WO2013057434A1 - Produit diluant comprenant une bis-oxazolidine, un catalyseur et un polyisocyanate, et ses utilisations - Google Patents
Produit diluant comprenant une bis-oxazolidine, un catalyseur et un polyisocyanate, et ses utilisations Download PDFInfo
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- WO2013057434A1 WO2013057434A1 PCT/FR2012/052376 FR2012052376W WO2013057434A1 WO 2013057434 A1 WO2013057434 A1 WO 2013057434A1 FR 2012052376 W FR2012052376 W FR 2012052376W WO 2013057434 A1 WO2013057434 A1 WO 2013057434A1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C265/00—Derivatives of isocyanic acid
- C07C265/14—Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D498/04—Ortho-condensed systems
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3296—Hydroxyamines being in latent form
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4808—Mixtures of two or more polyetherdiols
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—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
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—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
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine groups
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/80—Masked polyisocyanates
- C08G18/8061—Masked polyisocyanates masked with compounds having only one group containing active hydrogen
- C08G18/8064—Masked polyisocyanates masked with compounds having only one group containing active hydrogen with monohydroxy compounds
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
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- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1535—Five-membered rings
- C08K5/1539—Cyclic anhydrides
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C08L2205/00—Polymer mixtures characterised by other features
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- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
Definitions
- the present invention relates to a diluent for entering polyurethane resin compositions, especially into single-component polyurethane resin compositions.
- this diluent makes it possible to improve the properties of the composition, in particular the fluidity, while allowing a good speed of hardening.
- Polyurethane resins are very useful in many fields, especially in public works or buildings, where they make it possible to form coatings applied to the structures, in particular to guarantee their watertightness or protection.
- a one-component polyurethane resin composition comprises a prepolymer which is the reaction product between a polyisocyanate and a polyol, a solvent and / or diluent, a catalyst for the polymerization and optionally a compatibilizing agent, a filler and / or a plasticizer.
- the agent is necessarily present when the resin is a polyurethane resin with natural or synthetic bitumen or intended to be applied to a bituminous coating or masonry.
- the polyurethane compositions may be added as hardeners to accelerate the polymerization of the composition in the open air.
- a particularly preferred curing agent is bis-oxazolidine.
- bis-oxazolidine has certain advantages besides the acceleration of the polymerization by crosslinking.
- the use of bis-oxazolidine helps to reduce the foam formation that is inherent in the free latent polymerization of polyurethane resins.
- the isocyanate functions of the prepolymers react with each other in the presence of moisture in the air to form urea bonds by releasing carbon dioxide. The released gas causes foaming which generates surface defects on the final coating.
- bis-oxazolidine allows another mode of polymerization that does not generate carbon dioxide.
- Bis-oxazolidine reacts with the humidity of the air which leads to the opening of the two cycles of bis-oxazolidine.
- the open bis-oxazolidine has -OH and -NH functions that can react with the isocyanate functions of the prepolymers.
- the system polymerizes by forming urethane and urea linkages without generating carbon dioxide.
- certain bis-oxazolidines have the additional advantage of being diluent products which theoretically would make it possible to lower the viscosity of the composition and to improve compatibilization between the prepolymer and the bitumen. However, this diluting and compatibilizing effect can not be obtained with the use quantities recommended by the manufacturers because they are too low.
- bis-oxazolidine in amounts greater than those recommended produces a coating with instabilities and risks of under-polymerization. Indeed, the bis-oxazolidine used should be neither too reactive nor too reactive to prevent the composition from polymerizing during storage. If too little bis-oxazolidine is reactive, some cycles of bis-oxazolidine will not open fast enough to react with the isocyanate functions of the prepolymers. Cycles that have not opened during open polymerization will open once the formed coating, under the action of air humidity, which will generate free -OH and -NH functions in the final coating. This coating will be sensitive to water uptake which will cause swelling and detachment of the coating and an underpolymerization.
- the present inventors have found that it is possible to use a large amount of bis-oxazolidine, optionally with a mono-oxazolidine, to lower the viscosity of the composition and to avoid the formation of foam during the polymerization, without damaging the mechanical characteristics of the coating obtained. To do this, they found that it was necessary to implement, together with bis-oxazolidine, a high dose of catalyst and a polyisocyanate.
- This new composition having interesting properties of diluent, allows a decrease in the amounts of solvent in the composition and improves compatibilization, especially with bitumens.
