Non-fossil based polyurethane for dynamic applications

Abstract

The present invention relates to a polyurethane composition, obtained by a process comprising reacting at least a polyisocyanate composition (IC), and a polyol composition (PC), wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid. The present invention further relates to a process for preparing said polyurethane composition as well as the use thereof for preparing articles for dynamic applications, for example sport applications, rollers or wheels.

Description

[0001] 240204W001

[0002] Non-fossil based Polyurethane for dynamic applications

[0003] The present invention relates to a polyurethane composition, obtained by a process comprising reacting at least a polyisocyanate composition (IC), and a polyol composition (PC), wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid. The present invention further relates to a process for preparing said polyurethane composition as well as the use thereof for preparing articles for dynamic applications, for example sport articles, rollers or wheels.

[0004] Polymeric hydroxy compounds such as polyester polyols react with isocyanates to form polyurethanes which have various possible uses, depending on their specific mechanical properties. Polyester polyols in particular have favorable properties and so are used for high-grade polyurethane products.

[0005] Polyurethanes at least partly obtained by use of renewable raw materials are known, for example from

[0006] WO 2011 / 083000 A1, WO 2012 / 173911 A1 or WO 2010 / 031792 A1.

[0007] The use of natural raw materials in the polymer industry is becoming more and more significant because the starting materials are occasionally less costly. There is also increasing market demand for polyurethane products based on renewable raw materials and hence at least partial replacement of petrochemical raw materials.

[0008] Natural raw materials are more particularly substances obtained by processing plants or parts of plants (or else animals). Raw materials from renewable sources are characterized by a significant proportion of the carbon isotope14C. Its determination allows experimental determination of the proportion of renewable raw materials. Renewable raw materials differ from materials obtained by chemical synthesis and / or by petroleum processing in that they are less homogeneous - their composition can vary to a distinctly greater extent.

[0009] Fluctuations in the composition of natural raw materials are for example dependent on factors such as the climate and region in which the plant grows, the time of year at which it is harvested, variations between biological species and subspecies and the type of extraction method used to recover the natural raw material (extrusion, centrifugation, filtering, distillation, cutting, pressing, etc.). These fluctuations in the composition of natural raw materials and the presence of further, difficu It-to-remove concomitants, such as degradation products or impurities, frequently lead to problems in further processing and therefore limit the industrial use of these materials.

[0010] Preparing polyester polyols by reaction of starting materials obtained from natural raw materials is of enormous interest specifically for the production of (thermoplastic) polyurethanes.240204W001

[0011] -2 - US-A-5695884 discloses the use of polyester polyols based on sebacic acid for thermoplastic polyurethanes of high crystallinity. US 2006 / 0141883 A1 and US 2006 / 0121812 also describe the use of polyester polyols based on sebacic acid for polyurethanes for fibers having a high melting point. WO 00 / 51660 A1 describes polyurethanes for heart catheters which can utilize polyester polyols based on sebacic acid; again, sufficient hardness is required. US 2007 / 0161731 A1 and US 6395833 B1 further disclose using sebacic acid to produce polyester polyols for use in polyurethane chemistry.

[0012] US 20100266799 A discloses a prepolymer or elastomer which is the reaction product of at least one polyester polyol or fatty acid derived polyol and at least one isocyanate. The use thereof for the preparation of conveying belts, elastomeric wheels and tires is also disclosed.

[0013] By the use of natural or non-fossil based materials, the product carbon footprint of the final polyurethane can be reduced. However, besides the product carbon footprint reduction, also the dynamic properties of the polyurethane should be improved for applications like rollers, wheels, etc, which most often are exposed to a lot of stress when run under high load or high velocity. The stress can lead to melting of the PU product and finally failure of the roll.

[0014] It was an object of the present invention to provide polyurethanes, in particular thermoplastic polyurethanes and cast elastomers, that have good dynamic properties, are obtainable when using renewable raw material.

[0015] This object has been solved by a polyurethane composition, obtained by a process comprising reacting at least the following components:

[0016] (a) a polyisocyanate composition (IC), and

[0017] (b) a polyol composition (PC),

[0018] wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid.

[0019] According to a preferred embodiment, the present invention is directed to a polyurethane composition, obtained by a process comprising reacting at least the following components:

[0020] (a) a polyisocyanate composition (IC), and

[0021] (b) a polyol composition (PC),

[0022] wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid, and

[0023] wherein the value of the tan d measured in a temperature range of from 60 to 100° does not increase with a rate of more than 0.1 per 5°C determined using Dynamical Mechanical Analysis (DMA) measured according to DIN EN ISO 6721-1:2011-08 of specimens yielded from samples, which were annealed 16 h / 80 to 100 °C and the measurement carried out in torsion mode with a heating rate of 2 °C / min and a frequency of 1 Hz.240204W001

[0024] - 3 - It has been surprisingly found that a PCF reduced polyurethane by the use of non-fossil based polyesters and better dynamic properties for the use as rollers and wheels can be achieved in particular by the use of sebacic acid or azelaic acid based polyester polyols. The superior dynamic performance of these polyurethanes is indicated by DMA measurements. It was found that the glass transition temperature decreases which can enable a broader temperature range of use. To prove that a feedstock was obtained from renewable raw materials, the14C method of ASTMD6866 can be used for example.

[0025] It has surprisingly been found that the glass transition temperature decreases with rising numbers of carbon atoms in the diacid which can enable a broader temperature range of use. Additionally, the profile of the curves of the polyurethane composition according to the present invention only shows a significant increase at temperatures of 100°C or above. This indicates the improved dynamic properties, which are a core value for articles for dynamic applications such as for example rolls and wheels. The materials according to the present invention can be used under high load or high velocity without significant material heating, melting, or degradation.

[0026] According to the present invention, the value of the tan d measured in a temperature range of from 60 to 100° does not increase with a rate of more than 0.1 per 5°C determined using Dynamical Mechanical Analysis (DMA) measured according to DIN EN ISO 6721-1:2011-08 of specimens yielded from samples, which were annealed 16 h / 80 to 100 °C and the measurement carried out in torsion mode with a heating rate of 2 °C / min and a frequency of 1 Hz. Preferably, the value of the tan d measured in a temperature range of from 60 to 100° does not increase with a rate of more than 0.01 per 5°C, in particular with a rate of more than 0.005 per 5°C.

