WO1999054405A1

WO1999054405A1 - The use of moulding materials with a thermoplastic polyketone and polyurethane base

Info

Publication number: WO1999054405A1
Application number: PCT/EP1999/002388
Authority: WO
Inventors: Hans-Jürgen DIETRICH; Karsten-Josef Idel; Wolfgang Kaufhold; Matthias Müller; Hans-Georg Wussow
Original assignee: Bayer Aktiengesellschaft
Priority date: 1998-04-21
Filing date: 1999-04-08
Publication date: 1999-10-28
Also published as: DE19817809A1

Abstract

The invention relates to the use of moulding materials consisting of at least one thermoplastic polyketone and at least one thermoplastic polyurethane for improving tenacity at low temperatures.

Description

Use of molding compounds based on thermoplastic polyketones and polyurethanes

The invention relates to the use of thermoplastic molding compositions based on thermoplastic polyketones (olefin-carbon monoxide copolymers) and polyurethanes to improve the low-temperature toughness.

The production of molding compositions from thermoplastic polyketones and polyurethane is known (US-A 4,851,482 (= EP-A 339 747)). It is described that the molding compositions have good toughness and rigidity as well as solvent resistance and abrasion resistance. Low-temperature toughness is not mentioned.

US Pat. No. 4,935,304 discloses wire and cable sheathing made from a mixture of thermoplastic polyketones and polyurethanes, which among other things have good toughness. Low-temperature toughness is also not mentioned.

US-A 5,166,252 discloses reinforced blends of thermoplastic polyketones and polyurethanes with a combination of properties including: Heat resistance,

Impact resistance, improved rigidity. The toughness behavior at low temperatures is not mentioned here either.

It has now been found that thermoplastic molding compositions made from polyketones and polyurethanes can be used to improve the low-temperature toughness and / or the toughness behavior at low temperatures. The molding compounds show excellent low-temperature toughness and excellent low-temperature toughness behavior under impact and impact stress. - 2 -

Polyketone / TPU blends are therefore particularly suitable for applications in which an excellent level of toughness is required at low temperatures, such as in the automotive and electrical / electronics sectors.

The present invention therefore relates to the use of molding compositions containing

A) thermoplastic polyketone and

B) thermoplastic polyurethane

for low temperature toughness.

The invention relates in particular to the use of thermoplastic molding compositions made from A) thermoplastic polyketone and B) thermoplastic polyurethane for the production of articles with improved low-temperature toughness.

The thermoplastic molding compositions generally contain component A) in amounts of 99 to 1, preferably 95 to 5, particularly preferably 80 to 50 parts by weight and component B in amounts of 1 to 99, preferably 5 to

95, particularly preferably 20 to 50 parts by weight. The sum of the parts by weight of A) and B) is 100. The molding compositions can contain further additives, as described later.

The polyketone polymers which are used as component A have a linear alternating structure and essentially contain 1 molecule of carbon monoxide per molecule of unsaturated hydrocarbon. Suitable ethylenically unsaturated hydrocarbons as monomers for the construction of the polyketone polymer have up to 20 carbon atoms, preferably up to 10 carbon atoms and are aliphatic such as ethylene and other α-olefins, e.g. Propylene, 1-

Butene, 1-isobutylene, 1-hexene, 1-octene and 1-dodecene, or are arylaliphatic and - 3 -

contain an aryl substituent on a carbon atom of the linear chain. Examples of arylaliphatic monomers are styrene, α-methylstyrene, p-ethylstyrene and m-isopropylstyrene.

Preferred polyketone polymers are copolymers of carbon monoxide and ethylene or terpolymers of carbon monoxide, ethylene and a second ethylenically unsaturated hydrocarbon with at least 3 carbon atoms, in particular an α-olefin such as e.g. Propylene.

Terpolymers of at least 2 monomer units are particularly preferred, one of which is ethylene and the other a second hydrocarbon. About 10 to 100 monomer units of the second hydrocarbon are preferably used.

The polymer chain of the preferred polyketone polymer is as follows

Formula shown

[C0 (CH ₂ CH ₂ )] [C0 (G)] (I)

in which

G is a monomer unit based on an ethylenically unsaturated hydrocarbon with at least 3 carbon atoms, preferably 3 to 10 carbon atoms, which is polymerized on account of the ethylenic double bond and

the ratio y: x is not more than about 0.5.

y = 0 for copolymers of carbon monoxide and ethylene. If y is different from 0, terpolymers are used and the units -CO- (CH ₂ CH ₂ ) - and -CO- (G) -unit are statistically distributed over the polymer chain.