- the introduction of the diluent into a composition according to the invention makes it possible to use prepolymers having a low isocyanate content, that is to say elastomeric prepolymers having an NCO functionality close to 2 and thus of have liquid compositions that give elastomeric coatings.
- prepolymers having a low isocyanate content that is to say elastomeric prepolymers having an NCO functionality close to 2 and thus of have liquid compositions that give elastomeric coatings.
- a composition having a high isocyanate content is required, otherwise bis-oxazolidine will not polymerize completely, which will cause defects in the coating.
- high isocyanate prepolymers can be used, such as prepolymers with a functionality close to 3.
- the trifunctional prepolymers lead to rigid and non-elastomeric coatings which is not desirable for producing sealing coatings.
- the present invention relates to a diluent product comprising a polyisocyanate, a bis-oxazolidine optionally with a mono-oxazolidine, and a catalyst.
- liquid composition is intended to mean a composition having a viscosity of between 1,000 and 40,000 centipoise, said viscosity being measured at 23 ° C. using a Brookfield viscometer (for viscosities less than 10,000 centipoise, the measurements are made with the R5 module at a speed of 30 rpm and for viscosities greater than 10,000 centipoise, the measurements are performed with the R6 module at a speed of 20 rpm).
- a Brookfield viscometer for viscosities less than 10,000 centipoise, the measurements are made with the R5 module at a speed of 30 rpm and for viscosities greater than 10,000 centipoise, the measurements are performed with the R6 module at a speed of 20 rpm).
- Such viscosity allows the application of the composition including a roller commonly called “rabbit leg roller” or a brush to form layers of 0.5 to 2 mm thick in one or more applications.
- one-component composition or “ready-to-use composition” is meant a composition which is intended to be applied as such by the end user, that is to say by the worker who will make the coating sealing.
- a ready-to-use composition is conventionally referred to in the "one-component” art, as opposed to compositions which require the addition of a catalyst or hardener or other reactive agent prior to use or which are to be blended for limited time (a few hours) before being applied.
- stable composition is meant a composition that can be stored for a minimum of 4 months without observing phase shift or caking.
- Ceramic coating means a coating that has sufficient mechanical strength to allow the movement of people and vehicles on its free surface.
- Coating with good mechanical strength means a coating which has a breaking strength greater than or equal to 2 MPa for a non-circulating coating and a tensile strength greater than or equal to 5 MPa for a circulating coating (the breaking strength is measured on an Instron device according to EN ISO 527-3).
- a non-flowable coating has a breaking strength of 2 to 3 MPa and a rollable coating has a breaking strength of 5 to 8 MPa. Higher values for a trafficable coating are obviously acceptable.
- self-protected coating resistant to UV radiation, weathering, chemical attack
- a coating that has a degradation rate of mechanical properties of less than 50% after aging for 2500 hours in an accelerated chamber of alternating cycles of aging 6 hours of exposure to UVA and 6 hours of water condensation at 60 ° C.
- Prepolymer means a reaction product of a polyol or a mixture of polyols having an OH number of functions of between 1.5 and 3 with a polyisocyanate or a mixture of polyisocyanates having an NCO number between 1.6 and 3, in a stoichiometric molecular ratio of about 1.5 to 2.5 polyisocyanate or polyisocyanate mixture relative to the polyol or polyol mixture.
- the polyols used are in particular of the polyether type such as a polyethylene glycol (PEG), a polypropylene glycol (PPG), a glycerin triol polypropylene glycol or a polytetrahydrofuran (PTHF) or a polyol of the polyester type, such as in particular the Priplast® 3196 sold by the company CRODA or the Krasol® LBH - p 3000 marketed by the company CRAYVALLEY or a polycaprolactone such as PCP 1000 marketed by the SOLVAY company.
- the polyether type such as a polyethylene glycol (PEG), a polypropylene glycol (PPG), a glycerin triol polypropylene glycol or a polytetrahydrofuran (PTHF)
- a polyol of the polyester type such as in particular the Priplast® 3196 sold by the company CRODA or the Krasol® LBH - p 3000 marketed by the company CRAYVAL
- polyisocyanate is meant a compound having more than one isocyanate function, the diisocyanate may therefore also be referred to herein as polyisocyanate.
- TDI toluene diisocyanate
- MDI diphenylmethane diisocyanate
- HDI hexamethylene diisocyanate
- IPDI isophorone diisocyanate
- solvent is meant the solvents conventionally used in polyurethane resin compositions, said solvents being inert with respect to the reagents contained in the composition, liquid at room temperature and having a boiling point below 240 ° C.