[0027] The polyurethane may include further components, for example at least one chain extender or else hydrolysis control agents, antioxidants, UV stabilizers, plasticizers, organic or inorganic fillers, demolding assistants, and also further customary additives.

[0028] In one further embodiment, therefore, the present invention also provides a polyurethane as described above that comprises at least one chain extender.

[0029] According to a further embodiment, the present invention is also directed to the polyurethane composition as disclosed above, wherein the polyurethane is a thermoplastic polyurethane or a cast elastomer.

[0030] The polyurethanes of the present invention are obtained by using at least one polyol composition, wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid.

[0031] In principle, any suitable polyester polyol known to a person skilled in the art is useful for the purposes of the present invention. The polyester polyols employed for the purposes of the present invention preferably have an average func-240204W001

[0032] -4-tionality in the range from 1.8 to 2.3, more preferably in the range from 1.9 to 2.2 and especially equal to 2. The polyester polyol of the present invention is preferably a polyester diol. Accordingly, in a further embodiment, the present invention provides a polyurethane based on at least one polyisocyanate and at least one polyester diol, wherein the polyester polyol (P1) is based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodec-anoic acid.

[0033] Suitable molecular weight ranges for the polyester polyols employed for the purposes of the present invention are known per se to a person skilled in the art. In one preferred embodiment, the molecular weight of the polyester polyol is in the range from 1000 to 3000 g / mol, more preferably in the range from 1500 and 2500 g / mol and most preferably in the range from 1800 and 2200 g / mol.

[0034] According to a further embodiment, the present invention is also directed to the polyurethane composition as disclosed above, wherein the polyol (P1) has a molecular weight Mn in the range of from 1000 to 3000 g / mol. Unless otherwise noted, the molecular weight is determine by GPC according to DIN 55672-1:2016-03.

[0035] According to the present invention, suitable polyols are in particular polyols with only few sidechains, preferably linear polyols. Preferred are unipolar polyester polyols.

[0036] In the present invention, the polyester polyol is based on a polyhydric alcohol. Suitable polyhydric alcohols include, for example, polyhydric aliphatic alcohols, for example aliphatic alcohols having 2, 3, 4 or more OH groups, for example 2 or 3 OH groups. Suitable aliphatic alcohols for the purposes of the present invention include, for example, C2 to C12 alcohols, preferably C2 to C8 alcohols and most preferably C2 to C6 alcohols. It is preferable for the purposes of the present invention for the polyhydric alcohol to be a diol, and suitable diols are known per se to a person skilled in the art.

[0037] Suitable aliphatic C2 to 06 diols include, for example, ethylene glycol, diethylene glycol, 3-oxapentane-1,5-diol, 1,3-propanediol, 1 ,2-propanediol, dipropylene glycol, 1 ,4-butanediol, 1 ,5-pentanediol, 1 ,6-hexanediol, 2-methyl-1 ,3-pro-panediol and 3-methyl-1 ,5-pentanediol. It is further preferable for the polyhydric alcohol to be selected from the group consisting of ethylene glycol, diethylene glycol, 1 ,3-propanediol and 1 ,4-butanediol.

[0038] In one further embodiment, the present invention also provides a polyurethane as described above wherein the at least one polyhydric alcohol is selected from the group consisting of aliphatic C2 to C6 diols.

[0039] The present invention may also utilize a mixture of two or more polyhydric alcohols.

[0040] It is also possible for the purposes of the present invention to employ a polyhydric alcohol at least partly obtained from renewable raw materials. The polyhydric alcohol in question may be partly or wholly obtained from renewable raw materials. It is also possible to employ a mixture of two or more polyhydric alcohols in the present invention.240204W001

[0041] - 5- Where a mixture of two or more polyhydric alcohols is employed, one or more of the polyhydric alcohols employed may be at least partly obtained from renewable raw materials.

[0042] 1.3-Propanediol may accordingly comprise synthetically produced 1 ,3-propanediol, but in particular 1 ,3-propanediol from renewable raw materials ("biobased 1 ,3-propanediol” or "non-fossil based 1 ,3-propandiol”). Biobased 1,3-pro-panediol is obtainable from maize (corn) and / or sugar for example. A further possibility is the conversion of waste glycerol from biodiesel production. In one further preferred embodiment of the invention, the polyhydric alcohol is a 1.3-propanediol at least partly obtained from renewable raw materials.

[0043] According to a further embodiment, the present invention is also directed to the polyurethane composition as disclosed above, wherein the polyol is non-fossil based.

[0044] Alcohols having three or more OH groups can also be used to enhance the functionality of the polyester polyols. Examples of alcohols having three or more OH groups are glycerol, trimethylolpropane and pentaerythritol. It is also possible to use oligomeric or polymeric products having two or more hydroxyl groups. Examples thereof are polytetrahydrofuran, polylactones, polyglycerol, polyetherols, polyesterol or a,co-dihydroxy poly butadiene.

[0045] The present invention may also utilize a mixture of two or more dicarboxylic acids.

[0046] Suitable dicarboxylic acids are obtainable from natural raw materials by specific methods of processing. Sebacic acid (1 ,8-octanedicarboxylic acid) is a member of the homologous series of aliphatic dicarboxylic acids. They are obtainable for example from natural raw materials such as sugar or corn (maize), by fermentation. Azelaic acid at least partly obtained from renewable raw materials is a further suitable dicarboxylic acid for the purposes of the present invention.

[0047] According to a further embodiment, the present invention is also directed to the polyurethane composition as disclosed above, wherein polyester polyol (P1) is selected from polyester polyols based on an acid selected from the group consisting of azelaic acid and sebacic acid.

[0048] According to the present invention, at least one of the dicarboxylic acids employed and preferably also the polyhydric alcohol employed are preferably at least partly obtained from renewable raw materials. At least partly is to be understood as meaning in the context of the present invention that the corresponding dicarboxylic acid or the alcohol was obtained from renewable raw materials to an extent of not less than 25%, in particular that it was obtained from renewable raw materials to an extent in the range from 50 to 100%, more preferably in the range from 75 to 100%, yet more preferably in the range from 85 to 100%, and most preferably in the range from 95 to 100%.240204W001

[0049] - 6 - Processes for preparing polyester polyols by polycondensation of the corresponding hydroxy compounds with dicarboxylic acids preferably at elevated temperature and reduced pressure preferably in the presence of known catalysts are common knowledge and have been extensively described.

