drips remaining 158g propylene oxide, after completion of the reaction, remove unreacted propylene oxide, obtain the low poly-dihydric alcohol of block type, yield is 99.2%, and measuring hydroxyl value by phthalic anhydride-pyridine method (GB/T12008.3-2009) is 56.8mg KOH/g, and molecular-weight average is 1975.
Product structure formula is:
Comparative example 1: a kind of common polyether ester dibasic alcohol preparation, its preparation method is:
(1) be in the withstand voltage stainless steel cauldron of 1L to volume, add 200g polyester diol XCP-1000H, 0.0123g bimetallic cyanide complex catalyst DMC-B, nitrogen replacement air 2 times, opens and stirs, and is heated to 110 ℃, vacuum removal moisture 1h.
(2) be then warming up to 120 ℃, first 53g propylene oxide is joined in the reactor in above-mentioned (1) and carries out induced reaction, after completing, induced reaction progressively drips remaining 158g propylene oxide, after completion of the reaction, remove unreacted propylene oxide, obtain common polyether ester dibasic alcohol, yield is 98.9%, and measuring hydroxyl value by phthalic anhydride-pyridine method (GB/T12008.3-2009) is 57.2mg KOH/g, and molecular-weight average is 1962.
Product structure formula is:
Embodiment 2: the preparation of the low poly-dihydric alcohol of a kind of block type, its preparation method is:
(1) be in the withstand voltage stainless steel cauldron of 1L to volume, add 200g PCDL PCDL-2,0.628g bimetallic cyanide complex catalyst DMC-A, nitrogen replacement air 3 times, opens and stirs, and is heated to 120 ℃, vacuum removal moisture 1h.
(2) be then warming up to 130 ℃, first 128g propylene oxide is joined in the reactor in above-mentioned (1) and carries out induced reaction, after completing, induced reaction progressively drips remaining 300g propylene oxide, after completion of the reaction, remove unreacted propylene oxide, obtain the low poly-dihydric alcohol of block type, yield is 98.8%, and measuring hydroxyl value by phthalic anhydride-pyridine method (GB/T12008.3-2009) is 25.2mg KOH/g, and molecular-weight average is 4452.
Product structure formula is:
Embodiment 3: the preparation of the low poly-dihydric alcohol of a kind of block type, its preparation method is:
(1) be in the withstand voltage stainless steel cauldron of 1L to volume, add 200g PCDL PCDL-3,0.0404g bimetallic cyanide complex catalyst DMC-B, nitrogen replacement air 3 times, opens and stirs, and is heated to 110 ℃, vacuum removal moisture 1h.
(2) be then warming up to 120 ℃, first 122g propylene oxide and oxyethane mixture (propylene oxide and oxyethane mol ratio are 9: 1) are joined in the reactor in above-mentioned (1) and carry out induced reaction, after completing, induced reaction progressively drips remaining 82g propylene oxide and oxyethane mixture (propylene oxide and oxyethane mol ratio are 9: 1), after completion of the reaction, remove unreacted epoxide, obtain the low poly-dihydric alcohol of block, yield is 99.0%, measuring hydroxyl value by phthalic anhydride-pyridine method (GB/T12008.3-2009) is 111.5mgKOH/g, molecular-weight average is 1006.
Product structure formula is:
Embodiment 4: the preparation of the low poly-dihydric alcohol of a kind of block type, its preparation method is:
(1) be in the withstand voltage stainless steel cauldron of 1L to volume, add 150g PCDL PCDL-4,0.05625g bimetallic cyanide complex catalyst DMC-B, nitrogen replacement air 2 times, opens and stirs, and is heated to 120 ℃, vacuum removal moisture 1h.
(2) be then warming up to 150 ℃, first 82g propylene oxide is joined in the reactor in above-mentioned (1) and carries out induced reaction, after completing, induced reaction progressively drips remaining 330g propylene oxide, after completion of the reaction, remove unreacted propylene oxide, obtain the low poly-dihydric alcohol of block, yield is 98.5%, and measuring hydroxyl value by phthalic anhydride-pyridine method (GB/T12008.3-2009) is 16.5mg KOH/g, and molecular-weight average is 6800.
Embodiment 5: the preparation of the low poly-dihydric alcohol of a kind of block type, its preparation method is:
(1) be in the withstand voltage stainless steel cauldron of 1L to volume, add 200g PCDL PCDL-5,0.02508g bimetallic cyanide complex catalyst DMC-B, nitrogen replacement air 3 times, opens and stirs, and is heated to 120 ℃, vacuum removal moisture 1h.
(2) be then warming up to 160 ℃, first 109g propylene oxide is joined in the reactor in above-mentioned (1) and carries out induced reaction, after completing, induced reaction progressively drips remaining 109g propylene oxide, after completion of the reaction, remove unreacted propylene oxide, obtain polycarbonate-polyether Glycols, yield is 98.6%, and measuring hydroxyl value by phthalic anhydride-pyridine method (GB/T12008.3-2009) is 19.0mg KOH/g, and molecular-weight average is 5905.
Product structure formula is:
Embodiment 6: the preparation of the low poly-dihydric alcohol of a kind of block type, its preparation method is:
(1) be in the withstand voltage stainless steel cauldron of 1L to volume, add 200g PCDL PCDL-6,0.00489g bimetallic cyanide complex catalyst DMC-B, nitrogen replacement air 1 time, opens and stirs, and is heated to 120 ℃, vacuum removal moisture 1h.