The preferred ratio of y: x is 0.01 to 0.1.

Polyketone polymers with an average molecular weight (number average) of approximately 1,000 to 200,000, in particular 20,000 to 90,000, determined by gel permeation chromatography, are preferred.

For further characterization and for the production of the polyketone polymers, reference is made to US Pat. No. 5,166,252.

A polyketone polymer or a mixture of polyketone polymers can be used.

The polyketone polymers can also contain stabilizers, processing aids, flow aids, antistatic agents, flame retardants, dyes, amount of pig, reinforcing materials such as e.g. Contain glass fibers or mineral fillers or other common additives.

The thermoplastic polyurethanes used as component B are made up of linear polyols, mostly polyester or polyether polyols, organic diisocyanates and short-chain diols (chain extenders). To accelerate the formation reaction, additional catalysts can be added. The molar ratios of the structural components can be varied over a wide range, whereby the properties of the product can be adjusted. Molar ratios of polyols to chain extenders from 1: 1 to 1:12 have proven successful. This results in products in the range from 70 Shore A to 75 Shore D. The build-up of the thermoplastically processable polyurethane elastomers can take place either step by step (prepolymer process) or by the simultaneous reaction of all components in one step (one-shot process). In the prepolymer process - 5 -

Polyol and the diisocyanate an isocyanate-containing prepolymer is formed, which is reacted with the chain extender in a second step. The TPU can be manufactured continuously or discontinuously. The best known technical manufacturing processes are the belt process and the extruder process.

The thermoplastically processable polyurethanes are obtainable by implementing the polyurethane-forming components

C) organic diisocyanate, D) linear hydroxyl-terminated polyol with a molecular weight of 500 to

5000, E) Diol or diamine chain extenders with a molecular weight of 60 to

500,

wherein the molar ratio of the NCO groups in C) to the isocyanate-reactive groups in D) and E) is 0.9 to 1.2.

Examples of suitable organic diisocyanates C) are aliphatic, cycloaliphatic, araliphatic, heterocyclic and aromatic diisocyanates as described in Justus Liebigs Annalen der Chemie, 562, pp. 75-136.

Examples include: aliphatic diisocyanates such as hexamethylene diisocyanate, cycloaliphatic diisocyanates such as isophorone diisocyanate, 1,4-cyclohexane diisocyanate, l-methyl-2,4-cyclohexane diisocyanate and l-methyl-2,6- cyclohexane diisocyanate and the corresponding isomer mixtures, 4,4'-dicyclohexyl methane diisocyanate, 2,4'-dicyclohexyl methane diisocyanate and 2,2'-dicyclohexyl methane diisocyanate and the corresponding isomer mixtures, aromatic diisocyanates such as 2 , 4-tolylene diisocyanate, mixtures of 2,4-tolylene diisocyanate and 2,6-tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate and 2,2'-diphenylmethane diisocyanate, mixtures of 2,4'-diphenylmethane diisocyanate - cyanate and 4,4'-diphenylmethane diisocyanate, urethane-modified liquid 4,4'-di- - 6 -

phenylmethane diisocyanates and 2,4'-diphenylmethane diisocyanates, 4,4'-diisocyanatodiphenylethane (1,2) and 1,5-naphthylene diisocyanate. 1,6-hexamethylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, diphenylmethane diisocyanate isomer mixtures with a 4,4'-diphenylmethane diisocyanate content of> 96% by weight and in particular 4,4'-diphenylmethane diisocyanate and

1,5-naphthylene diisocyanate. The diisocyanates mentioned can be used individually or in the form of mixtures with one another. They can also be used together with up to 15% by weight (based on the total amount of diisocyanate) of a polyisocyanate, for example triphenylmethane 4,4 ', 4 "triisocyanate or polyphenyl polymethylene polyisocyanates.

Linear hydroxyl-terminated polyols with a molecular weight of 500 to 5000 are used as component D). Due to production, these often contain small amounts of non-linear compounds. One therefore often speaks of "essentially linear polyols". Polyester, polyether, polycarbonate are preferred

Diols or mixtures of these.

