CN109251292A - Latent Curing Agents in Polyurethane and single-component polyurethane water-proof paint and preparation method - Google Patents

Latent Curing Agents in Polyurethane and single-component polyurethane water-proof paint and preparation method Download PDF

Info

Publication number
CN109251292A
CN109251292A CN201810771535.7A CN201810771535A CN109251292A CN 109251292 A CN109251292 A CN 109251292A CN 201810771535 A CN201810771535 A CN 201810771535A CN 109251292 A CN109251292 A CN 109251292A
Authority
CN
China
Prior art keywords
polyurethane
latent curing
curing agents
water
aldehyde
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810771535.7A
Other languages
Chinese (zh)
Other versions
CN109251292B (en
Inventor
吴海洋
龚兴宇
陈立义
林焕章
陈业煌
胡全超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Ke Shun Chemical New Material Co Ltd
Original Assignee
Chongqing Ke Shun Chemical New Material Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Ke Shun Chemical New Material Co Ltd filed Critical Chongqing Ke Shun Chemical New Material Co Ltd
Priority to CN201810771535.7A priority Critical patent/CN109251292B/en
Publication of CN109251292A publication Critical patent/CN109251292A/en
Application granted granted Critical
Publication of CN109251292B publication Critical patent/CN109251292B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/32Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3225Polyamines
    • C08G18/3253Polyamines being in latent form
    • C08G18/3256Reaction products of polyamines with aldehydes or ketones
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C251/00Compounds containing nitrogen atoms doubly-bound to a carbon skeleton
    • C07C251/02Compounds containing nitrogen atoms doubly-bound to a carbon skeleton containing imino groups
    • C07C251/04Compounds containing nitrogen atoms doubly-bound to a carbon skeleton containing imino groups having carbon atoms of imino groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C251/06Compounds containing nitrogen atoms doubly-bound to a carbon skeleton containing imino groups having carbon atoms of imino groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of a saturated carbon skeleton
    • C07C251/08Compounds containing nitrogen atoms doubly-bound to a carbon skeleton containing imino groups having carbon atoms of imino groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of a saturated carbon skeleton being acyclic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/02Polyureas
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • C09D175/08Polyurethanes from polyethers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The invention discloses a kind of Latent Curing Agents in Polyurethane, structural formula R1—CH══N—R2—N══CH—R3, wherein R1、R2、R3Molecular weight for alkyl or aryl or alkaryl, the latent curing agent is not higher than 300.The invention also discloses the single-component polyurethane water-proof paints and preparation method thereof using above-mentioned latent curing agent.The present invention provides a kind of Latent Curing Agents in Polyurethane, and stability is good, and using single-component polyurethane water-proof paint more shelf-stable made from it, the shelf-life is longer;The Latent Curing Agents in Polyurethane of unit mass can provide more-NH2 groups, and dosage is small, and application cost is low.Polyurethane water-proof paint disclosed by the invention is small to human injury, environmentally friendly, has excellent storage stability, obtained coating performance is excellent simultaneously, with excellent tensile strength and tearing strength, existing production technology can be directlyed adopt and production equipment preparation, production cost are low.