(2) be then warming up to 130 ℃, first 100g propylene oxide is joined in the reactor in above-mentioned (1) and carries out induced reaction, after completing, induced reaction progressively drips remaining 25g propylene oxide and oxyethane mixture (propylene oxide and oxyethane mol ratio are 5: 1), after completion of the reaction, remove unreacted propylene oxide, obtain above-mentioned low poly-dihydric alcohol, yield is 99.0%, measuring hydroxyl value by phthalic anhydride-pyridine method (GB/T12008.3-2009) is 28.0mg KOH/g, and molecular-weight average is 4007.
Product structure formula is:
Application Example 1
Take the block glycol products in above-described embodiment 1 and comparative example 1 and polycarbonate polyol PCDL-2 and conventional polyester polyvalent alcohol XCP-2000H as raw material, utilize acetone synthesis method synthesis of polyurethane emulsion respectively, its mechanical property and aging resistance refer to following table 2.
The performance test of table 2 polyaminoester emulsion
From data in table 2, four reactive behavioies are suitable, and polycarbonate diol (PCDL) has advantages of that breaking tenacity is large, modulus is large, anti-hydrolytic performance is good, but poor toughness, elongation at break are low; And that the main drawback of conventional polyester polyvalent alcohol is hydrolytic resistance is poor; Embodiment 1 product (the low poly-dihydric alcohol of block) all can meet formula requirement aspect breaking tenacity, modulus and elongation at break, and anti-hydrolytic performance is splendid, and aspect above-mentioned four key indexs, be all better than comparative example 1 product (common polyether ester dibasic alcohol).
Claims (9)
1. the controlled low poly-dihydric alcohol of block type of structure, its structure as shown in Equation 1:
Formula 1
Wherein R
1, R
2and R
3there is aliphatic hydrocarbon groups or clicyclic hydrocarbon group or the alkoxyl group of 3～8 carbon atoms, R
1, R
2and R
3can be identical can be not identical yet; R
4and R
5for H or CH
3, R
4and R
5can be the same or different; M, n and k be>=1 positive integer; Described dibasic alcohol number-average molecular weight is 500～10000, and chain carbonic ester is adjustable with the molecular weight of oxidation third (second) alkene segment.
2. a method of preparing the controlled low poly-dihydric alcohol of block type of structure claimed in claim 1, comprises the steps:
(1) in reactor, add PCDL and dmc catalyst to obtain the mixture a of PCDL and DMC, pass into nitrogen replacement air 1～3 time, then open and stir, temperature is risen to 90～120 ℃, moisture content 1～2h in vacuum removal mixture a, obtains water content and is less than the PCDL of 0.05wt% and the mixture a ' of DMC;
(2) the mixture a ' step (1) being obtained is warming up to 100～180 ℃, then first a part of epoxide is joined and in reactor, carry out induced reaction, the epoxide that progressively drips again remainder after induced reaction completes continues reaction to reacting complete, remove unreacted epoxide, obtain the low poly-dihydric alcohol of product block type.
3. preparation method according to claim 2, is characterized in that: described epoxide and the molar ratio of PCDL are 3.5～180: 1, preferably 9～65: 1.
4. preparation method according to claim 2, is characterized in that: the described PCDL of step (1) is that aliphatic dihydroxy alcohol and/or alicyclic dibasic alcohol react and form through ester exchange polycondensation with the one or two or more in methylcarbonate, diethyl carbonate and diphenyl carbonate.
5. preparation method according to claim 2, is characterized in that: the described dmc catalyst of step (1) is Powdered dmc catalyst take the trimethyl carbinol as one of part and/or the trimethyl carbinol emulsion form dmc catalyst as one of part; Described emulsion form dmc catalyst refers to that dmc catalyst is the dmc catalyst that disperse phase, PCDL are external phase; Described dmc catalyst consumption accounts for 15～500ppm of PCDL and epoxide quality sum, preferably 30～100ppm.
6. preparation method according to claim 2, is characterized in that: the described epoxide of step (2) is the mixture of propylene oxide or propylene oxide and oxyethane.
7. preparation method according to claim 6, is characterized in that: in the mixture of propylene oxide and oxyethane, the shared massfraction of oxyethane is 0.1～50%, preferably 5～15%.
8. preparation method according to claim 2, is characterized in that: the massfraction that the described a part of epoxide of step (2) accounts for all epoxide is 2%～100%, preferably 20%～60%.
9. preparation method according to claim 4, it is characterized in that: aliphatic dihydroxy alcohol and alicyclic dibasic alcohol refer to that carbon number is not less than 3 dibasic alcohol, preferably 1, 6-hexylene glycol, 1, 4-butyleneglycol, 1, 3-butyleneglycol, neopentyl glycol, glycol ether, dipropylene glycol, neopentyl glycol, dibromoneopentyl glycol, tetrabromo Dipentaerythritol, 2-methyl isophthalic acid, ammediol, 3-methyl isophthalic acid, 5-pentanediol, Triethylene glycol, 1, 4-hydroxymethyl-cyclohexane, cyclohexanediol, butyl ethyl propylene glycol, diethyl pentanediol, Rutgers 612, 1, 5-pentanediol and 1, one or two or more in 8-ethohexadiol dibasic alcohol.
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| CN107522834B (en) * | 2017-08-17 | 2020-10-23 | 张家港晟新和新材料有限公司 | Preparation method of water glass polyurethane flame-retardant material |
| CN107574689A (en) * | 2017-09-04 | 2018-01-12 | 上海维胜化工有限公司 | A kind of nonionic low-foaming penetrating agent and preparation method thereof |
| CN114479049A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Triphenylmethane polyether carboxylateComposition and preparation method thereof, and extra-heavy oil and super-heavy oil CO2Mining method |
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