CN105504197B - A kind of preparation method and products therefrom of closed pore agent - Google Patents

A kind of preparation method and products therefrom of closed pore agent Download PDF

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CN105504197B
CN105504197B CN201510956394.2A CN201510956394A CN105504197B CN 105504197 B CN105504197 B CN 105504197B CN 201510956394 A CN201510956394 A CN 201510956394A CN 105504197 B CN105504197 B CN 105504197B
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closed pore
toluene
agent
isocyanate
tdi
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CN105504197A (en
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杨京学
马丙木
杨继彬
宫怀叡
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Jiangxi Hesheng Antai New Materials Co ltd
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Aegis Fire Prevention Science And Technology Ltd
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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
    • C08G18/341—Dicarboxylic acids, esters of polycarboxylic acids containing two carboxylic acid groups
    • 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
    • C08G18/4833—Polyethers containing oxyethylene units
    • 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
    • C08G18/65—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
    • C08G18/6692—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/34
    • 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
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
    • 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
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/141—Hydrocarbons
    • 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
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/143—Halogen containing compounds
    • C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
    • C08J9/145—Halogen containing compounds containing carbon, halogen and hydrogen only only chlorine as halogen atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08L61/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08L61/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
    • C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
    • 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
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08J2361/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08J2361/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
    • 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
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • C08J2475/08—Polyurethanes from polyethers

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  • Chemical & Material Sciences (AREA)
  • 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 present invention proposes a kind of preparation method of closed pore agent, including step：1) phthalic anhydride is added into toluene di-isocyanate(TDI), stirring reaction under normal temperature；The volume mass of toluene di-isocyanate(TDI) and phthalic anhydride ratio is 100mL：4~8g；2) polyethylene glycol 200 is added into reaction system, reaction temperature is 65~75 DEG C, and 65~75 DEG C of keeping temperature continues reaction and obtains closed pore agent in 30~40 minutes after polyethylene glycol adds.In the method for the present invention, phthalic anhydride and auxiliary agent are added when preparing closed pore agent, solves the problem of open of melamine foams with the polyurethane of activity.Obtained closed pore agent can not only effectively reduce melamine sponge percent opening, and improve the toughness of sponge, product quality is improved, using expansion.