Description

Latent Curing Agents in Polyurethane and single-component polyurethane water-proof paint and preparation method
Technical field
The present invention relates to building water-proof paint fields, more particularly to a kind of Latent Curing Agents in Polyurethane and monocomponent polyurethane Water-repellent paint and preparation method thereof.
Background technique
Polyurethane water-proof paint belongs to chemical reaction type water-repellent paint, is a kind of high elastic coating of rubber-like after solidification, Film integral seamless is referred to as " liquid coiled material " by industry, is worldwide widely applied because of its excellent comprehensive performance. China's polyurethane water-proof paint have passed through development in more than 20 years, and product category is abundant, has excellent performance, occupies in building waterproofing industry Consequence.
Traditional double-composition polyurethane waterproof paint construction requirement is stringent, more demanding to the technical level of worker, and applies Work trouble;And the polyurethane water-proof paint of one-component, it does not need the mixing of two components, behind Kaifeng, can directly be coated with use, greatly Reduce difficulty of construction.For now, single-component polyurethane water-proof paint mainly wetly curing type and latent curing type two Kind, moisture-curable high-performance single-component polyurethane water-proof paint is during dried coating film, since-NCO group is to moisture height The defects of degree is sensitive, and shrinkage cavity, pin hole, dark bubble are generated easily in film, and latent curing type high-performance monocomponent polyurethane waterproof applies Expect that usually used latent curing agent then often haves the shortcomings that dosage is larger, application cost is high, coating finished product storge quality is poor.
Summary of the invention
To overcome existing technological deficiency, the present invention provides one kind stable for a long time in the environment of hermetically drying to deposit Dosage is small, and the Latent Curing Agents in Polyurethane that application cost is low.
The present invention also provides the single-component polyurethane water-proof paint and preparation method using above-mentioned latent curing agent, which is applied Material has outstanding storage stability, and nontoxic and pollution-free, and coating performance is excellent.
To achieve the purpose of the present invention, it is achieved using following technical scheme:
A kind of Latent Curing Agents in Polyurethane, structural formula R1—CH══N—R2—N══CH—R3, wherein R1、R2、R3 Molecular weight for alkyl or aryl or alkaryl, the latent curing agent is not higher than 300.
The prior art mainly adopts macromolecular latent curing agent, molecular weight at least 500, however work as latent curing agent molecular weight When excessive, lead to that relatively large latent curing agent dosage must be used, this may make the application of latent curing agent to become costly, to answer With at high cost.Provided by the present invention is a kind of aldimine type polyurethane latent curing agent of small molecule, the polyurethane of unit mass Latent curing agent can provide more-NH2Group, dosage is small, and application cost is low, hydrolyzes-the NH generated2Group and-NCO form urea Key group improves the physicochemical property of high-performance single-component polyurethane water-proof paint.Relative to other latent curing agents, institute of the present invention The Latent Curing Agents in Polyurethane of offer has higher chemical stability, more using single-component polyurethane water-proof paint made from it Shelf-stable, shelf-life are longer.
As one such embodiment, R1And R3For the alkyl with 1~4 carbon atom, R2For alkyl or aryl or Alkaryl.
As one such embodiment, it is made using diamine and alkyl aldehyde reaction.Present invention preferably employs low Molecular weight and molecular structure is regular, symmetrical diamine and aldehyde, reactivity is very high, therefore synthetic reaction can reach very high anti- Degree is answered, the water generated in product need to be only separated in time during synthetic reaction carries out, so that synthetic reaction forward direction carries out More thoroughly.
As one such embodiment, the Latent Curing Agents in Polyurethane is prepared according to following methods:
S1: putting into 1,6- hexamethylene diamine and water to reaction kettle under nitrogen protection, instills n-butanal to reaction kettle under stiring Or propionic aldehyde;
S2: after complete reaction, water and volatile component are removed under negative pressure, obtains polyurethane curing agent.
As one such embodiment, the Latent Curing Agents in Polyurethane is prepared according to following methods:
S1: putting into n-butanal or propionic aldehyde and toluene to reaction kettle under nitrogen protection, adds under stiring into reaction kettle Enter phenylenediamine, back flow reaction 3 hours;
S2: water and volatile component are removed under negative pressure, obtains polyurethane curing agent.
Latent Curing Agents in Polyurethane preparation process provided by the present invention is simple, and reaction condition requirement is low, typically directly in room Under the conditions of temperature, preparation process is simple, and the reaction time is short, and preparation cost is cheap.The present invention is due to using low molecular weight And molecular structure is regular, symmetrical diamine and aldehyde, reactivity is very high, therefore the synthetic reaction has very high reaction interval Degree, and synthetic reaction carries out separating the water generated in product in time in the process, so that the progress of synthetic reaction forward direction is thorough, not It can participate in reacting and remaining-NH2Group is few, therefore Latent Curing Agents in Polyurethane obtained by the present invention can be straight without purification It connects and is added in polyurethane water-proof paint, will not react with-NCO group in coating system is added and influence finished product viscosity.