[0050] Processes for preparing polyurethanes are likewise common knowledge. For example, thermoplastic polyurethanes are obtainable by reaction of isocyanates with polyester polyol and optionally chain-extending agents having a molecular weight of 50 to 499 g / mol in the presence or absence of catalysts and / or customary assistants.

[0051] The ratio of the components employed may in principle vary between wide limits. This ratio of the components employed is typically described by the ratio of NCO groups to OH groups, the OH groups being the sum total of the OH groups for the employed polyester polyol, chain extender and any further additives.

[0052] The ratio of NCO to OH groups in the present invention is in the range from 0.9 to 1.1 for example and is preferably in the range from 0.95 to 1.05.

[0053] Preferably, polyurethanes are prepared according to the present invention by reacting the isocyanate with the polyester polyol and optionally further isocyanate-reactive compounds and optionally chain-extending agents in the presence or absence of catalysts and / or customary assistants. Plasticizers may also be employed in the present invention for example. The plasticizers which are used, which is preferable according to the present invention, may have isocyanate-reactive groups. However, it is likewise possible for the plasticizers employed not to have any isocyanatereactive groups. Suitable plasticizers are known per se, see for instance the Plastics Additive Handbook, 5th edition, H. Zweifel, ed, Hanser Publishers, Munich, 2001.

[0054] The polyurethane of the present invention is also obtainable via the intermediate stage of prepolymers. Only incomplete chains of the polymer are initially prepared in order that the end-user may have the benefit of simpler processing, particularly of the isocyanate component. The incompletely reacted starting materials thus provided are also referred to as the system, which are very important in the manufacture of shoe soles for example.

[0055] As organic isocyanates there may be used commonly known aromatic, aliphatic, cycloaliphatic and / or araliphatic isocyanates, preferably diisocyanates., Preferably, the isocynate is also based on non-fossil raw materials. According to a further embodiment, the present invention is also directed to the polyurethane composition as disclosed above, wherein the isocyanate is non-fossil based.

[0056] Suitable are for example 2,2'-, 2,4'- and / or 4,4'-diphenylmethane diisocyanate (MDI), 1 ,5-naphthylene diisocyanate (NDI), 2,4- and / or 2,6-tolylene diisocyanate (TDI), diphenylmethane diisocyanate, 3,3‘-dimethyldiphenyl diisocyanate, I ,2-diphenylethane diisocyanate and / or phenylene diisocyanate, tri-, tetra-, penta-, hexa-, hepta- and / or octamethylene diisocyanate, 2-methylpentamethylene 1 ,5-diisocyanate, 2— ethylbutylene 1 ,4-diisocyanate, pentamethylene240204W001

[0057] - 7 - 1 ,5-diisocyanate, butylene 1 ,4-diisocyanate, 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane (isophorone diisocyanate, IPDI), 1 ,4-phenylene diisocyanate, 1-isocyanato-4-[(4-isocyanatocyclohexyl)methyl]cyclohexane (H12MDI), 2,6-diisocyanatohexanecarboxylic ester, 1,4- and / or 1,3-bis(isocyanatomethyl)cyclohexane (HXDI), 1,4— cyclohexane diisocyanate, 1 —methyl— 2,4— and / or -2,6-cyclohexane diisocyanate and / or 4,4'-, 2,4'- and 2,2'- dicyclohexylmethane diisocyanate, preferably 2,2'-, 2,4'- and / or 4,4'-diphenylmethane diisocyanate (MDI), 1 ,5-naphthylene diisocyanate (NDI), 2,4- and / or 2,6-tolylene diisocyanate (TDI), hexamethylene diisocyanate, 1-isocyanato-4-[(4-iso-cyanatocyclohexyl)methyl]cyclohexane, and / or IPDI, more particularly 4,4'-MD I and / or hexamethylene diisocyanate and / or H12MDI.

[0058] According to a further embodiment, the present invention is also directed to the polyurethane composition as disclosed above, wherein the polyisocyanate composition comprises a polyisocyanate selected from the group consisting of 2,2'-, 2, 4'- and 4,4'-diphenylmethane diisocyanate (MDI), prepolymers of diphenylmethane diisocyanate, pentanediisocyanate, hexamethylene 1 ,6-diisocyanate (HDI), 1 ,4-phenylene diisocyanate, 1 ,5-naphthylene diisocyanate (NDI). .

[0059] According to a further embodiment, the present invention is also directed to the polyurethane composition as disclosed above, wherein the polyol composition comprises a chain extender.

[0060] Useful chain extenders include commonly known aliphatic, araliphatic, aromatic and / or cycloaliphatic compounds having a molecular weight of 50 to 499 g / mol, preferably 2-functional compounds, examples being alkanediols having 2 to 10 carbon atoms in the alkylene radical, preferably 1 ,4-butanediol, 1 ,6-hexanediol and / or di-, tri-, tetra-, penta-, hexa-, hepta-, octa-, nona- and / or decaalkylene glycols of 3 to 8 carbon atoms, preferably unbranched alkanediols, more particularly 1 ,3-propanediol and 1 ,4-butanediol.

[0061] For the purposes of the present invention it is preferable for the chain extender to be selected from the group consisting of aliphatic C2-C6 diols, more preferably from the group consisting of 1 ,3-propanediol, 1 ,4-butanediol and 1 ,6-hexanediol.

[0062] In one further embodiment, the present invention also provides a polyurethane as described above wherein the at least one chain extender is selected from the group consisting of C2 to C6 diols.

[0063] It is further preferable for the purposes of the present invention for the chain extender employed to be at least partly obtained from renewable raw materials. It is possible for the purposes of the present invention for the chain extender employed to be partly or wholly obtained from renewable raw materials.

[0064] In a further preferred embodiment, the chain extender is accordingly selected from the group consisting of 1,3-pro-panediol and 1 ,3-propanediol at least partly obtained from renewable raw materials.240204W001

[0065] - 8 - In a further preferred embodiment, preferably the dicarboxylic acid and the polyhydric alcohol employed for preparing the polyester polyol and the chain extender employed have each been at least partially obtained from renewable raw materials.