Suitable polyether diols can be prepared by reacting one or more alkylene oxides with 2 to 4 carbon atoms in the alkylene radical with a starter molecule which contains two active hydrogen atoms bonded. As

Alkylene oxides are e.g. called: ethylene oxide, 1, 2-propylene oxide, epichlorohydrin and 1,2-butylene oxide and 2,3-butylene oxide. Ethylene oxide, propylene oxide and mixtures of 1,2-propylene oxide and ethylene oxide are preferably used. The alkylene oxides can be used individually, alternately in succession or as mixtures. Examples of suitable starter molecules are: water, amino alcohols, such as N-alkyl-diethanolamines, for example N-methyl-diethanolamine, and diols, such as ethylene glycol, 1,3-propylene glycol, 1,4-butanediol and 1,6 -Hexanediol. If appropriate, mixtures of starter molecules can also be used. Suitable polyether diols are also the hydroxyl-containing polymerization products of tetrahydrofuran. Trifunctional polyethers can also be used

Proportions of 0 to 30 wt .-%, based on the bifunctional polyethers used - 7 -

be, but at most in such an amount that a thermoplastically processable product is formed. The essentially linear polyether diols have molecular weights of 500 to 5000. They can be used both individually and in the form of mixtures with one another.

Suitable polyester diols can be prepared, for example, from dicarboxylic acids having 2 to 12 carbon atoms, preferably 4 to 6 carbon atoms, and polyhydric alcohols. Examples of suitable dicarboxylic acids are: aliphatic dicarboxylic acids, such as succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid and sebacic acid, and aromatic dicarboxylic acids, such as phthalic acid,

Isophthalic acid and terephthalic acid. The dicarboxylic acids can be used individually or as mixtures, e.g. in the form of a mixture of succinic, glutaric and adipic acids. For the preparation of the polyester diols it may be advantageous to replace the dicarboxylic acids with the corresponding dicarboxylic acid derivatives, such as carboxylic acid diesters with 1 to 4 carbon atoms in the alcohol radical, carboxylic acid anhydrides or

To use carboxylic acid chlorides. Examples of polyhydric alcohols are glycols having 2 to 10, preferably 2 to 6, carbon atoms, such as ethylene glycol, diethylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,10-decanediol, 2,2- Dimethyl-l, 3-propanediol, 1,3-propanediol and dipropylene glycol. Depending on the desired properties, the polyhydric alcohols can be used alone or, if appropriate, as a mixture with one another. Also suitable are esters of carbonic acid with the diols mentioned, in particular those with 4 to 6 carbon atoms, such as 1,4-butanediol or 1,6-hexanediol, condensation products of hydroxycarboxylic acids, for example hydroxycaproic acid, and polymerization products of lactones, for example optionally substituted caprolactones.

Preferred polyester diols are ethanediol polyadipates, 1,4-butanediol polyadipates, ethanediol-1,4-butanediol polyadipates, 1,6-hexanediol-neopentyl-glycol polyadipates, 1,6-hexanediol-1,4 -butanediol-polyadipate and poly-caprolactone. The polyester diols have molecular weights of 500 to 5000 and can be used individually or in the form of mixtures with one another. - 8th -

Chain extenders E) used are diols or diamines with a molecular weight of 60 to 500, preferably aliphatic diols with 2 to 14 carbon atoms, such as e.g. Ethanediol, 1,6-hexanediol, diethylene glycol, dipropylene glycol and in particular 1,4-butanediol. However, diesters of terephthalic acid with glycols having 2 to 4 carbon atoms, such as e.g.

Terephthalic acid-bis-ethylene glycol or terephthalic acid-bis-l, 4-butanediol, hydroxyalkylene ether of hydroquinone, such as e.g. 1,4-di (-hydroxyethyl) hydroquinone, ethoxylated bisphenols, (cyclo) aliphatic diamines, such as e.g. Isophoronediamine, ethylenediamine, 1,2-propylene-diamine, 1,3-propylene-diamine, N-methyl-propylene-1,3-diamine, N, N'-dimethyl-ethylenediamine and aromatic diamines such as e.g. 2,4-tolylene diamine and 2,6-tolylene diamine, 3,5-diethyl-2,4-tolylene diamine and 3,5-diethyl-2,6-toluylene diamine and primary mono-, di-, tri- or tetraalkyl-substituted 4,4'-diaminodiphenylmethane. Mixtures of the chain extenders mentioned above can also be used. Smaller amounts of triplets can also be added.