Preferably, the molar ratio of amine and aldehyde are as follows: amine: aldehyde=1: (2.1~2.6).It is further preferred that mole of amine and aldehyde Than are as follows: amine: aldehyde=1: (2.2~2.4).
A kind of single-component polyurethane water-proof paint using above-mentioned Latent Curing Agents in Polyurethane, by percentage to the quality, by Following component is prepared: diisocyanate 2%~6.7%, polymer polyatomic alcohol 25%~50%, powder stuffing 30%~ 50%, liquid filler 10%~20%, Latent Curing Agents in Polyurethane 1%~2.5%, catalyst 0.01%~0.5%, diluent 1%~14%.
Preferably, above-mentioned single-component polyurethane water-proof paint is prepared: two by percentage to the quality by following component Isocyanates 4%~6%, polymer polyatomic alcohol 25%~35%, powder stuffing 35%~42%, liquid filler 12%~ 15%, Latent Curing Agents in Polyurethane 1.8%~2.5%, catalyst 0.1%~0.4%, diluent 9%~13%.
As one such embodiment, the diisocyanate be liquefaction methyl diphenylene diisocyanate (MDI), Poly methylene poly phenyl poly isocyanate (PAPI), dicyclohexyl methyl hydride diisocyanate (HMDI), isophorone diisocyanate At least one of ester (IPDI);The polymer polyatomic alcohol is polyoxypropyleneglycol (PPG), polypropylene oxide triol (PPT), polytetrahydrofuran ether glycol (PTMG), poly (propylene carbonate) glycol (PPC), in polycarbonate glycol (PCD) at least It is a kind of;The powder stuffing is at least one of talcum powder, powdered whiting, precipitated calcium carbonate, kaolin;The liquid is filled out Material is at least one of chlorinated paraffin (CP), diisononyl phthalate, liquid petroleum resin;The catalyst is February At least one of dilaurylate, stannous octoate, triethylamine, isooctyl acid bismuth.
The present invention provides a kind of latent curing type single-component polyurethane water-proof paint without containing free TDI, nontoxic no dirt Dye, it is environmentally friendly to the health hazards very little of operator in production and work progress.The present invention takes addition a large amount of poly- Object polyxol method is closed, the dosage of diisocyanate is greatly reduced, further mitigates the harm to contact personnel and environment.Together When the present invention using self-control Latent Curing Agents in Polyurethane, there is excellent storage stability, while obtained coating performance is excellent, With excellent tensile strength and tearing strength.
A kind of preparation method of above-mentioned single-component polyurethane water-proof paint, the specific steps are as follows:
S I: high speed dispersion will be carried out in polymer polyatomic alcohol described in formula, powder stuffing, liquid filler investment Scattered Kettle It 0.5 hour, is then transferred to heat temperature raising in reaction kettle and starts to vacuumize, the continuous dehydration 3 hours at 110 ± 5 DEG C of temperature;
S II: after dehydration, cooling to 80 ± 5 DEG C, is added diisocyanate, and it is small that heat preservation at 80 ± 5 DEG C is stirred to react 3 When;
S III: being cooled to 75 ± 5 DEG C, and catalyst is added, and heat preservation is reacted 0.5 hour at 75 ± 5 DEG C;
S IV: heat preservation is at 75 ± 5 DEG C, addition Latent Curing Agents in Polyurethane, and insulated and stirred 0.5 hour;
S V: diluent is added, is cooled to 60 ± 5 DEG C, deaeration 10 minutes, then filter getting the product under vacuum.
Compared with the prior art, the invention has the following advantages:
(1) the present invention provides a kind of Latent Curing Agents in Polyurethane, and stability is good, anti-using monocomponent polyurethane made from it Water paint more shelf-stable, shelf-life are longer.
(2) Latent Curing Agents in Polyurethane of latent curing agent unit mass provided by the present invention can provide more-NH2Group, Dosage is small, and application cost is low.
(3) latent curing agent preparation process provided by the present invention is simple, and reaction condition requirement is low, and preparation cost is low, and anti- It answers degree high, is suitble to produce in enormous quantities, and product obtained can be added directly in polyurethane water-proof paint without purification, no It can react when being added in coating system with isocyanate groups and influence finished product viscosity.
(4) the present invention also provides using above-mentioned latent curing agent single-component polyurethane water-proof paint and preparation method thereof, The polyurethane water-proof paint is small to human injury, environmentally friendly, and has excellent storage stability, while obtained painting Layer is had excellent performance, and has excellent tensile strength and tearing strength.In addition, its preparation process and plain edition monocomponent polyurethane are anti- Water paint preparation process indifference, can directly adopt existing production technology and production equipment, and production cost is low, is very suitable to work Industryization is produced in enormous quantities.
(5) single-component polyurethane water-proof paint provided by the present invention is contained using cured mode of diving, control-NCO group Amount in the reasonable scope, forms the structure of polyurethanyl group and the mutual block of polyureas group, and obtained properties of coating is more preferable.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention is made below further It explains in detail.
Embodiment 1