[0066] Suitable catalysts for speeding in particular the reaction between the NCO groups of the polyisocyanates and the polyol component are the customary compounds which are known from the prior art and are derivable from the literature. Examples of suitable catalysts in the context of the present invention are tertiary amines, for example triethylamine, dimethylcyclohexylamine, N-methylmorpholine, N,N'— dimethylpiperazine, 2-(dimethylaminoethoxy)ethanol, diazabicyclo (2,2,2)octane and the like and also, more particularly, organic metal compounds such as titanic esters, iron compounds such as, for example, iron(VI) acetylacetonate, tin compounds, for example tin diacetate, tin dioctoate, tin dilaurate or the tin dialkyl salts of aliphatic carboxylic acids such as dibutyltin diacetate, dibutyltin dilaurate or the like. The catalysts are customarily used in amounts of 0.00001 to 0.1 part by weight per 100 parts by weight of polyhydroxy compound.

[0067] In addition to catalysts, the structural components, i.e., the polyols, isocyanates and chain extenders, may also have added to them customary auxiliaries. Examples are blowing agents, surface-active substances, abrasion additives, flame retardants, nucleating agents, lubricating and demolding aids, dyes and pigments, stabilizers, for example against hydrolysis, light, heat or discoloration, inorganic and / or organic fillers, reinforcing agents, plasticizers and metal deactivators. Hydrolysis control agents used are preferably oligomeric and / or polymeric aliphatic or aromatic carbodiimides. To stabilize the polyurethane of the present invention against aging, the polyurethane preferably has stabilizers added to it. Stabilizers for the purposes of the present invention are additives which protect a plastic or a plastic mixture against harmful environmental effects. Examples are primary and secondary antioxidants, thiosynergists, organophosphorus compounds of trivalent phosphorus, hindered amine light stabilizers, UV absorbers, hydrolysis control agents, quenchers and flame retardants. Examples of commercial stabilizers are given in Plastics Additive Handbook, 5th Edition, H. Zweifel, ed., Hanser Publishers, Munich, 2001, p.98-p.136. When the polyurethane of the present invention is exposed to thermal oxidative damage, during use, antioxidants can be added. Preference is given to using phenolic antioxidants. Examples of phenolic antioxidants are given in Plastics Additive Handbook, 5th edition, H. Zweifel, ed, Hanser Publishers, Munich, 2001, pp.98-107 and p.116-p.121. Preference is given to phenolic antioxidants having a molecular weight greater than 700 g / mol. One example of a phenolic antioxidant which is preferably used is pentaerythrityl tetrakis (3-(3,5-bis(1 , 1 -dimethylethyl)-4-hydroxyphenyl)propionate) (Irganox® 1010) or other high molecular weight condensation products formed from corresponding antioxidants. The phenolic antioxidants are generally used in concentrations of between 0.1% and 5% by weight, preferably between 0.1% and 2% by weight and especially between 0.5% and 1.5% by weight, all based on the total weight of the polyurethane. Preference is further given to using antioxidants which are amorphous or liquid. Even though the polyurethanes of the present invention are by virtue of their preferable composition distinctly more stable to ultraviolet radiation than, for example, polyurethanes plasticized with phthalates or benzoates, stabilization with phenolic stabilizers only is often insufficient. For this reason, the polyurethanes of the present invention which are exposed to UV light are preferably240204W001

[0068] -9 -additionally stabilized with a UV absorber. UV absorbers are molecules which absorb high energy UV light and dissipate the energy. UV absorbers widely used in industry belong for example to the group of the cinnamic esters, the diphenyl cyanoacrylates, the oxamides (oxanilides), more particularly 2-ethoxy-2'-ethyloxanilide, the formamidines, the benzylidenemalonates, the diarylbutadienes, triazines and also the benzotriazoles. Examples of commercial UV absorbers are given in Plastics Additive Handbook, 5th edition, H. Zweifel, ed, Hanser Publishers, Munich, 2001 pp.116-122. In a preferred embodiment, the UV absorbers have a number average molecular weight greater than 300 g / mol and more particularly greater than 390 g / mol. Furthermore, the UV absorbers which are preferably used should have a molecular weight of not greater than 5000 g / mol and more preferably of not greater than 2000 g / mol. The group of the benzotriazoles is particularly useful as UV absorbers. Examples of particularly useful benzotriazoles are Tinuvin® 213, Tinuvin® 328, Tinuvin® 571, and also Tinuvin® 384 and Eversorb®82. The UV absorbers are preferably added in amounts between 0.01% and 5% by weight, based on the total mass of polyurethane, more preferably between 0.1% and 2.0% by weight and especially between 0.2% and 0.5% by weight, all based on the total weight of the polyurethane. Often, an above-described UV stabilization based on an antioxidant and a UV absorber is still not sufficient to ensure good stability for the polyurethane of the present invention against the harmful influence of UV rays. In this case, a hindered amine light stabilizer (HALS) can preferably be added in addition to the antioxidant and the UV absorber. A particularly preferred UV stabilization comprises a mixture of a phenolic stabilizer, a benzotriazole and a HALS compound in the above-described preferred amounts. However, it is also possible to use compounds which combine the functional groups of the stabilizers, for example sterically hindered piperidylhydroxybenzyl condensation products such as for example di(1 ,2,2,6,6-pentamethyl-4-piperidyl) 2-butyl-2-(3,5-di-tert-butyl-4-hydroxybenzyl) malonate, Tinuvin® 144.

[0069] Particular suitability also extends to waxes which perform important functions not only in the industrial production of the polyurethanes but also in their processing. The wax serves as a friction-reducing internal and external lubricant and thus improves the flow properties of the polyurethane. In addition, it is said to act as a release agent preventing the adherence of polyurethane to the surrounding material (the mold for example), and as a dispersant for other added substances, for example pigments and antiblocking agents. Suitable are for example fatty acid esters, such as stearic esters and montan esters and their metal soaps, but also fatty acid amides, such as stearylamides and oleamides, or else polyethylene waxes. An overview of waxes used in thermoplastics is given in H. Zweifel (Ed.): Plastics Additives Handbook, 5th edition, HanserVerlag, Munich 2001, pp. 443 ff., EP-A 308683, EP-A 670339 and JP-A 5 163431.

[0070] It is further also possible to add ester and amide combinations as per DE-A 19607870 and wax mixtures of montan acid and fatty acid derivatives (DE-A 19649290), and also hydroxystearylamides as per DE 102006009096 A1.