Conventional monofunctional compounds can also be used in small amounts, e.g. as a chain terminator or mold release. Examples include alcohols such as octanol and stearyl alcohol or amines such as butylamine and stearylamine.

To produce the thermoplastic polyurethanes, the structural components, if appropriate in the presence of catalysts, auxiliaries and additives, can be reacted in amounts such that the equivalence ratio of NCO groups to the sum of the NCO-reactive groups, in particular the OH groups of the low molecular weight diols / Triols and polyols 0.9: 1.0 to 1.2: 1.0, preferably 0.95: 1.0 to 1.10: 1.0.

Suitable catalysts according to the invention are the conventional tertiary amines known in the art, such as triethylamine, dimethylcyclohexylamine, N-methylmorpholine, N, N'-dimethylpiperazine, 2- (dimethylaminoethoxy) ethanol, diazabicyclo- ( 2,2,2) octane and the like, and in particular organic ones - 9 -

Metal compounds such as titanium acid esters, iron compounds, tin compounds, e.g. Tin diacetate, tin dioctoate, tin dilaurate or the tin dialkyl salts of aliphatic carboxylic acids such as dibutyl tin diacetate, dibutyl tin dilaurate or the like. Preferred catalysts are organic metal compounds, in particular titanium acid esters, iron or tin compounds.

In addition to the TPU components and the catalysts, other auxiliaries and additives can also be added. Examples include lubricants such as fatty acid esters, their metal soaps, fatty acid amides and silicone compounds, antiblocking agents, inhibitors, stabilizers against hydrolysis, light, heat and discoloration,

Flame retardants, dyes, pigments, inorganic or organic fillers and reinforcing agents. Reinforcing agents are in particular fibrous reinforcing materials, such as inorganic fibers, which are produced according to the prior art and can also be supplied with a size. More detailed information on the auxiliaries and additives mentioned can be found in the specialist literature, for example

J.H. Saunders, K.C. Fresh: "High Polymers", Volume XVI, Polyurethane, Parts 1 and 2, Interscience Publishers 1962 and 1964, R.Gächter, H.Müller (Ed.): Taschenbuch der Kunststoff-Additive, 3rd edition, Hanser Verlag, Munich 1989, or DE-A 29 01 774.

It can be a thermoplastic polyurethane or a mixture of thermoplastic

Polyurethanes are used.

Other additives that can be incorporated into the TPU are stabilizers, processing aids, antistatic agents, flame retardants, dyes, pigments, commercially available plasticizers such as phosphates, phthalates, adipates, sebacates and alkyl sulfonic acid esters, reinforcing materials such as e.g. Glass fibers or mineral fillers and other common additives.

The TPU can be manufactured continuously in the so-called extruder process, for example in a multi-screw extruder. The dosage of the TPU components C), D) and E) can be carried out simultaneously, ie in a one-shot process, or in succession, ie after - 10 -

a prepolymer process. The prepolymer can either be introduced batchwise or else be produced continuously in part of the extruder or in a separate upstream prepolymer unit.

The thermoplastic molding compositions optionally containing other known ones

Additives such as stabilizers, dyes, pigments, lubricants and mold release agents, reinforcing materials, nucleating agents and antistatic agents are produced by mixing the respective constituents in a known manner and at temperatures of 200 ° C. to 330 ° C. in conventional units such as internal kneaders, extruders, Double-shaft screws melt-compounded or melt-extruded. In which

Melt compounding or melt extrusion step can be further additives such as Add reinforcing materials (e.g. glass fibers, mineral fillers), stabilizers, dyes, pigments, lubricants and mold release agents, nucleating agents, compatalizers and other additives.

The article can be produced, for example, by separately feeding a granulate, which was previously obtained by compounding polyketone and TPU, optionally with further additives, or the respective granules of components A and B, optionally with further additives, into the compounding or extrusion system given and processed together.

The thermoplastic molding compounds made of polyketone and TPU are used to manufacture all kinds of articles. For example, molded bodies, hollow bodies and jackets may be mentioned.