By percentage to the quality, the raw material of the high-performance single-component polyurethane water-proof paint in the present embodiment includes following component:
Wherein, catalyst is the triethylamine and dibutyl tin dilaurate mixture of mass ratio 2:8;Polypropylene oxide triol The molecular weight of 330N is 4800, and the molecular weight of polyoxypropyleneglycol 2000D is 2000.
Make by oneself latent curing agent A's the preparation method comprises the following steps: under nitrogen protection in a round bottom flask investment 116.20g1,6- oneself two 160.00g n-butanal is added from dropping funel under fast stirring in amine and 50g water, then removes water under negative pressure and other waves Hair property ingredient (- 0.1MPa), obtains product latent curing agent A.
The preparation method of above-mentioned single-component polyurethane water-proof paint, steps are as follows:
It (1) will be according to polypropylene oxide triol 330N, the polyoxypropyleneglycol 2000D, PTMG2000, cunning of formulation ratio Mountain flour, powdered whiting, diisononyl phthalate put into Scattered Kettle and carry out high speed dispersion 0.5 hour, are then transferred to Heat temperature raising and starting to vacuumize, the continuous dehydration 3 hours at 110 ± 5 DEG C of temperature in reaction kettle, vacuum degree need to be less than- 0.09MPa;
(2) after being dehydrated, 80 ± 5 DEG C are cooled to, liquefied mdi is added, heat preservation is stirred to react 3 hours at 80 ± 5 DEG C;
(3) 75 ± 5 DEG C are cooled to, catalyst is added, heat preservation is reacted 0.5 hour at 75 ± 5 DEG C;
(4) heat preservation is added at 75 ± 5 DEG C and makes latent curing agent A by oneself, and insulated and stirred 0.5 hour;
(5) diluent is added, is cooled to 60 ± 5 DEG C, in vacuum degree -0.08MPa~-0.1MPa deaeration 10 minutes, then It is packed with 100 mesh double-layer leaching nets filtering blowing.
Embodiment 2
By percentage to the quality, the raw material of the high-performance single-component polyurethane water-proof paint in the present embodiment includes such as the following group Point:
Wherein, the catalyst is the triethylamine and stannous octoate mixture of mass ratio 2:8.
Make by oneself latent curing agent B's the preparation method comprises the following steps: under nitrogen protection in a round bottom flask investment 116.20g 1,6- oneself 130.00g propionic aldehyde is added from dropping funel under fast stirring in diamines and 50g water, then removes water under negative pressure and other waves Hair property ingredient (- 0.1MPa), obtains product latent curing agent B.
The preparation method of high-performance single-component polyurethane water-proof paint, steps are as follows:
(1) by by polypropylene oxide triol 330N, PTMG2000 of formulation ratio, talcum powder, precipitated calcium carbonate, CP52, It is carried out high speed dispersion 0.5 hour in liquid petroleum resin investment Scattered Kettle, is then transferred to heat temperature raising in reaction kettle and starts It vacuumizes, the continuous dehydration 3 hours at 110 ± 5 DEG C of temperature, vacuum degree need to be less than -0.09MPa;
(2) after being dehydrated, 80 ± 5 DEG C are cooled to, liquefied mdi and HMDI is added, heat preservation is stirred to react 3 at 80 ± 5 DEG C Hour;
(3) 75 ± 5 DEG C are cooled to, catalyst is added, heat preservation is reacted 0.5 hour at 75 ± 5 DEG C;
(4) heat preservation is added at 75 ± 5 DEG C and makes latent curing agent B by oneself, and insulated and stirred 0.5 hour;
(5) diluent is added, is cooled to 60 ± 5 DEG C, in vacuum degree -0.08MPa~-0.1MPa deaeration 10 minutes, then It is packed with 100 mesh double-layer leaching nets filtering blowing.
Embodiment 3
By percentage to the quality, the raw material of the high-performance single-component polyurethane water-proof paint in the present embodiment includes such as the following group Point:
Wherein, the catalyst is the isooctyl acid bismuth and stannous octoate mixture of mass ratio 4:6.
Wherein, self-control latent curing agent C's the preparation method comprises the following steps: under nitrogen protection in a round bottom flask investment 160.00g just Butyraldehyde and 40g toluene are added 108.14g phenylenediamine, back flow reaction 3 hours, then remove water under negative pressure under fast stirring And other volatile components (- 0.1MPa), obtain product.
The preparation method of high-performance single-component polyurethane water-proof paint, steps are as follows:
It (1) will be by polypropylene oxide triol 330N, PCD2000 of formulation ratio, kaolin, powdered whiting, adjacent benzene two It is carried out high speed dispersion 0.5 hour in formic acid dinonyl, CP52 investment Scattered Kettle, is then transferred in reaction kettle heat temperature raising simultaneously Start to vacuumize, the continuous dehydration 3 hours at 110 ± 5 DEG C of temperature, vacuum degree need to be less than -0.09MPa;
(2) 80 ± 5 DEG C are cooled to after being dehydrated, is added PAPI and HMDI, it is small that heat preservation at 80 ± 5 DEG C is stirred to react 3 When;
(3) 75 ± 5 DEG C are cooled to, catalyst is added, heat preservation is reacted 0.5 hour at 75 ± 5 DEG C;
(4) heat preservation is added at 75 ± 5 DEG C and makes latent curing agent C by oneself, and insulated and stirred 0.5 hour;
(5) diluent is added, is cooled to 60 ± 5 DEG C, in vacuum degree -0.08MPa~-0.1MPa deaeration 10 minutes, then It is packed with 100 mesh double-layer leaching nets filtering blowing.
Embodiment 4
By percentage to the quality, the raw material of the high-performance single-component polyurethane water-proof paint in the present embodiment includes such as the following group Point:
Wherein, catalyst is isooctyl acid bismuth.