[0071] A particularly preferred embodiment utilizes fatty acids as per DE-A-19706452 of 24 to 34 carbon atoms and / or esters and / or amides of these fatty acids in the case of polyurethanes with desired reduced tendency to take up and / or give off substances, for which the fatty acids and / or their derivatives are used in a weight fraction of 0.001 to 15 wt%,240204W001

[0072] - 10-based on the total weight of the polyisocyanate polyaddition products. A further preferred embodiment utilizes a mixture as per EP-A-1826225 of the reaction products of alkylenediamines with a) one or more linear fatty acids and of alkylenediamines with b) 12-hydroxystearic acid and / or of the reaction products of alkylenediamines with c) 12-hy-droxystearic acid and one or more linear fatty acids. This mixture thus comprises the reaction products of alkylenediamine with a) and b) and / or c).

[0073] Further details about the abovementioned auxiliaries and added substances are derivable from the technical literature, for example from Plastics Additive Handbook, 5th edition, H. Zweifel, ed, Hanser Publishers, Munich, 2001. All molecular weights mentioned in this reference have the unit [g / mol] .

[0074] The present invention also provides a process for preparing a polyurethane composition, comprising

[0075] (i) providing a polyisocyanate composition (IC) and a polyol composition (PC);

[0076] (ii) reacting the polyisocyanate composition (IC) and the polyol composition (PC);

[0077] wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid.

[0078] The preparation of the polyurethanes can be carried out according to the known processes as a batch operation or as a continuous operation, for example using reactive extruders or the belt process by the one shot or the prepolymer process, preferably by the one shot process. In these processes, the reactant components can be mixed in succession or at the same time, and the reaction ensues immediately. In the extruder process, the structural components and also optionally chain extender, catalyst and / or added substances are introduced into the extruder individually or as a mixture, reacted at temperatures of 100 to 280°C and preferably 140 to 250°C, for example, and the polyurethane obtained is extruded, cooled down and pelletized.

[0079] According to the present invention, it is also possible to prepare a mixture from the polyisocyanate composition (IC) and the polyol composition (PC), preferably at a temperature in the range of from 40 to 80°C, and prepare a molded body using a casting process.

[0080] The processing of the polyurethanes of the present invention, which are typically in the form of pellets or powders, to form the desired self-supporting films / sheets, molded parts, rollers, fibers, linings in automobiles, hoses, cable plugs, bellows, drag cables, cable sheathing, gaskets, belts or shock-absorbing elements is effected according to customary processes, for example injection molding, calendering or extrusion, in particular for preparing sports articles, rollers or wheels

[0081] According to a further aspect, the present invention is also directed to the use of a polyurethane composition as disclosed above or a polyurethane composition obtained or obtainable according to the process as disclosed above for preparing rollers or wheels.240204W001

[0082] - 11 - The injection molded articles can be envisioned to be used for applications such as wheels I rollers, railway pads, animal eartags, sports articles such as shoe outsole, midsole, ski boots, seals and gaskets and for automotive IM applications such as top mounts, engine mounts. Under extrusion application, it can be envisioned to be used for film extrusion such as for ski films, roofliners, wound dressing breathable films, films for surface protection and extruded profiles such as for conveyor belts, elevator Belts, dragchain and timing belts. It can also be envisioned to be used for tubes and hoses application such as e.g. in drinking water pipes.

[0083] According to a further aspect, the present invention is also directed to a molded body comprising a polyurethane composition as disclosed above or a polyurethane composition obtained or obtainable according to the process as disclosed above, in particular wherein the molded body is a role or a wheel, a film, such as for ski films, roofliners, wound dressing breathable films, films for surface protection, a foil, or a conveyor belt, a consumer article, sports article, such as shoe outsole, midsole, ski boot, an article for automotive applications, a cushioning element or dampening element, a roller, railway pad, animal eartag, sports article seal and gasket, an article for automotive IM applications such as a top mount, or engine mount, an extruded profile, such as for conveyor belts, elevator belts, dragchain and timing belts, a tube or hose, such as in drinking water pipes.

[0084] The present invention is further illustrated by the following set of embodiments and combinations of embodiments resulting from the dependencies and back-references as indicated. In particular, it is noted that in each instance where a range of embodiments is mentioned, for example in the context of a term such as "The process of any one of embodiments 1 to 4", every embodiment in this range is meant to be explicitly disclosed for the skilled person, i.e. the wording of this term is to be understood by the skilled person as being synonymous to "The process of any one of embodiments 1, 2, 3 and 4". Further, it is explicitly noted that the following set of embodiments represents a suitably structured part of the general description directed to preferred aspects of the present invention, and, thus, suitably supports, but does not represent the claims of the present invention.

[0085] 1. A polyurethane composition, obtained by a process comprising reacting at least the following components:

[0086] (a) a polyisocyanate composition (IC), and

[0087] (b) a polyol composition (PC),

[0088] wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid.

[0089] 2. The polyurethane composition according to embodiment 1, wherein the value of the tan d measured in a temperature range of from 60 to 100° does not increase with a rate of more than 0.1 per 5°C determined using Dynamical Mechanical Analysis (DMA) measured according to DIN EN ISO 6721-1:2011-08 of specimens yielded from samples, which were annealed 16 h / 80 to 100 °C and the measurement carried out in torsion mode with a heating rate of 2 °C / min and a frequency of 1 Hz.240204W001

[0090] - 12 - 3. The polyurethane composition according to embodiment 1 or 2, wherein the polyurethane is selected from the group consisting of thermoplastic polyurethanes and cast elastomers.

[0091] 4. The polyurethane composition according to any one of embodiments 1 to 3, wherein the polyol composition comprises a chain extender,

[0092] 5. The polyurethane composition according to any one of embodiments 1 to 4, wherein polyester polyol (P1) is selected from polyester polyols based on an acid selected from the group consisting of azelaic acid and se- bacic acid.

[0093] 6. The polyurethane composition according to any one of embodiments 1 to 5, wherein the polyol (P1) has a molecular weight Mn in the range of from 1000 to 3000 g / mol.