Description

A kind of preparation method and products therefrom of closed pore agent
Technical field
The invention belongs to field of porous materials, and in particular to a kind of closed pore agent prepared used in foamed resin.
Background technology
The melamine sponge that market occurred in recent years is also known as melamine sponge, is entered by alkaline melamine resin The flexible thermosetting foamed plastics of nanoscale three-dimensional cross-linked network made of the foaming of special process microwave.Melamine sponge belongs to Complete open-celled foam, its percent opening are up to 99.9% fire resistance height, and smoke density is low, be preferable insulation, heat-insulated, sound insulation, Light material.In the fields such as building decoration, vehicular traffic, water craft, Aero-Space, electromechanical equipment, industrial acoustical absorption heat preserving Widely used (Wang Dongwei etc., the preparation modification of melamine foams and performance study, functional material, 24 phases in 2012).
Melamine sponge is a new industry in China, and its market demand is huge.According to opening-type on sponge, it is divided into (eyelet and eyelet be not completely separated by hole wall between each other, has certain for closed pore (not connected between eyelet and eyelet), perforate Degree together with property) and three kinds of mix aperture (having two kinds of structures of perforate and closed pore concurrently).The open-celled structure water suction of melamine sponge foam Rate is high to reach 350%, and the foam wt increase after water suction, heat preserving heat insulating noise insulation performance drastically declines, it is easier in cavity Middle breed bacteria, which produces, goes mouldy, open-celled structure air produce convective heat transfer heat-insulating property it is limited applied in terms of insulation by Limitation.
Also not specifically for the closed pore agent of melamine sponge on Vehicles Collected from Market.
The content of the invention
For weak point existing for this area, the purpose of the present invention is to propose to a kind of preparation method of closed pore agent.
It is another object of the present invention to propose closed pore agent made from the preparation method.
Third object of the present invention is to propose the application of the closed pore agent
To realize that the technical scheme of above-mentioned purpose of the present invention is：
A kind of preparation method of closed pore agent, including step：
1) to Toluene-2,4-diisocyanate, phthalic anhydride is added in 4- diisocyanate, stirring reaction under normal temperature；The diisocyanate of toluene 2,4 and The volume mass ratio of phthalic anhydride is 100mL：4~8g；
2) polyethylene glycol 200 is added into reaction system, reaction temperature is 65~75 DEG C, and polyethylene glycol keeps temperature after adding 65~75 DEG C of degree continues reaction and obtains closed pore agent in 30~40 minutes.
Wherein, the toluene di-isocyanate(TDI) is Toluene-2,4-diisocyanate, 4- diisocyanate and/or Toluene-2,4-diisocyanate, 6- diisocyanate. Generally toluene di-isocyanate(TDI) purchased in market is Toluene-2,4-diisocyanate, 4- diisocyanate and Toluene-2,4-diisocyanate, the mixing of 6- diisocyanate Thing.But inventor in experiments it is found that, the Toluene-2,4-diisocyanate of high content, 6- diisocyanate add after react dramatic strong, can not control Reaction process processed, with best containing 80% Toluene-2,4-diisocyanate, 4- diisocyanate effects.
Wherein, the step 1) is additionally added toughener A-60 (Shenzhen gold complete works of Science and Technology Ltd. production), toughener and Toluene-2,4-diisocyanate, the volume ratio of 4- diisocyanate is 10~20：100.
Wherein, in the step 2), polyethylene glycol and Toluene-2,4-diisocyanate, the volume ratio of 4- diisocyanate is 40~60：100.
Wherein, in the step 2), with the speed control reaction temperature of dropwise addition polyethylene glycol at 68~72 DEG C.
The closed pore agent that preparation method of the present invention is prepared.
Application of the closed pore agent in melamine foams are prepared.
The method for preparing melamine foams using the closed pore agent, including step：According to mass parts, taking can hair style melamine resin 100 parts of (city is available), add 30~40 parts of closed pore agent, 4~6 parts of closed pore adjuvant, 1~3 part of surfactant, curing agent 2 ~3 parts, 1~2 part of foaming agent is uniform through high-speed stirred, is placed in microwave in mould and foams.
Wherein, the curing agent is in oxalic acid, formic acid, phosphoric acid, p-methyl benzenesulfonic acid, catalyst for trimerization, ammonium chloride, magnesium sulfate One or more, the surfactant be dodecyl sodium sulfate, silicone oil, stearic acid, amino acid, poly- sorbic alcohol, fat One or more in acid glyceride, the foaming agent is pentane, butane, ethane, heptane, dichloroethanes, Arcton 11, two One or more in dichlorodifluoromethane.
Preferably, the closed pore adjuvant is silicone emulsion, benzoic anhydride polyester polyol, isocyanate than 1：1：0.3 Mixture.
The beneficial effects of the present invention are：