Make by oneself latent curing agent D's the preparation method comprises the following steps: under nitrogen protection in a round bottom flask investment 130.00g propionic aldehyde and 40g toluene is added 108.14g phenylenediamine, back flow reaction 3 hours, then removes water and other under negative pressure under fast stirring Volatile component (- 0.1MPa) obtains product self-control latent curing agent D.
The preparation method of above-mentioned high-performance single-component polyurethane water-proof paint, steps are as follows:
(1) polypropylene oxide triol 330N, PPC2000, kaolin, the talcum powder, phthalic acid of formulation ratio will be pressed It is carried out high speed dispersion 0.5 hour in dinonyl, liquid petroleum resin investment Scattered Kettle, is then transferred in reaction kettle and heats liter Temperature simultaneously starts to vacuumize, and the continuous dehydration 3 hours at 110 ± 5 DEG C of temperature, vacuum degree need to be less than -0.09MPa;
(2) after being dehydrated, 80 ± 5 DEG C are cooled to, liquefied mdi and IPDI is added, heat preservation is stirred to react 3 at 80 ± 5 DEG C Hour;
(3) 75 ± 5 DEG C are cooled to, catalyst is added, heat preservation is reacted 0.5 hour at 75 ± 5 DEG C;
(4) heat preservation is added at 75 ± 5 DEG C and makes latent curing agent D by oneself, and insulated and stirred 0.5 hour;
(5) diluent is added, is cooled to 60 ± 5 DEG C, in vacuum degree -0.08MPa~-0.1MPa deaeration 10 minutes, then It is packed with 100 mesh double-layer leaching nets filtering blowing.
Embodiment 5
By percentage to the quality, the raw material of the high-performance single-component polyurethane water-proof paint in the present embodiment includes following component:
Wherein, catalyst is the triethylamine and dibutyl tin dilaurate mixture of mass ratio 1:9.
Make by oneself latent curing agent D's the preparation method comprises the following steps: under nitrogen protection in a round bottom flask investment 130.00g propionic aldehyde and 40g toluene is added 108.14g phenylenediamine, back flow reaction 3 hours, then removes water and other under negative pressure under fast stirring Volatile component (- 0.1MPa) obtains product self-control latent curing agent D.
The preparation method of above-mentioned high-performance single-component polyurethane water-proof paint, steps are as follows:
It (1) will be by polyoxypropyleneglycol 2000D, PPC-2000 of formulation ratio, PCD-2000, talcum powder, adjacent benzene two It is carried out high speed dispersion 0.5 hour in formic acid dinonyl investment Scattered Kettle, is then transferred to heat temperature raising in reaction kettle and starts It vacuumizes, the continuous dehydration 3 hours at 110 ± 5 DEG C of temperature, vacuum degree need to be less than -0.09MPa;
(2) after being dehydrated, 80 ± 5 DEG C are cooled to, IPDI is added, heat preservation is stirred to react 3 hours at 80 ± 5 DEG C;
(3) 75 ± 5 DEG C are cooled to, catalyst is added, heat preservation is reacted 0.5 hour at 75 ± 5 DEG C;
(4) heat preservation is added at 75 ± 5 DEG C and makes latent curing agent D by oneself, and insulated and stirred 0.5 hour;
(5) diluent is added, is cooled to 60 ± 5 DEG C, in vacuum degree -0.08MPa~-0.1MPa deaeration 10 minutes, then It is packed with 100 mesh double-layer leaching nets filtering blowing.
Embodiment 6
By percentage to the quality, the raw material of the high-performance single-component polyurethane water-proof paint in the present embodiment includes such as the following group Point:
Wherein, catalyst is the triethylamine and stannous octoate mixture of mass ratio 3:7.
Make by oneself latent curing agent B's the preparation method comprises the following steps: under nitrogen protection in a round bottom flask investment 116.20g 1,6- oneself 130.00g propionic aldehyde is added from dropping funel under fast stirring in diamines and 50g water, then removes water under negative pressure and other waves Hair property ingredient (- 0.1MPa), obtains product latent curing agent B.The preparation method of above-mentioned high-performance single-component polyurethane water-proof paint, step It is rapid as follows:
(1) PTMG-1000, powdered whiting, kaolin, diisononyl phthalate, the liquid of formulation ratio will be pressed It is carried out high speed dispersion 0.5 hour in Petropols investment Scattered Kettle, be then transferred to heat temperature raising in reaction kettle and start to take out true Sky, the continuous dehydration 3 hours at 110 ± 5 DEG C of temperature, vacuum degree need to be less than
-0.09MPa;
(2) 80 ± 5 DEG C are cooled to after being dehydrated, is added HMDI and IPDI, it is small that heat preservation at 80 ± 5 DEG C is stirred to react 3 When;
(3) 75 ± 5 DEG C are cooled to, catalyst is added, heat preservation is reacted 0.5 hour at 75 ± 5 DEG C;
(4) heat preservation is added at 75 ± 5 DEG C and makes latent curing agent D by oneself, and insulated and stirred 0.5 hour;
(5) diluent is added, is cooled to 60 ± 5 DEG C, in vacuum degree -0.08MPa~-0.1MPa deaeration 10 minutes, then It is packed with 100 mesh double-layer leaching nets filtering blowing.
Performance test
Single-component polyurethane water-proof paint provided by Examples 1 to 6 is tested for the property, specific test method reference GB/T16777-2008, specific test result are as shown in table 1.
Table 1
The above embodiment is merely an example for clearly illustrating the present invention, and is not to embodiment party of the invention The restriction of formula.For those of ordinary skill in the art, other differences can also be made on the basis of the above description The variation or variation of form.There is no necessity and possibility to exhaust all the enbodiments.It is all in spirit and original of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the scope of protection of the claims of the present invention within then.