- exogenous plasticizer is meant a molecule or oligomer added to polymeric resin compositions, such as a polyurethane resin composition, to render the resulting material more flexible, less resistant, more resilient and / or easier to handle, said exogenous plasticizer being inert that is to say that it does not include reactive functions that would allow it to react on itself or with the prepolymers contained in the composition.
- 5-membered ring that includes a single nitrogen and at least one oxygen and opens in the presence of air humidity to lead to a single reactive nitrogen function.
- said diluent product does not include a solvent.
- a second subject of the invention is a diluent product consisting of:
- the number of isocyanate functions is estimated by calculation after NCO titration by back-testing the excess dibutylamine with hydrochloric acid (according to EN ISO 14896-2006).
- the amount of mono-oxazolidine in the diluent product according to the invention is between 0 and 40% by weight, preferably between 5 and 25% by weight, relative to the weight of the bis-oxazolidine.
- the amount of catalyst in the diluent product according to the invention is between 10 and 70%, preferably between 20 and 50% and more preferably between 30 and 50% by weight, based on the weight of the bis-oxazolidine.
- the diluent product according to the invention comprises:
- the bis-oxazolidine used in the diluent product according to the invention must not have a viscosity that is too high in order to have diluent properties.
- diluent properties is meant the ability of a product to dissolve and / or lower the viscosity of the composition in which it is added.
- said bis-oxazolidine has a viscosity of less than 80 mPa.s at 20 ° C., preferably of the order of 50 mPa.s at 20 ° C., measured using a Brookfield viscometer (module 3, 20 rpm).
- Bis-oxazolidine is a dioxazolane derivative.
- the bis-oxazolidine comprises a carbonate group between the two oxazolidine rings and corresponds to the following general formula:
- n is an integer that is 1, 2, 3 or 4;
- the bis-oxazolidine is that marketed by INCOREZ under the trademark Incozol® LV (CAS No. 145899-78-1) of the following general formula: i-Pr i-Pr
- Mono-oxazolidine is a mono-oxazolidine free of OH groups.
- the mono-oxazolidine is that marketed by Angus under the trade name Zoldine® ZE (CAS No. 7747-35-5) of the following general formula:
- the catalyst employed in the diluent product according to the invention is chosen from the group comprising organic acid anhydrides, long-chain fatty acids, organometallic salts, and mixtures thereof.
- the catalyst used in the diluent product according to the invention is an organic acid anhydride.
- MHTPA methyltetrahydrophthalic anhydride
- methylnadic anhydride also known as endocis-bicyclo (2, 2, 1) -5-heptene-2 anhydride
- 3-dicarboxylic acid - CAS No. 129-64-6 3-dicarboxylic acid - CAS No. 129-64-6
- the bis-oxazolidine marketed by INCOREZ under the trade name Incozol® LV is used with MHTPA as a catalyst.
- the polyisocyanate having a number of isocyanate functional groups strictly greater than 1 and less than or equal to 3.1 used in the diluent product according to the invention is chosen from the group comprising an aromatic, aliphatic and cycloaliphatic polyisocyanate and mixtures thereof.
- Said polyisocyanate may be chosen from the group of conventional polyisocyanates comprising 2,4-toluene diisocyanate (TDI), a trimer of TDI, diphenylmethane diisocyanate (MDI), a polymeric MDI, hexamethylene diisocyanate (HDI), a trimer of HDI, isophorone diisocyanate (IPDI), an IPDI trimer and mixtures thereof.
- TDI 2,4-toluene diisocyanate
- MDI diphenylmethane diisocyanate
- HDI hexamethylene diisocyanate
- IPDI isophorone diisocyanate
- IPDI trimer an IPDI trimer and mixtures thereof.
- An example of an aliphatic polyisocyanate that can be used is HDI having two isocyanate functions, such as in particular Desmodur® N3400 sold by the company Bayer.
- Said polyisocyanate used in the diluent product according to the invention may also be a prepolymer resulting from the reaction between a polyol or a mixture of polyols having an OH number of functions of between 1.5 and 3 with a polyisocyanate or a mixture of polyisocyanates having an NCO number of between 1.6 and 3, in a ratio such that the number of NCO functions of the polyisocyanate or polyisocyanate mixture relative to the number of OH functions of the polyol or mixture of polyols is from about 1.5 to 2.5.