[0094] 7. The polyurethane composition according to any one of embodiments 1 to 6, wherein the polyisocyanate composition comprises a polyisocyanate selected from the group consisting of 2,2'-, 2, 4'- and 4, 4'-diphenyl methane diisocyanate (MDI), prepolymers of diphenylmethane diisocyanate, pentanediisocyanate, hexamethylene 1 ,6-diisocyanate (HDI), 1 ,4-phenylene diisocyanate, 1 ,5-naphthylene diisocyanate (NDI).

[0095] 8. The polyurethane composition according to any one of embodiments 1 to 7, wherein the polyol is non-fossil based.

[0096] 9. Process for preparing a polyurethane composition, comprising

[0097] (i) providing a polyisocyanate composition (IC) and a polyol composition (PC);

[0098] (ii) reacting the polyisocyanate composition (IC) and the polyol composition (PC);

[0099] wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid.

[0100] 10. A polyurethane composition obtained or obtainable according to a process according embodiment 9.

[0101] 11. Use of a polyurethane composition according to any one of embodiments 1 to 8 or a polyurethane composition obtained or obtainable according to the process according to embodiment 9 for preparing articles for dynamic applications, in particular sports applications, rollers or wheels.

[0102] 12. Use of a polyurethane composition for preparing articles for dynamic applications, in particular sports applications, rollers or wheels, wherein the polyurethane composition, obtained by a process comprising reacting at least the following components:

[0103] (a) a polyisocyanate composition (IC), and

[0104] (b) a polyol composition (PC),240204W001

[0105] - 13 - wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid.

[0106] 13. The use according to embodiment 12, wherein the value of the tan d measured in a temperature range of from 60 to 100° does not increase with a rate of more than 0.1 per 5°C determined using Dynamical Mechanical Analysis (DMA) measured according to DIN EN ISO 6721-1:2011-08 of specimens yielded from samples, which were annealed 16 h / 80 to 100 °C and the measurement carried out in torsion mode with a heating rate of 2 °C / min and a frequency of 1 Hz.

[0107] 14. The use according to embodiment 12 or 13, wherein the polyurethane is selected from the group consisting of thermoplastic polyurethanes and cast elastomers.

[0108] 15. The use according to any one of embodiments 12 to 14, wherein the polyol composition comprises a chain extender,

[0109] 16. The use according to any one of embodiments 12 to 15, wherein polyester polyol (P1) is selected from polyester polyols based on an acid selected from the group consisting of azelaic acid and sebacic acid.

[0110] 17. The use according to any one of embodiments 12 to 16, wherein the polyol (P1) has a molecular weight Mn in the range of from 1000 to 3000 g / mol.

[0111] 18. The use according to any one of embodiments 12 to 17, wherein the polyisocyanate composition comprises a polyisocyanate selected from the group consisting of 2,2'-, 2, 4'- and 4,4'-diphenylmethane diisocyanate (MDI), prepolymers of diphenylmethane diisocyanate, pentanediisocyanate, hexamethylene 1 ,6-diisocyanate (HDI), 1 ,4-phenylene diisocyanate, 1 ,5-naphthylene diisocyanate (NDI).

[0112] 19. The use according to any one of embodiments 12 to 18, wherein the polyol is non-fossil based.

[0113] 20. A molded body comprising a polyurethane composition according to any one of embodiments 1 to 8 or a polyurethane composition obtained or obtainable according to the process according to embodiment 9.

[0114] 21. A molded body comprising a polyurethane composition obtained by a process comprising reacting at least the following components:

[0115] (a) a polyisocyanate composition (IC), and

[0116] (b) a polyol composition (PC),

[0117] wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid.240204W001

[0118] - 14- 22. The molded body according to embodiment 21 , wherein the value of the tan d measured in a temperature range of from 60 to 100° does not increase with a rate of more than 0.1 per5°C determined using Dynamical Mechanical Analysis (DMA) measured according to DIN EN ISO 6721-1:2011-08 of specimens yielded from samples, which were annealed 16 h / 80 to 100 °C and the measurement carried out in torsion mode with a heating rate of 2 °C / min and a frequency of 1 Hz.

[0119] 23. The molded body according to embodiment 21 or 22, wherein the polyurethane is selected from the group consisting of thermoplastic polyurethanes and cast elastomers.

[0120] 24. The molded body according to any one of embodiments 21 to 23, wherein the polyol composition comprises a chain extender,

[0121] 25. The molded body according to any one of embodiments 21 to 24, wherein polyester polyol (P1) is selected from polyester polyols based on an acid selected from the group consisting of azelaic acid and sebacic acid.

[0122] 26. The molded body according to any one of embodiments 21 to 25, wherein the polyol (P1) has a molecular weight Mn in the range of from 1000 to 3000 g / mol.

[0123] 27. The molded body according to any one of embodiments 21 to 26, wherein the polyisocyanate composition comprises a polyisocyanate selected from the group consisting of 2,2'-, 2, 4'- and 4,4'-diphenylmethane diisocyanate (MDI), prepolymers of diphenylmethane diisocyanate, pentanediisocyanate, hexamethylene 1 ,6-diiso- cyanate (HDI), 1 ,4-phenylene diisocyanate, 1,5-naphthylene diisocyanate (NDI).

[0124] 28. The molded body according to any one of embodiments 21 to 27, wherein the polyol is non-fossil based.

[0125] 29. The molded body according to embodiment 20, wherein the molded body is a role or a wheel, a film, such as for ski films, roofliners, wound dressing breathable films, films for surface protection, a foil, or a conveyor belt, a consumer article, sports article, such as shoe outsole, midsole, ski boot, an article for automotive applications, a cushioning element or dampening element, a roller, railway pad, animal eartag, sports article seal and gasket, an article for automotive IM applications such as a top mount, or engine mount, an extruded profile, such as for conveyor belts, elevator belts, dragchain and timing belts, a tube or hose, such as in drinking water pipes.

[0126] 30. The molded body according to any one of embodiments 21 to 28, wherein the molded body is a role or a wheel, a film, such as for ski films, roofliners, wound dressing breathable films, films for surface protection, a foil, or a conveyor belt, a consumer article, sports article, such as shoe outsole, midsole, ski boot, an article for automotive applications, a cushioning element or dampening element, a roller, railway pad, animal eartag, sports article seal and gasket, an article for automotive IM applications such as a top mount, or engine240204W001

[0127] - 15- mount, an extruded profile, such as for conveyor belts, elevator belts, dragchain and timing belts, a tube or hose, such as in drinking water pipes.