Claims (10)

1. a kind of Latent Curing Agents in Polyurethane, which is characterized in that its structural formula is R1—CH══N—R2—N══CH— R3, R1、 R2、R3Molecular weight for alkyl or aryl or alkaryl, the latent curing agent is not higher than 300.
2. Latent Curing Agents in Polyurethane according to claim 1, which is characterized in that R1And R3For the alkane with 1 ~ 4 carbon atom Base, R2For alkyl or aryl or alkaryl.
3. Latent Curing Agents in Polyurethane according to claim 2, which is characterized in that use diamine and alkyl aldehyde reaction system ?.
4. Latent Curing Agents in Polyurethane according to claim 3, which is characterized in that be prepared according to following methods:
S1: putting into 1,6- hexamethylene diamine and water to reaction kettle under nitrogen protection, instills n-butanal or third to reaction kettle under stiring Aldehyde;
S2: after complete reaction, water and volatile component are removed under negative pressure, obtains polyurethane curing agent.
5. Latent Curing Agents in Polyurethane according to claim 3, which is characterized in that be prepared according to following methods:
S1: n-butanal or propionic aldehyde and toluene are put into reaction kettle under nitrogen protection, benzene is added into reaction kettle under stiring Diamines, back flow reaction 3 hours;
S2: water and volatile component are removed under negative pressure, obtains polyurethane curing agent.
6. according to the described in any item Latent Curing Agents in Polyurethane of claim 3 ~ 5, which is characterized in that the molar ratio of amine and aldehyde are as follows: Amine: aldehyde=1: (2.1 ~ 2.6).
7. Latent Curing Agents in Polyurethane according to claim 6, which is characterized in that the molar ratio of amine and aldehyde are as follows: amine: aldehyde=1: (2.2~2.4)。
8. a kind of monocomponent polyurethane waterproof using described in any item Latent Curing Agents in Polyurethane according to claim 1 ~ 7 applies Material, which is characterized in that by percentage to the quality, be prepared by following component: diisocyanate 2% ~ 6.7%, polymer polyol Alcohol 25% ~ 50%, powder stuffing 30% ~ 50%, liquid filler 10% ~ 20%, Latent Curing Agents in Polyurethane 1% ~ 2.5%, catalyst 0.01% ~ 0.5%, diluent 1% ~ 14%.
9. single-component polyurethane water-proof paint according to claim 8, which is characterized in that the diisocyanate is liquefaction Methyl diphenylene diisocyanate, poly methylene poly phenyl poly isocyanate, dicyclohexyl methyl hydride diisocyanate, isophorone At least one of diisocyanate;And/or the polymer polyatomic alcohol be polyoxypropyleneglycol, polypropylene oxide triol, At least one of polytetrahydrofuran diol, poly (propylene carbonate) glycol, polycarbonate glycol;And/or the powder stuffing is At least one of talcum powder, powdered whiting, precipitated calcium carbonate, kaolin;And/or the liquid filler be chlorinated paraffin, At least one of diisononyl phthalate, liquid petroleum resin;And/or the catalyst is di lauric dibutyl At least one of tin, stannous octoate, triethylamine, isooctyl acid bismuth.
10. the preparation method of single-component polyurethane water-proof paint according to claim 8 or claim 9, which is characterized in that specific step It is rapid as follows:
S I: will polymer polyatomic alcohol described in formula, powder stuffing, disperse 0.5 hour in liquid filler investment Scattered Kettle, so After be transferred to heat temperature raising in reaction kettle and start to vacuumize, the continuous dehydration 3 hours at 110 ± 5 DEG C of temperature;
S II: after dehydration, cooling to 80 ± 5 DEG C, and diisocyanate is added, and heat preservation is stirred to react 3 hours at 80 ± 5 DEG C;
S III: being cooled to 75 ± 5 DEG C, and catalyst is added, and heat preservation is reacted 0.5 hour at 75 ± 5 DEG C;
S IV: heat preservation is at 75 ± 5 DEG C, addition Latent Curing Agents in Polyurethane, and insulated and stirred 0.5 hour;
S V: diluent is added, is cooled to 60 ± 5 DEG C, deaeration 10 minutes, then filter getting the product under vacuum.
CN201810771535.7A 2018-07-13 2018-07-13 Polyurethane latent curing agent, single-component polyurethane waterproof coating and preparation method Active CN109251292B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810771535.7A CN109251292B (en) 2018-07-13 2018-07-13 Polyurethane latent curing agent, single-component polyurethane waterproof coating and preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810771535.7A CN109251292B (en) 2018-07-13 2018-07-13 Polyurethane latent curing agent, single-component polyurethane waterproof coating and preparation method