- Said polyisocyanate used in the diluent product according to the invention may also be a polymerizable plasticizer consisting of a hydrocarbon chain whose single end carries more than one isocyanate function, said polymerizable plasticizer being the product of reaction between:
- an alcohol-type compound consisting of a hydrocarbon-based chain comprising and / or being substituted by an aromatic ring and / or an aliphatic ring and / or said hydrocarbon-based chain of the alcohol-type compound is substituted with at least two hydrocarbon-based chains which may comprise a unsaturation, and wherein said alcohol compound has an OH number of between 0.8% and 2.5%;
- a polyisocyanate comprising 2.1 to 3.2 isocyanate functional groups, preferably 2.5 to 3.1 isocyanate functional groups;
- said polymerizable plasticizer consisting of a hydrocarbon chain whose single end carries more than one isocyanate function is the reaction product of the polymeric MDI having 2.7 NCO functions with a phenolic coumarone resin or a resin of phenolic alpha-methylstyrene.
- Said polyisocyanate used in the diluent product according to the invention may also be a polyisocyanate masked with a monoalcohol, the NCO functionality of the masked polyisocyanate is between 1.5 and 2.2, said masked polyisocyanate being the product of reaction between a monoalcohol of formula B-OH on a polyisocyanate of formula A-NCO, where B represents an alkyl, and A represents a group comprising a number of isocyanate functions of between 1.5 and 2.2, preferably between 1.5 and 2.1, and even more preferably between 1 and 1.5. , 5 and 2.
- B represents an alkyl
- A represents a group comprising a number of isocyanate functions of between 1.5 and 2.2, preferably between 1.5 and 2.1, and even more preferably between 1 and 1.5. , 5 and 2.
- Such a masked polyisocyanate is described in Application No. PCT / FR2012 / 052372 filed October 18, 2012 in the name of
- said polyisocyanate masked with a monoalcohol whose isocyanate functionality is between 1.5 and 2.2 is the reaction product of the polymeric MDI with a C2-C20 aliphatic monoalcohol, preferably a monoalcohol. aliphatic C3-C 1 2, more preferably still C4-C10.
- the polyisocyanate used in the diluent product according to the invention may be a mixture of conventional polyisocyanate, masked polyisocyanate, prepolymer and / or polymerizable plasticizer as described above.
- the diluent product according to the invention should preferably be used quickly after its preparation so that the polyisocyanate does not react with the bi-oxazolidine.
- the diluent according to the invention is therefore a manufacturing intermediate which is not stable after two days of storage.
- the diluent according to the invention must be kept away from air and moisture.
- the diluent product is added in a polyurethane resin composition, preferably a one-component polyurethane resin composition, the resulting composition is stable and can be stored for a minimum of 4 months without observing phase shift or caking. .
- the diluent product according to the invention will be diluted in the mass of the composition and the polyisocyanate will not react with bis-oxazolidine until the composition is exposed to the moisture of the air.
- Another object of the invention is a polyurethane resin composition, preferably a stable one-component polyurethane resin composition, incorporating said diluent product. Because of the low viscosity and the diluting power of the diluent described above, the composition may be liquid while having a much lower amount of solvent than that required in an equivalent composition without this diluent product.
- This composition may be a one-component polyurethane resin composition or a part of a multi-component polyurethane resin composition, more particularly the isocyanate part of a two-component composition.
- the polyurethane resin composition according to the invention is not a polyurethane foam composition. Therefore, according to a particular embodiment, the composition according to the invention will not be mixed with water to polymerize and give a polyurethane foam. In the same way, the composition according to the invention is not intended to be mixed with a blowing agent such as in particular a gas, for example propane, butane, isobutane, carbon dioxide, carbon monoxide or dimethyl ether to form a polyurethane foam.
- a blowing agent such as in particular a gas, for example propane, butane, isobutane, carbon dioxide, carbon monoxide or dimethyl ether to form a polyurethane foam.
- the subject of the invention is therefore a polyurethane resin composition, preferably one-component stable, more preferably still stable and solvent-free, which comprises:
- At least one diluent product which comprises: ⁇ at least one polyisocyanate having a number of isocyanate functions strictly greater than 1 and less than or equal to 3.1, preferably greater than 1.5 and less than or equal to 2.2; at least one bis-oxazolidine and optionally a mono-oxazolidine;
- plasticizer optionally a plasticizer
- the amount of catalyst introduced into the resulting polyurethane resin composition is two to ten times higher than conventionally used in the industry. Indeed, usually the recommended dose of catalyst, especially organic acid anhydride, in a polyurethane resin composition is between 0.02 and 0.5% by weight relative to the weight of the composition.