[0128] 31. A polyurethane composition, obtained by a process comprising reacting at least the following components:

[0129] (a) a polyisocyanate composition (IC), and

[0130] (b) a polyol composition (PC),

[0131] wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid,

[0132] wherein the value of the tan d measured in a temperature range of from 60 to 100° does not increase with a rate of more than 0.1 per 5°C determined using Dynamical Mechanical Analysis (DMA) measured according to DIN EN ISO 6721-1:2011-08 of specimens yielded from samples, which were annealed 16 h / 80 to 100 °C and the measurement carried out in torsion mode with a heating rate of 2 °C / min and a frequency of 1 Hz.

[0133] 32. The polyurethane composition according to embodiment 31 , wherein the value of the tan d measured in a temperature range of from 60 to 100° does not increase with a rate of more than 0.01 per 5°C determined using Dynamical Mechanical Analysis (DMA) measured according to DIN EN ISO 6721-1:2011-08 of specimens yielded from samples, which were annealed 16 h / 80 to 100 °C and the measurement carried out in torsion mode with a heating rate of 2 °C / min and a frequency of 1 Hz.

[0134] 33. The polyurethane composition according to embodiment 31 or 32, wherein the polyurethane is selected from the group consisting of thermoplastic polyurethanes and cast elastomers.

[0135] 34. The polyurethane composition according to any one of embodiments 31 to 33, wherein the polyol composition comprises a chain extender,

[0136] 35. The polyurethane composition according to any one of embodiments 31 to 34, wherein polyester polyol (P1) is selected from polyester polyols based on an acid selected from the group consisting of azelaic acid and sebacic acid.

[0137] 36. The polyurethane composition according to any one of embodiments 31 to 35, wherein the polyol (P1) has a molecular weight Mn in the range of from 1000 to 3000 g / mol.

[0138] 37. The polyurethane composition according to any one of embodiments 31 to 36, wherein the polyisocyanate composition comprises a polyisocyanate selected from the group consisting of 2,2'-, 2, 4'- and 4, 4'-dipheny I- methane diisocyanate (MDI), prepolymers of diphenylmethane diisocyanate, pentanediisocyanate, hexamethylene 1 ,6-diisocyanate (HDI), 1 ,4-phenylene diisocyanate, 1 ,5-naphthylene diisocyanate (NDI).240204W001

[0139] - 16 - 38. The polyurethane composition according to any one of embodiments 31 to 37, wherein the polyol is non-fossil based.

[0140] 39. Process for preparing a polyurethane composition, comprising

[0141] (i) providing a polyisocyanate composition (IC) and a polyol composition (PC);

[0142] (ii) reacting the polyisocyanate composition (IC) and the polyol composition (PC);

[0143] wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid.

[0144] 40. Use of a polyurethane composition according to any one of embodiments 31 to 38 or a polyurethane composition obtained or obtainable according to the process according to embodiment 39 for preparing articles for dynamic applications, in particular sports applications, rollers or wheels.

[0145] 41. A molded body comprising a polyurethane composition according to any one of embodiments 31 to 38 or a polyurethane composition obtained or obtainable according to the process according to embodiment 39.

[0146] 42. The molded body according to embodiment 41 , wherein the molded body is a role or a wheel, a film, such as for ski films, roofliners, wound dressing breathable films, films for surface protection, a foil, or a conveyor belt, a consumer article, sports article, such as shoe outsole, midsole, ski boot, an article for automotive applications, a cushioning element or dampening element, a roller, railway pad, animal eartag, sports article seal and gasket, an article for automotive IM applications such as a top mount, or engine mount, an extruded profile, such as for conveyor belts, elevator belts, dragchain and timing belts, a tube or hose, such as in drinking water pipes.

[0147] The present invention is further illustrated by the following examples.

[0148] Examples

[0149] Experimental details:

[0150] Reference 1 and Example 1 - 3 were produced by casting. All chemicals were heated up to 60°C. The A component was prepared by mixing the polyol, chain extender and catalyst in a speed mixer for 10 min under vacuum. The A and B component were set to 60°C and mixed under vacuum in a speed mixer at 1600 rpm for 45 min before the material was used for casting application in a mould. After casting, the material was cured and annealed for 16h at 80°C before use.240204W001

[0151] - 17- Polyol 1 2.0 functional, 55 mgKOH / g OH number based on adipic acid and 1,3-propane diol

[0152] Polyol 2 2.0 functional, 55.5 mgKOH / g OH number based on sebacic acid and 1,3-propane diol

[0153] Polyol 3 2.0 functional, 54.8 mgKOH / g OH number based on sebacic acid and 1,3-propane diol

[0154] Polyol 4 2.0 functional, 55 mgKOH / g OH number based on azelaic acid and 1,3-propane diol

[0155] Polyol 5 2.0 functional, 56.7 mgKOH / g OH number based on decanedioic acid and 1,3-propane diol

[0156] Polyol 6 2.0 functional, 54.1 mgKOH / g OH number based on decanedioic acid and 1,4-butane diol

[0157] Polyol 7 2.0 functional, 56.5 mgKOH / g OH number based on decanedioic acid and 1,3-propane diol and 1,4- butane diol (4:1)Polyol 8 2.0 functional, 56 mgKOH / g OH number based on adipic acid and 1,4-butane diol

[0158] Polyol 9 2.0 functional, 45.5 mgKOH / g OH number based on adipic acid and 1,4-butane diol

[0159] Chain extender 1 1 ,4-butane diol

[0160] Additive 1 Fatty acid derivate

[0161] Additive 2 Hydrolysis stabilizer: Carbodiimid

[0162] Catalyst 1 tertiary amine catalyst

[0163] Prepolymer 1 isocyanate prepolymer with 22.9% NCO content, MDI based

[0164] Isocyanate 4,4'-Diphenylmethan-diisocyanate

[0165] Table 1. Example cast elastomers and DMA results.

[0166]

[0167] 240204W001

[0168] - 18 -

[0169]

[0170] The examples as mentioned in Table 2 were mixed at 80°C and stirred. The resultant mixture was heated through the exothermic reaction to 110°C. The obtained mixture was purred onto a Teflon coated mold to obtain a hand casted slab, which is annealed for 15 h at 80°C and subsequently granulated.