Publications (2)

Publication Number Publication Date
CN109251292A true CN109251292A (en) 2019-01-22
CN109251292B CN109251292B (en) 2021-05-18

Family

ID=65049038

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810771535.7A Active CN109251292B (en) 2018-07-13 2018-07-13 Polyurethane latent curing agent, single-component polyurethane waterproof coating and preparation method

Country Status (1)

Country Link
CN (1) CN109251292B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109929426A (en) * 2019-01-25 2019-06-25 北京东方雨虹防水技术股份有限公司 A kind of latent curing agent type mono-composition poyurethane water-proof paint
CN110591541A (en) * 2019-10-16 2019-12-20 远大洪雨(唐山)防水材料有限公司 Single-component polyurethane waterproof coating production line
CN111621223A (en) * 2020-06-22 2020-09-04 安徽三棵树涂料有限公司 High-solid-content environment-friendly polyurethane waterproof coating and preparation method thereof
CN111662630A (en) * 2020-06-22 2020-09-15 安徽三棵树涂料有限公司 Low-VOC polyurethane waterproof coating and preparation method thereof
CN114605604A (en) * 2022-01-27 2022-06-10 北京东方雨虹防水技术股份有限公司 Curing agent with ionic liquid structure and preparation method and application thereof

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0725976A (en) * 1993-07-09 1995-01-27 Mitsui Toatsu Chem Inc Method for curing isocyanate composition containing latent curing agent
JPH0748430A (en) * 1993-08-04 1995-02-21 Mitsui Toatsu Chem Inc Repairing technique by impregnation
JPH08325343A (en) * 1995-05-30 1996-12-10 Mitsui Toatsu Chem Inc Waterproofing work for concrete structure
CN101160283A (en) * 2005-03-28 2008-04-09 雅宝公司 Diimines and secondary diamines
CN101687775A (en) * 2007-07-16 2010-03-31 Sika技术股份公司 Aldimines and compositions comprising aldamine
CN102807812A (en) * 2012-09-07 2012-12-05 上海应用技术学院 Latent curing single-component polyurethane water-proof coating and preparation method thereof
CN103261146A (en) * 2010-12-17 2013-08-21 Sika技术股份公司 Polyamines having secondary aliphatic amino groups
CN106675373A (en) * 2016-12-26 2017-05-17 徐州卧牛山新型防水材料有限公司 Non-cured polyurethane waterproof paint and preparation method thereof
CN107043447A (en) * 2017-04-19 2017-08-15 江苏湘园化工有限公司 A kind of asymmetric latency polyurethane curing agent and preparation method thereof
CN107118179A (en) * 2017-05-05 2017-09-01 北京东方雨虹防水技术股份有限公司 A kind of new group with imine moiety and preparation method thereof and its application and single-component polyurethane water-proof paint

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0725976A (en) * 1993-07-09 1995-01-27 Mitsui Toatsu Chem Inc Method for curing isocyanate composition containing latent curing agent
JPH0748430A (en) * 1993-08-04 1995-02-21 Mitsui Toatsu Chem Inc Repairing technique by impregnation
JPH08325343A (en) * 1995-05-30 1996-12-10 Mitsui Toatsu Chem Inc Waterproofing work for concrete structure
CN101160283A (en) * 2005-03-28 2008-04-09 雅宝公司 Diimines and secondary diamines
CN101687775A (en) * 2007-07-16 2010-03-31 Sika技术股份公司 Aldimines and compositions comprising aldamine
CN103261146A (en) * 2010-12-17 2013-08-21 Sika技术股份公司 Polyamines having secondary aliphatic amino groups
CN102807812A (en) * 2012-09-07 2012-12-05 上海应用技术学院 Latent curing single-component polyurethane water-proof coating and preparation method thereof
CN106675373A (en) * 2016-12-26 2017-05-17 徐州卧牛山新型防水材料有限公司 Non-cured polyurethane waterproof paint and preparation method thereof
CN107043447A (en) * 2017-04-19 2017-08-15 江苏湘园化工有限公司 A kind of asymmetric latency polyurethane curing agent and preparation method thereof
CN107118179A (en) * 2017-05-05 2017-09-01 北京东方雨虹防水技术股份有限公司 A kind of new group with imine moiety and preparation method thereof and its application and single-component polyurethane water-proof paint