- the bis-oxazolidine, and optionally the mono-oxazolidine is activated by the addition of catalyst in an amount ranging from 0.5 to 5%, preferably from 0.5 to 3.5. %, more preferably from 0.6 to 2.5%, and more preferably still from 1 to 2.2% by weight relative to the weight of the composition.
- the compositions according to the invention are liquid and have a solvent content of less than 10%, preferably less than 5%, more preferably less than 2%. They can even be totally devoid of solvent.
- the compositions according to the invention are liquid and have an exogenous plasticizer content of less than 10%, preferably less than 5%, more preferably less than 2%. They may even be totally devoid of exogenous plasticizer.
- the polyurethane resin composition according to the invention comprises:
- bituminous mixture from 0 to 50%, preferably from 5 to 45% and more preferably still from 10 to 40% by weight of a bituminous mixture relative to the weight of the composition
- composition comprising between 0.5 and 5% by weight of catalyst relative to the weight of the composition, said catalyst from the introduction of the diluent product according to the invention into said composition, excluding any other source of catalyst.
- the polyurethane composition according to the invention comprises a quantity of bis-oxazolidine which is dosed with respect to the isocyanate content of the composition, the source of isocyanate in the composition coming from a conventional polyisocyanate , a masked polyisocyanate, a prepolymer and / or a polymerizable plasticizer as defined above.
- the amount of bis-oxazolidine in the composition is preferably between 1 and 1.7 times the isocyanate content of the composition.
- the prepolymers used in the composition according to the invention are commercial products but they can also be synthesized before making the polyurethane resin composition. In a conventional manner, the prepolymers are formed by reaction between:
- a polyol having between 1.5 and 3 OH functions and a molecular weight of between 900 and 3000 g / mol, preferably between 1000 and 2800 g / mol and more preferably between 1500 and 2500 g / mol; and a di- and / or polyisocyanate having between 1.6 and 3 NCO functions;
- the polyol used to form the prepolymer can in particular be a polyol of the polyether, polyester, polybutadiene or polycarbonate type and their mixtures.
- the polyether type polyol may especially be a polypropylene glycol, a polyethylene glycol, a triol of glycerin polypropylene glycol, a triol of glycerin polyethylene glycol, or a polytetrahydrofuran.
- the polyester-type polyol may especially be a polycaprolactone, a dimer fatty acid polyester comprising 34 to 36 carbon atoms, a polyadipate polyester or a polyester polyphthalate.
- the polycarbonate polyol may in particular be a hexane-1,6-diol polycarbonate.
- the polyol having between 1.5 and 3 OH functions and a molecular weight between 900 and 3000 g / mol forming part of the prepolymer formation is a polytetrahydrofuran, a hexane-1,6-diol polycarbonate, a polyester of dimeric fatty acids comprising 34 to 36 carbon atoms, a polycaprolactone or a hydroxylated polybutadiene.
- the di- and / or polyisocyanate used to form the prepolymer may especially be MDI, polymeric MDI TDI, a TDI trimer, HDI, an HDI trimer, IPDI, an IPDI trimer, and mixtures thereof. .
- the di- and / or polyisocyanate involved in forming the prepolymer is MDI, polymeric MDI, TDI, a TDI trimer, and mixtures thereof.
- the bituminous mixture which can be used in the composition according to the invention is a mixture called cutback and comprises a natural or synthetic bitumen and optionally a plasticizing oil.
- the fillers that can be introduced into the present composition are in particular pigments, pulverulent fillers, such as calcium carbonate, titanium oxide, or others.
- Another object of the invention is the use of the diluent product as previously described in polyurethane resin compositions, preferably in stable one-component polyurethane resin compositions.
- the use of the diluent product according to the invention makes it possible to lower the viscosity of the composition while allowing a good curing speed by not generating foam.
- the invention also relates to the use of the composition according to the invention for producing coatings, in particular sealing coatings, which have no surface defects, such as bubbles, sufficiently resistant to the exterior, unprotected and possibly circulable.
- the coatings obtained have a water recovery quite satisfactory, that is to say less than 8% after 28 days of immersion in water at 20 ° C.