The present invention be directed to existing melamine sponge foam perforate or part open, the problem of causing material fragility big, proposes newly The preparation method of the closed pore agent of type.
Phthalic anhydride and auxiliary agent are added when preparing closed pore agent, solves the problem of open of melamine foams with the polyurethane of activity.It is made Closed pore agent can not only effectively reduce melamine sponge percent opening, and improve the toughness of sponge, improve product quality, application Expand.
Embodiment
Following examples are used to illustrate the present invention, but should not be taken to limit the scope of the present invention.
The equipment component used in embodiment is：Three mouthfuls of reactors, purchased from Jining Heng Tai Chemical Co., Ltd.s；Automatic stirring Temperature controller, purchased from Jining Heng Tai Chemical Co., Ltd.s；Microwave test machine, purchased from Guangzhou Fu Tao microwave equipments Co., Ltd；Perforate Rate rate of closed hole measuring instrument, purchased from scientific and technological (Beijing) Co., Ltd of Bei Shide instruments.Toluene in used toluene di-isocyanate(TDI)- 2,4- diisocyanate contents are 80%, and Toluene-2,4-diisocyanate, 4- diisocyanate are designated as in embodiment.
In embodiment, unless otherwise instructed, means used are this area conventional technical means.
Embodiment 1：
Toluene-2,4-diisocyanate is added in beaker, 4- diisocyanate 100ml, adds 5 grams of phthalic anhydride, A-60 (the complete works of science and technology of Shenzhen gold Co., Ltd produces) after 30 minutes, course of reaction is kept stirring for 15ml normal-temperature reactions.
Polyethylene glycol (molecular weight 200) 50ml is added dropwise to, with the speed control temperature of dropwise addition at 70 DEG C or so, is protected after dripping off Hold temperature 70 C and continue reaction and obtain closed pore agent in 30 minutes.
Embodiment 2
Take can 100 grams of hair style melamine resin (being purchased from Central Plains great Hua companies of Henan derived energy chemical group), add embodiment 1 make 35 grams of closed pore agent, (silicone emulsion, benzoic anhydride polyester polyol, isocyanate are than 1 for closed pore adjuvant：1：0.3 mixture) 5 Gram, 2 grams of surfactant, 2.4 grams of curing agent ammonium chloride, 1.6 grams of foaming agent pentane, high-speed stirred is uniform.It is placed in micro- in mould Ripple foams.Obtain the closed pore melamine foams of softness.
The surfactant is：Dodecyl sodium sulfate, silicone oil, stearic acid, amino acid, poly- sorbic alcohol ester 20, fat One or more in acid glyceride.
Water absorption rate test：The foam for taking length, width and height to be 10cm, it is weighed as 12 grams.Being put into topped up with water in beaker does not have foam Enter in water, immersion is taken out after 48 hours, and 30 DEG C of temperature are dried in the shade 24 hours, are weighed as 12.1 grams, and water absorption rate is calculated and is 0.83%.
Rate of closed hole is tested：Percent opening rate of closed hole measuring instrument test result is 98.1%.
Embodiment 3：
Toluene-2,4-diisocyanate is added in beaker, 4- diisocyanate 100ml, adds 5 grams of phthalic anhydride, A-60 (the complete works of science and technology of Shenzhen gold Co., Ltd produces) 15ml, normal-temperature reaction, after 40 minutes, it is kept stirring in course of reaction.
Polyethylene glycol (molecular weight 200) 40ml is added dropwise to, with the speed control temperature of dropwise addition at 72 DEG C, temperature is kept after dripping off 72 DEG C of degree continues reaction and obtains closed pore agent in 30 minutes.
Embodiment 4
Take can 100 grams of hair style melamine resin (being purchased from Central Plains great Hua companies of Henan derived energy chemical group), add embodiment 3 make 30 grams of closed pore agent, (silicone emulsion, benzoic anhydride polyester polyol, isocyanate are than 1 for closed pore adjuvant：1：0.3 mixture) 5 Gram, 2 grams of surfactant (dodecyl sodium sulfate), 2.2 grams of curing agent ammonium chloride, 1.5 grams of foaming agent dichloroethanes, high-speed stirring Mix uniformly.Microwave in mould is placed in foam.Obtain the closed pore melamine foams of softness.
Water absorption rate test：The foam for taking length, width and height to be 10cm, it is weighed as 12.8 grams.Being put into topped up with water in beaker makes foam Submerge in water, immersion is taken out after 48 hours, and 30 DEG C of temperature are dried in the shade 24 hours, are weighed as 12.95 grams, and water absorption rate is calculated and is 1.1%.
Rate of closed hole is tested：It is 98.0% with percent opening rate of closed hole measuring instrument test result.
Although above the present invention has made detailed description, on the basis of the present invention, some can be made to it and repaiied Change or improve, this will be apparent to those skilled in the art.Therefore, institute without departing from theon the basis of the spirit of the present invention The these modifications or improvements done, belong to the scope of protection of present invention.