Polyketone / TPU blend are particularly suitable for applications in which an excellent level of toughness is required at low temperatures, such as in the automotive, electrical and electronics sectors.

Examples of applications include: fuel lines and fuel storage tanks of all kinds, fuel rails, fuel pump reservoirs, power - 11 -

fabric pump housings, hubcaps, tank sockets, all types of snap locks, cable sheathing, hoses and pipes.

In addition to the good low-temperature toughness, polyketone / TPU blends are characterized in particular by excellent fuel barrier properties, low

Gas permeability, very good chemical resistance and very good paintability.

- 12 -

Examples

The following components are used in the examples:

A) Linear alternating Teφolymer from carbon monoxide, ethylene and propylene

(Carilon ^® DP P 1000, Shell International Chemicals Ltd., London, UK)

Thermoplastic polyurethanes:

Bl) Desmopan® 8600 polytetramethylene glycol

1,4-butanediol methylenediphenyl diisocyanate

B2) Desmopan® 955 U polytetramethylene glycol 1,4-butanediol

Methylene diphenyl diisocyanate

B3) Desmopan® 385 poly-butanediol-1,4-adipate

1,4-butanediol methylenediphenyl diisocyanate

B4) Texin® DP 7-3005 polytetramethylene glycol

1,4-butanediol Desmodur W® (methylene dicyclohexyl diisocyanate)

B5) Texin® SS 90 polytetramethylene glycol

Hexanediol-1,6 isophorone diamine isophorone diisocyanate - 13 -

The Desmopan products are from Bayer AG, Leverkusen, Germany, the Texin products from Bayer Coφoration, Pittsburgh, USA. Desmodur W® is a product of Bayer AG, Leverkusen, Germany.

The components are mixed in a ZSK 32/1 extruder at 230 to 250 ° C. The moldings are produced on an Arburg 320-210-500 injection molding machine at melt temperatures of 230 to 250 ° C and mold temperatures of 20 to 50 ° C. Composition and properties are shown in Tables 1 to 5.

The behavior in the case of impact stress in the impact bending test according to Izod on non-notched (Izod impact strength aj _c , ISO 180) and notched (Izod impact strength a _jA , ISO 180) test specimens and the behavior in the case of impact stress in the puncture test (penetration work _total 60) mm round discs with a thickness of 3 mm, ISO 6603-2) were examined.

In addition, the surface of the molded parts was assessed visually.

As can be seen from Tables 1 to 5, the molding compositions according to the invention lead to moldings with very good toughness values and very good toughness behavior, especially at low temperatures. The puncture test complements the impact bending test as a test with biaxial impact stress. In practice, biaxial impact stresses occur more frequently than pure impact bending or impact tensile stresses.

They also have surfaces just as good as the unmodified polyketone. Table 1

Desmopan 8600 [% by weight] - 5.0 10 20 30 40 o vβ

CarilonDPPlOOO 100 * 100 ** 95 90 80 70 60

Izod impact strength (ISO 180/1 A) RT [kJ / m ² ] 14.4 11.3 18.0 27.2 24.5 20.7 20.5 ©

Izod impact strength (ISO 180 / 1U) RT [kJ / m ² ] ngng - - - - -

0 ° C n.g. n.g. n.g. n.g. - - -

-10 ° C 8xn.g.2 x 182 s 210s 7 x n.g.2 x 232 s n.g. - -

-20 ° C 183 z 177 s 183 s 211 s n.g. n.g. n.g.

-30 ° C 149 s - - - 9xn.g.1 x221 s n.g- -

-40 ° C 134 s - - - 192 s 1 xn.g.9x210 s n.g.

-50 ° C 112s - - - - - 8 x n.g. 2 x 198 s

-60 ° C - - - - - - 146 s

Piercing work Wges RT [J] 124 z 125 z 129 z 128 z 129 z 118z 111 z

0 ° C 126 z - - - - - -

- 10 ° C - 77.8 z / s 84.4 z / s 105 z 138 z 124 z 122 z

-20 ° C 133 z 71.5 z / s 77.6 z / s 62.2 z / s 127 z / s 119 z / s 120 z / s

-30 ° C - 38.8 z / s - - - - -

-40 ° C 75.2 z / s - - - 149 z 142 z 140 z

-60 ° C - - - - 78.6 z / s 158 z / s 186 z / s

* Direct manufacture of the test specimen from polyketone granulate

** Production of the test specimen after carrying out an extrusion processing step as used for mixing with TPU = not broken; z = tough fracture pattern; s = brittle fracture pattern; z / s = tough-brittle fracture