- the coatings obtained by the use of the composition according to the invention can cover horizontal, oblique, vertical, rough surfaces and / or with singular points.
- non-bituminous polyurethane resin compositions are preferably used for sealing horizontal surfaces that can be circulated outdoors, such as balconies, stadium stands, car parks, courtyards, etc.
- bituminous polyurethane resin compositions are preferably used for surveying, that is to say for producing a waterproof coating between a bituminous surface and a vertical wall or a singular point, or for renovating roofs. .
- the parts are expressed by weight. Viscosities are measured using a Brookfield Viscometer, mobile 5 or 6, at 20 rpm at 23 ° C, less than one week after manufacture of the product or composition.
- Incozol® LV bis-oxazolidine comprising a carbonate group (CAS No. 145899-78-1) marketed by INCOREZ.
- MHTPA methyltetrahydrophthalic anhydride marketed by the company HUNTSMAN under the trademark Aradur® HY918.
- Plastisol dispersion of PVC marketed under the trademark Pevikon® P709 in a plasticizer (Ruetasolv® Di).
- Hyperlast® 170/80 PTHF / TDI prepolymer marketed by DOW CHEMICAL.
- Suprasec® 2385 Modified MDI having 2 isocyanate functional groups marketed by Huntsman.
- Voranol® 2000 polypropylene glycol having a molecular weight of 2000 g / mol marketed by the company DOW CHEMICAL.
- Voranol® CP 450 polypropylene glycol glycerine triol having a molecular weight of 450 g / mol sold by the company DOW CHEMICAL.
- PolyTHF® 2000 polytetrahydrofuran having 2 NCO functions and a molecular weight of 2,000 g / mol sold by the company BASF.
- Ruetasolv® Di aromatic plasticizing oil of diisopropylnaphthalene sold by the company RUTGERS.
- the diluent product obtained has a viscosity of the order of 150cPS and improves the fluidity of single-component polyurethane resin compositions containing it, while allowing a good cure rate.
- the diluent product obtained has a viscosity of the order of 400cPS and improves the fluidity of single-component polyurethane resin compositions containing it, while allowing a good cure rate.
- TDI adduct is formed by mixing 350 parts by weight of TDI, 500 parts of Ruetasolv® Di. 150 parts of dipropylene glycol are gradually added to this mixture in order to keep the temperature below 55 ° C.
- TDI adduct synthesized above 100 parts by weight of Incozol® LV and 30 parts by weight of MHTPA are mixed at room temperature in a mixer.
- the diluent product obtained has a viscosity of the order of 150cPS and improves the fluidity of single-component polyurethane resin compositions containing it, while allowing a good cure rate.
- a masked polyisocyanate is prepared by mixing 37 parts of Suprasec® 5025 in 32.3 parts of Ruetasolv® Di, 12 parts of 2-ethylhexanol are gradually introduced, so that the temperature is below 50 ° C.
- the diluent product obtained has a viscosity of the order of 900cPS and improves the fluidity of single-component polyurethane resin compositions containing it, while allowing a good cure rate.
- composition obtained is diluted by weight with 20% of a solvent mixture comprising 2/3 of PMA-1/3 methyl ethyl ketone.
- This one-component polyurethane resin composition can be used for a roof covering. It has a dry extract of about 80% and therefore does not comply with all national legislation relating to the solvent content.
- This composition is thixotropic and has a viscosity of about 20,000cPs.
- Example 5 The procedure is as in Example 5, replacing 15% by weight of the solvent mixture (that is to say 3 ⁇ 4 of the solvent) with 15% by weight of the diluent obtained in Example 1.
- This ready-to-use, stable composition can be used for a roof covering. It has a solids content of around 95% and therefore complies with all national legislation on solvent content.
- This composition is thixotropic and has a viscosity of about 20,000cPs.
- Example 7 The procedure is as in Example 7, but replacing the 30 parts of xylene with 30 parts of the diluent product obtained in Example 1.
- a liquid, stable, solvent-free, one-component polyurethane resin composition is obtained which makes it possible to produce flawless sealing coatings (no bubbling) and having good mechanical characteristics.
- the coatings obtained with this composition have a water recovery quite satisfactory, which is less than 8% after immersion for 28 days in a water bath at 20 ° C.
- a stable liquid composition is obtained which makes it possible to produce internal sealing coatings.