Claims (8)

1. a kind of preparation method of closed pore agent, it is characterised in that including step：
1) phthalic anhydride is added into toluene di-isocyanate(TDI), stirring reaction under normal temperature；The volume matter of toluene di-isocyanate(TDI) and phthalic anhydride It is 100mL to measure ratio：4~8g；The toluene di-isocyanate(TDI) is Toluene-2,4-diisocyanate, 4- diisocyanate and/or Toluene-2,4-diisocyanate, the isocyanides of 6- bis- Acid esters；
2) polyethylene glycol 200 is added into reaction system, reaction temperature is 65~75 DEG C, keeping temperature 65 after polyethylene glycol adds ~75 DEG C are continued reaction and obtain closed pore agent in 30~40 minutes；Wherein, the volume ratio of polyethylene glycol and toluene di-isocyanate(TDI) is 40 ~60：100.
2. preparation method according to claim 1, it is characterised in that Toluene-2,4-diisocyanate in the toluene di-isocyanate(TDI), 4- bis- Isocyanate content is 80%.
3. preparation method according to claim 1, it is characterised in that the step 1), which is additionally added Shenzhen complete works of science and technology of gold, to be had The volume ratio of the toughener A-60 of limit company production, toughener and toluene di-isocyanate(TDI) is 10~20：100.
4. according to any described preparation method of claims 1 to 3, it is characterised in that in the step 2), with the poly- second two of dropwise addition The speed control reaction temperature of alcohol is at 68~72 DEG C.
5. the closed pore agent that any described preparation method of Claims 1 to 4 is prepared.
6. application of the closed pore agent in melamine foams are prepared described in claim 5.
7. the method that closed pore agent described in application claim 5 prepares melamine foams, it is characterised in that including step：According to quality Part, take can 100 parts of hair style melamine resin, add 30~40 parts of closed pore agent, 4~6 parts of closed pore adjuvant, surfactant 1~3 Part, 2~3 parts of curing agent, 1~2 part of foaming agent is uniform through high-speed stirred, is placed in microwave in mould and foams；Wherein, the closed pore Adjuvant is silicone emulsion, benzoic anhydride polyester polyol, isocyanate than 1：1:0.3 mixture.
8. according to the method for claim 7, it is characterised in that the curing agent be oxalic acid, formic acid, phosphoric acid, to toluene sulphur One or more in acid, ammonium chloride, magnesium sulfate, the surfactant are dodecyl sodium sulfate, silicone oil, stearic acid, ammonia One or more in base acid, polysorbate20, fatty glyceride, the foaming agent is pentane, butane, ethane, heptane, One or more in dichloroethanes, Arcton 11, dicholorodifluoromethane.
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CN105923027A (en) * 2016-05-31 2016-09-07 国家电网公司 Safety measure appliance vehicle

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Publication number Priority date Publication date Assignee Title
GB1443024A (en) * 1973-10-22 1976-07-21 Melamina Ultra Sa Ind Quimica Melamine resin foam compositions
CN102898778A (en) * 2012-09-07 2013-01-30 南通紫鑫实业有限公司 Preparation method for melamine formaldehyde resin closed-cell foam
CN103012707A (en) * 2012-10-11 2013-04-03 乌鲁木齐益好天成新型节能材料有限公司 Method for anhydride modified melamine resin
CN104250386A (en) * 2014-09-25 2014-12-31 四川金象赛瑞化工股份有限公司 Preparation method of flame-retardant melamine hard foam
CN104927301A (en) * 2015-06-30 2015-09-23 四川构聚高分子材料有限公司 Polyisocyanate oligomer modified melamine-formaldehyde foam and preparation method therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1443024A (en) * 1973-10-22 1976-07-21 Melamina Ultra Sa Ind Quimica Melamine resin foam compositions
CN102898778A (en) * 2012-09-07 2013-01-30 南通紫鑫实业有限公司 Preparation method for melamine formaldehyde resin closed-cell foam
CN103012707A (en) * 2012-10-11 2013-04-03 乌鲁木齐益好天成新型节能材料有限公司 Method for anhydride modified melamine resin
CN104250386A (en) * 2014-09-25 2014-12-31 四川金象赛瑞化工股份有限公司 Preparation method of flame-retardant melamine hard foam
CN104927301A (en) * 2015-06-30 2015-09-23 四川构聚高分子材料有限公司 Polyisocyanate oligomer modified melamine-formaldehyde foam and preparation method therefor

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