"13

O

H

o> w

00 00

Table 2

Desmopan 955 U [% by weight] - 5.0 10 20 30 40 V ©

Carilon DP P 1000 100 * 100 ** 95 90 80 70 60

Izod impact strength (ISO 180 / 1A) RT [kJ / m ² ] 14.4 11.3 26.7 6 x 38.8 z 27.6 17.7 14.5 © in 4 x 30.5 s

Izod impact strength (ISO 180 / 1U) RT [kJ / m ² ] ngng - - - - -

0 ° C n.g. n.g. n.g. - - - -

- 10 ° C 8 x n.g. 2 x 182 s 210 s n.g. - - n.g. -

- 20 ° C 183 z 177 s 2 x n.g. 8 x 200 s n.s. n.g. 4 x n.g. 6 x 123 s 9 x n.g. 1 x 69.8 s

- 30 ° C 149 s - - 212 s 6 x n.g. 4 x 123 s n.s. n.g.

- 40 ° C 134 s - - 171 s 180 s - 120 s

- 50 ° C 112 s - - - - - -

Push through work Wges RT [J] 124 z 125 z 129 z 138 z 107 z 78.9 z / s 68.3 z / s o ° c 126 z - - - - 57.6 z s 59.2 z / s Π

- 10 ° C - 77.8 z / s 135 z 139 z 99.5 z / s - -

- 20 ° C 133 z 71.5 z / s 108 z / s 105 z / s 93.1 z / s 19.7 z / s 35.8 z / s

- 30 ° C - 38.8 z / s - - - - -

Direct production of the test specimen from polyketone granulate ** Production of the test specimen after carrying out an extrusion processing step as used for mixing with TPU = not broken; z = tough fracture pattern; s = brittle fracture pattern; z s = tough and brittle fracture

O

H

"T3 O v © o t.

00 00

Table 3 V ©

O

Desmopan 385 [% by weight] - 5.0 10 20 30 40 'Jl

CarilonDPPlOOO 100 * 100 ** 95 90 80 70 60

Izod impact strength (ISO 180 / 1A) RT [kJ / m ² ] 14.4 11.3 25.1 41.4 68.4 92.6 4 x 72.8 z6x 34.1s

Izod impact strength (ISO 180 / 1U) RT [kJ / m ² ] ngng - - - - -

0 ° C n.g. n.g. n.g. n.g. n.g. n.g. n.g.

-10 ° C 8xn.g.2x182 s 210 s n.g. n.g. n.g. n.g. n.g.

-20 ° C 183 z 177 s 168 s 2 x n.g. 8x 209 s n.g. n.g. n.g.

-30 ° C 149 s - 150 s 166 s 1 x n.g. 2 x 250 z n.g. 8xn.g.2x 167 s 7x216s I

-40 ° C 134 s - 102 s 131 s 156 s 3x240z7xl87s 4 x n.g. 6x 130

-50 ° C 112s - 111s 119s 135 s 132 s 134 s

Puncture work Wges RT [J] 124 z 125 z 105 z 125 z 109 z 105 z 106 z

0 ° C 126 z - 92.4 z 133 z 110z 105 z 110z

-10 ° C - 77.8 z / s 73.6 z / s 115z - - -

-20 ° C 133 z 71.5 z / s 54.6 zs 78.1 z / s 117z 112z 106 z

-30 ° C - 38.8 z / s - - - - -

-40 ° C 75.2 z / s - - - 98.1 z / s 121z 85.0 z / s

Direct production of the test specimen from polyketone granulate ** Production of the test specimen after performing an extrusion processing step as used for mixing with TPU or the like = not broken; z = tough fracture pattern; s = brittle fracture pattern; z / s = tough-brittle fracture H

W

00 00

Table 4

Carilon DP P 1000 100 * 100 ** 95 90 80 60

Izod impact strength (ISO 180 / 1A) RT [kJ / m ² ] 14.4 11.3 22.6 25.7 21.1 5.1 O in