- Example 9 The procedure is as in Example 9, but replacing the 15 parts of xylene with 15 parts of the diluent product obtained in Example 1.
- a composition is prepared having the following formula: A. Voranol® 2000 200 parts
- a prepolymer is prepared by baking at 80 ° C. for 1 h 30 by introducing the constituents A to D. Then, with this prepolymer, the components E and F are added under cold conditions, with stirring. This system is hardening enough. slow, that is to say that the curing time is greater than 24 hours; it is generally uncatalysed because catalysis causes a too rapid formation of carbon dioxide and therefore bubbling and foaming that one never avoids completely.
- composition is approximately 94% dry extract, ie approximately 6 ⁇ 6 of solvent.
- a diluent product according to the invention is prepared which comprises:
- a prepolymer was prepared as in Example 11, component E was added and 7 parts of xylene and 32 parts of the diluent prepared above were added.
- composition obtained is different from that of Example 11 by the following 3 properties:
- the solids content of this composition is 98%, that is to say it contains 2% of solvent, which makes it both in accordance with the new regulations relating to the solvent content, and classified in USA as a solvent-free product.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/352,033 US20140357786A1 (en) | 2011-10-20 | 2012-10-18 | Diluent Product Comprising a Bis-Oxazolidine, a Catalyst and a Polyisocyanate, and Uses Thereof |
CA2850288A CA2850288A1 (fr) | 2011-10-20 | 2012-10-18 | Produit diluant comprenant une bis-oxazolidine, un catalyseur et un polyisocyanate, et ses utilisations |
EP12790598.2A EP2768876A1 (fr) | 2011-10-20 | 2012-10-18 | Produit diluant comprenant une bis-oxazolidine, un catalyseur et un polyisocyanate, et ses utilisations |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1159496A FR2981654B1 (fr) | 2011-10-20 | 2011-10-20 | Produit diluant comprenant une bisoxazolidine, un catalyseur et un polyisocyanate, et ses utilisations |
FR1159496 | 2011-10-20 |
Publications (1)
Publication Number | Publication Date |
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WO2013057434A1 true WO2013057434A1 (fr) | 2013-04-25 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/FR2012/052376 WO2013057434A1 (fr) | 2011-10-20 | 2012-10-18 | Produit diluant comprenant une bis-oxazolidine, un catalyseur et un polyisocyanate, et ses utilisations |
Country Status (5)
Country | Link |
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US (1) | US20140357786A1 (fr) |
EP (1) | EP2768876A1 (fr) |
CA (1) | CA2850288A1 (fr) |
FR (1) | FR2981654B1 (fr) |
WO (1) | WO2013057434A1 (fr) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5219979A (en) * | 1991-02-11 | 1993-06-15 | Enichem Synthesis S.P.A. | Polyoxazolidines with a structure containing carbonate groups, procedure for their preparation and use |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19581546T1 (de) * | 1994-12-27 | 1997-04-24 | Yokohama Rubber Co Ltd | Bei Raumtemperatur härtende Polyurethanmassen |
-
2011
- 2011-10-20 FR FR1159496A patent/FR2981654B1/fr not_active Expired - Fee Related
-
2012
- 2012-10-18 EP EP12790598.2A patent/EP2768876A1/fr not_active Withdrawn
- 2012-10-18 WO PCT/FR2012/052376 patent/WO2013057434A1/fr active Application Filing
- 2012-10-18 CA CA2850288A patent/CA2850288A1/fr not_active Abandoned
- 2012-10-18 US US14/352,033 patent/US20140357786A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5219979A (en) * | 1991-02-11 | 1993-06-15 | Enichem Synthesis S.P.A. | Polyoxazolidines with a structure containing carbonate groups, procedure for their preparation and use |
Non-Patent Citations (1)
Title |
---|
NG CARTER: "Oxazolidine diluents: Reacting for the environment", vol. 82, no. 10, 1 January 1999 (1999-01-01), pages 497 - 502, XP002677861, ISSN: 0030-1337, Retrieved from the Internet <URL:http://www.springerlink.com/content/p78g11776t505426/?MUD=MP> DOI: 10.1007/BF02692645 * |
Also Published As
Publication number | Publication date |
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CA2850288A1 (fr) | 2013-04-25 |
FR2981654B1 (fr) | 2014-11-28 |
EP2768876A1 (fr) | 2014-08-27 |
US20140357786A1 (en) | 2014-12-04 |
FR2981654A1 (fr) | 2013-04-26 |
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