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SUBRATA DAS等: ""Environment-friendly and solvent-free synthesis ofsymmetrical bis-imines under microwave irradiation"", 《GREEN CHEMISTRY LETTERS AND REVIEWS》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109929426A (en) * 2019-01-25 2019-06-25 北京东方雨虹防水技术股份有限公司 A kind of latent curing agent type mono-composition poyurethane water-proof paint
CN109929426B (en) * 2019-01-25 2021-02-23 北京东方雨虹防水技术股份有限公司 Latent curing agent type single-component polyurethane waterproof coating
CN110591541A (en) * 2019-10-16 2019-12-20 远大洪雨(唐山)防水材料有限公司 Single-component polyurethane waterproof coating production line
CN111621223A (en) * 2020-06-22 2020-09-04 安徽三棵树涂料有限公司 High-solid-content environment-friendly polyurethane waterproof coating and preparation method thereof
CN111662630A (en) * 2020-06-22 2020-09-15 安徽三棵树涂料有限公司 Low-VOC polyurethane waterproof coating and preparation method thereof
CN114605604A (en) * 2022-01-27 2022-06-10 北京东方雨虹防水技术股份有限公司 Curing agent with ionic liquid structure and preparation method and application thereof
CN114605604B (en) * 2022-01-27 2024-03-22 北京东方雨虹防水技术股份有限公司 Curing agent with ionic liquid structure, preparation method and application

Also Published As

Publication number Publication date
CN109251292B (en) 2021-05-18

Similar Documents

Publication Publication Date Title
CN109251292A (en) Latent Curing Agents in Polyurethane and single-component polyurethane water-proof paint and preparation method
US3932360A (en) Polyurethane elastomers prepared from diamine curing agents
CN102633983B (en) Preparation method for siloxane-terminated organosilicon block polyurethane prepolymer
CN102676039B (en) Moisturecured one-component polyurethane paint and preparation method thereof
CN101544880B (en) Adhesive for soft package composite and preparation method thereof
CN102807812B (en) Latent curing single-component polyurethane water-proof coating and preparation method thereof
CN108179000B (en) A kind of low modulus height adherency assembled architecture silane modified polyether glue and preparation method thereof
CN106634534A (en) Anti-sagging single-ingredient polyurethane waterproof paint and preparation method thereof
CA1177196A (en) Storable flowable polyurethane composition
CN107325709A (en) A kind of single-component moisture curing polyurethane water-repellent paint and preparation method thereof
CA1200346A (en) Storage stable polyurethane compositions
CN104140754A (en) Solvent-free polyurethane coating and preparation method thereof
CN107033827A (en) A kind of single component silane modified polyether seal glue for building and preparation method thereof
CN109651585A (en) A kind of hydroxyl-terminated polyurethane and preparation method thereof
CN102660013A (en) Single-component polyurethane latent curing agent and preparation method and application thereof
CN109439266A (en) A kind of preparation method of silane coupler modified still monocomponent polyurethane adhesive
CN110452657B (en) Solvent-free polyurethane composite adhesive
CN104892895A (en) Hyperbranched blocked isocyanate, preparation method therefor and application thereof to coating
CN106590376B (en) A kind of anti-sag one-component carbamide paint and preparation method thereof
CN108864923A (en) Low temperature and low humidity solidifies non-solvent single-component polyurethane water-proof paint and preparation method thereof
JP4578876B2 (en) Moisture curable polyurethane sealant composition
CN106987202B (en) A kind of levelling type floor material and preparation method thereof and spraying method
CN102181224A (en) Reactive polymer cement waterproof coating
CN106147580A (en) A kind of preparation method of one-component solvent-free type polyurethane water-repellent paint
CN107142001A (en) A kind of affine water-repellent paint of nano-ZnO asphalt polyurethane bicomponent

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: 401220 No. 6 North Hua two road, Changshou District, Chongqing

Applicant after: Chongqing Keshun New Material Technology Co., Ltd

Address before: 401220 No. 6 North Hua two road, Changshou District, Chongqing

Applicant before: Chongqing Ke Shun Chemical New Material Co., Ltd.

GR01 Patent grant
GR01 Patent grant