Izod impact strength (ISO 180 / 1U) RT [kJ / m ² ] ngng - - - 7x ng 3 x 73.5 s

10 ° C - - - - - 9 x n.g. 1 x 47.9 s

0 ° C n.g. n.g. n.g. - - 52.1 s

- 10 ° C 8 x n.g. 2 x 182 s 210 s n.g. - - -

- 20 ° C 183 z 177 s 199 s 4 x n.g. 6 x 226 s n.s. 45.8 s

- 30 ° C 149 s - - 185 s 7 x n.g. 3 x 216 s -

- 40 ° C 134 s - - 69 s 133 s -

- 50 ° C 112 s - - - - -

Puncture work Wges RT [J] 124 z 125 z 142 z 146 z 111 z 14.9 s

0 ° C 126 z - - - 80.7 z / s 10.7 s

- 10 ° C - 77.8 z / s 105 z / s 101 z / s 43.5 z / s -

- 20 ° C 133 z 71.5 z / s 1 14 z / s 72.2 z / s 14.1 z / s 3.6 s

- 30 ° C - 38.8 z / s 53.2 z / s - - -

* Direct manufacture of the test specimen from polyketone granulate

** Production of the test specimen after performing an extrusion processing step as used for mixing with TPU = not broken; z = tough fracture pattern; s = brittle fracture pattern; z / s = tough-brittle fracture

n H

M

Ό

©

00 00

Table 5

CarilonDPPlOOO 100 * 100 ** 95 90 80 60

Izod impact strength (ISO 180 / 1A) RT [kJ / m ² ] 14.4 11.3 21.8 22.7 11.1 5.3 O

Izod impact strength (ISO 180 / 1U) RT [kJ / m ² ] ngng - - 2 x ng8 x 44.8 s 63.0 s

0 ° C n.g. n.g. n.g. n.g. 62.0 s 45.8 s

-10 ° C 8xn.g.2x 182 s 210s n.g. n.g. - -

-20 ° C 183 z 177 s 7xn.g.3x219 s 47.1 s 1 xn.g.9 x 212 s 39.1s

-30 ° C 149 s - 182 s - - -

-40 ° C 134 s - - - - -

-50 ° C 112s - - - - -

Puncture work Wges RT [J] 124 z 125 z 149 z 125 z / s 8.7 z / s 6.9 s

10 ° C - - - 89.2 z / s - -

0 ° C 126 z - - 67.5 z / s - - oo

-10 ° C - 77.8 z / s 138 z - - -

-20 ° C 133 z 71.5 z / s 70.1 z / s 20.9 z / s 3.4 s 2.2 s

-30 ° C - 38.8 z / s - - -

* Direct manufacture of the test specimen from polyketone granulate

n H

«V ©

©

OJ

00 00

Claims

- 19 patent claims

1. Use of molding compositions from at least one thermoplastic polyketone and at least one thermoplastic polyurethane for the production of moldings with improved low-temperature toughness.

2. Use according to claim 1, wherein the molding compositions contain 99 to 1 part by weight of thermoplastic polyketone A) and 1 to 99 parts by weight of thermoplastic polyurethane B).

3. Use according to claim 1, wherein the molding composition contains 95 to 5 parts by weight of A) and 5 to 95 parts by weight of B).

4. Use according to claim 1, wherein the molding composition contains 80 to 50 parts by weight of A) and 20 to 50 parts by weight of B).

5. Use according to claim 1, wherein the thermoplastic polyketone has a linear alternating structure.

6. Use according to claim 1, wherein the thermoplastic polyketone is composed of ethylenically unsaturated hydrocarbons having up to 20 carbon atoms, which are aliphatic or arylaliphatic.

7. Use according to claim 1, wherein the polyketones are represented by the following formula:

[CO (CH ₂ CH ₂ ) 1 [CO (G)] ^xy (I) where - 20 -

G is a monomer based on an ethylenically unsaturated

Hydrocarbon with at least 3 carbon atoms, which is polymerized due to the ethylenic double bond and that

Y: x ratio is not more than about 0.5, y = 0 for copolymers of carbon monoxide and ethylene.

8. Use according to claim 1, wherein the molding composition additives selected from at least one of the group of stabilizers, processing aids, flow aids, antistatic agents, flame retardants, dyes, pigments and reinforcing materials.