[0171] The granulates were dried at 110° C for 3 h and then injection molded to test plaques of size 2 mmx9 cmx12 cm .After injection molding the injection molded plates were tempered for 20 h at 100°C for mechanical testing and DMA analysis. S2 test bars (according to DIN 53504) were stamped out of them and subjected to mechanical tests. The maximum temperature of the melt during test specimen production was 240° C.

[0172] Table 2. Example thermoplastic polyurethanes and DMA results

[0173]

[0174] 240204W001

[0175] - 19 - The compounds as mentioned in Table 2 were mixed at 80°C and stirred. The resultant mixture was heated through the exothermic reaction to 110°C. The obtained mixture was purred onto a Teflon coated mold to obtain a hand casted slab, which is annealed for 15 h at 80°C and subsequently granulated.

[0176] The granulates were dried at 110° C for 3 h and then injection molded to test plaques of size 2 mmx9 cmx12 cm .After injection molding the injection molded plates were tempered for 20 h at 100°C for mechanical testing and DMA analysis. S2 test bars (according to DIN 53504) were stamped out of them and subjected to mechanical tests. The maximum temperature of the melt during test specimen production was 240° C.

[0177] Table 3 hereinbelow summarizes the properties measured via DMA and a heating rate of 2K / min at 1 Hz under torsion based on DIN EN ISO 6721 : 2016. The measurements are conducted on samples with a width-to-thickness ratio of 1:6.

[0178] Table 3. Mechanical data of TPUs.

[0179]

[0180] Values in Table 3 were measured according to the following methods:

[0181] Shore Hardness: DIN ISO 48-4:2021-02 (average value; indentation of 3s)

[0182] Tensile strength: DIN 53504:2017-03, test specimen S2, testing speed 200mm / min

[0183] Elongation at break: DIN 53504:2017-03, test specimen S2, testing speed 200mm / min

[0184] Tear Resistance: DIN ISO 34-1, B (b): 2016 measured with incision

[0185] Abrasion: DIN ISO 4649:2021-06, procedure A, standard reference Elastomer No.1

[0186] Literature cited:

[0187] WO 2011 / 083000 A1

[0188] WO 2012 / 173911 A1

[0189] WO 2010 / 031792 A1

[0190] US-A-5695884

[0191] US 2006 / 0141883 A1240204W001

[0192] - 20 - US 2006 / 0121812

[0193] US 2007 / 0161731 A1

[0194] US 6395833 B1

[0195] US 20100266799 A

[0196] Plastics Additive Handbook, 5th Edition, H. Zweifel, ed., Hanser Publishers, Munich, 2001, p.98-p.136, and pp. 443 ft

[0197] EP-A308683

[0198] EP-A670339

[0199] JP-A5163431

[0200] DE-A 19607870

[0201] DE A 19649290

[0202] DE 102006009096 A1

[0203] DE A 19706452

[0204] EP-A-1826225

Claims

240204W001-21 - Claims1. A polyurethane composition, obtained by a process comprising reacting at least the following components:(a) a polyisocyanate composition (IC), and(b) a polyol composition (PC),wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid,wherein the value of the tan d measured in a temperature range of from 60 to 100° does not increase with a rate of more than 0.1 per 5°C determined using Dynamical Mechanical Analysis (DMA) measured according to DIN EN ISO 6721-1:2011-08 of specimens yielded from samples, which were annealed 16 h / 80 to 100 °C and the measurement carried out in torsion mode with a heating rate of 2 °C / min and a frequency of 1 Hz.

2. The polyurethane composition according to claim 1, wherein the value of the tan d measured in a temperature range of from 60 to 100° does not increase with a rate of more than 0.01 per 5°C determined using Dynamical Mechanical Analysis (DMA) measured according to DIN EN ISO 6721-1:2011-08 of specimens yielded from samples, which were annealed 16 h / 80 to 100 °C and the measurement carried out in torsion mode with a heating rate of 2 °C / min and a frequency of 1 Hz.

3. The polyurethane composition according to claim 1 or 2, wherein the polyurethane is selected from the group consisting of thermoplastic polyurethanes and cast elastomers.

4. The polyurethane composition according to any one of claims 1 to 3, wherein the polyol composition comprises a chain extender,5. The polyurethane composition according to any one of claims 1 to 4, wherein polyester polyol (P1) is selected from polyester polyols based on an acid selected from the group consisting of azelaic acid and sebacic acid.

6. The polyurethane composition according to any one of claims 1 to 5, wherein the polyol (P1) has a molecular weight Mn in the range of from 1000 to 3000 g / mol.

7. The polyurethane composition according to any one of claims 1 to 6, wherein the polyisocyanate composition comprises a polyisocyanate selected from the group consisting of 2,2'-, 2, 4'- and 4,4'-dipheny Imethane diisocyanate (MDI), prepolymers of diphenylmethane diisocyanate, pentanediisocyanate, hexamethylene 1,6-diiso- cyanate (HDI), 1 ,4-phenylene diisocyanate, 1 ,5-naphthylene diisocyanate (NDI).

8. The polyurethane composition according to any one of claims 1 to 7, wherein the polyol is non-fossil based.240204W001-22 - 9. Process for preparing a polyurethane composition, comprising(i) providing a polyisocyanate composition (IC) and a polyol composition (PC);(ii) reacting the polyisocyanate composition (IC) and the polyol composition (PC);wherein the polyol composition comprises a polyester polyol (P1) based on an acid selected from the group consisting of azelaic acid, sebacic acid, and dodecanoic acid.

10. Use of a polyurethane composition according to any one of claims 1 to 8 or a polyurethane composition obtained or obtainable according to the process according to claim 9 for preparing articles for dynamic applications, in particular sports applications, rollers or wheels.

11. A molded body comprising a polyurethane composition according to any one of claims 1 to 8 or a polyurethane composition obtained or obtainable according to the process according to claim 9.

12. The molded body according to claim 11, wherein the molded body is a role or a wheel, a film, such as for ski films, roofliners, wound dressing breathable films, films for surface protection, a foil, or a conveyor belt, a consumer article, sports article, such as shoe outsole, midsole, ski boot, an article for automotive applications, a cushioning element or dampening element, a roller, railway pad, animal eartag, sports article seal and gasket, an article for automotive IM applications such as a top mount, or engine mount, an extruded profile, such as for conveyor belts, elevator belts, dragchain and timing belts, a tube or hose, such as in drinking water pipes.

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