EP0000783B1 - Shaped polypropylene article - Google Patents
Shaped polypropylene article Download PDFInfo
- Publication number
- EP0000783B1 EP0000783B1 EP78100628A EP78100628A EP0000783B1 EP 0000783 B1 EP0000783 B1 EP 0000783B1 EP 78100628 A EP78100628 A EP 78100628A EP 78100628 A EP78100628 A EP 78100628A EP 0000783 B1 EP0000783 B1 EP 0000783B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- parts
- polypropylene
- platelet
- volume
- von
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/10—Esters of organic acids, i.e. acylates
- C08L1/12—Cellulose acetate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
Definitions
- Polypropylene in particular highly crystalline polypropylene, is a valued material as a molding material, because it is e.g. characterized by easy processability and leads to molded parts that have good heat resistance and high rigidity.
- a well-known disadvantage of polypropylene is, however, that its toughness (roughly the fracture toughness according to DIN 53 443) decreases very strongly with temperatures that are below its glass point - that is about + 4 ° C. In practice, this means that at temperatures below + 4 ° C the useful value of molded parts made of polypropylene is considerably restricted.
- thermoplastic polymers include, in particular, copolymers made from higher amounts of ethylene and lower amounts of an alkyl ester of acrylic or methacrylic acid (cf. AT-A-237 286).
- thermoplastic copolymers in polypropylene molding compositions, however, must be bought with a certain disadvantage, namely a noticeable drop in the stiffness values (for example in the tensile modulus of elasticity according to DIN 53 457).
- polypropylene molding compositions which are composed of (1) a certain polypropylene, (2) a certain thermoplastic copolymer made from (2.1) ethylene and (2.2) n-butyl acrylate and (3) one certain inorganic, platelet-shaped filler.
- Processing aids stabilizers, colorants, flame retardants etc.
- the new molding compositions can be produced directly from these components or, as has been practiced many times in comparable cases, via a concentrate of the filler (3) in one of the polymerization components (1) or (2). It goes without saying that care is taken to ensure that the components are distributed as homogeneously as possible; - i.e. that the other components are expediently worked in via the molten state of the polypropylene and under intensive mixing conditions, for example in a twin-screw kneader.
- the molding compositions according to the invention can be used for processing polypropylene Molding compounds used in conventional processing machines can be processed into the usual molded parts known and customary for polypropylene, for example into films, profiles, plates, hollow bodies and body parts.
- This mixture is homogenized in a twin-screw kneader at a temperature of about 220 ° C., extruded in strands, cooled and granulated.
- Test specimens are injection molded from the granules thus obtained at melt temperatures of 220 ° C., specifically for determining the tensile modulus of elasticity in accordance with DIN 53 457, as a measure of the rigidity and fracture toughness in accordance with DIN 53 443 B (25 mm dome radius) Measure of toughness.
- Example 1 is repeated with the two only exceptions that both the talc and the copolymer are eliminated.
- the stiffness of the molding compositions according to the invention is approximately the same as that of polypropylene; the cold toughness is much better in the molding compositions according to the invention than in the polypropylene.
- Very surprising is the positive finding that the absolute values of toughness are so high for the molding compositions according to the invention, since the addition of platelet-shaped talc in comparable other polypropylene molding compositions is known to significantly reduce their toughness values.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Polypropylen, insbesondere hochkristallines Polypropylen, ist ein als Formasse geschätzter Werkstoff, da es sich z.B. durch leichte Verarbeitbarkeit auszeichnet und zu Formteilen führt, die eine gute Wärmeformbeständigkeit und eine hohe Steifigkeit haben.Polypropylene, in particular highly crystalline polypropylene, is a valued material as a molding material, because it is e.g. characterized by easy processability and leads to molded parts that have good heat resistance and high rigidity.
Ein bekannter Nachteil des Polypropylens ist indessen, daß seine Zähigkeit (etwa die Bruchzähigkeit nach DIN 53 443) sehr stark abnimmit mit Temperaturen, die unterhalb seines Glaspunkts - also ca. +4°C - liegen. Diese bedeutet für die Praxis, daß bei Temperaturen unterhalb von +4°C der Gebrauchswert von Formteilen aus Polypropylen erheblich eingeschränkt ist.A well-known disadvantage of polypropylene is, however, that its toughness (roughly the fracture toughness according to DIN 53 443) decreases very strongly with temperatures that are below its glass point - that is about + 4 ° C. In practice, this means that at temperatures below + 4 ° C the useful value of molded parts made of polypropylene is considerably restricted.
Es hat daher nicht an Versuchen gefehlt, die Kältezähigkeit von Polypropylen-Formassen zu verbessern.There has been no shortage of attempts to improve the low-temperature toughness of polypropylene molding compounds.
Ein relativ gelungener - und inzwischen auch praktisch ausgeübter - Versuch besteht darin, in die Formassen zusätzlich zum Polypropylen untergeordnete Mengen bestimmter anderer linearer, thermoplastischer Polymerisate einzubringen. Zu diesen zusätzlichen thermoplastischen Polymerisaten zählen insbesondere auch Mischpolymerisate aus übergeordneten Mengen Äthylen und untergeordneten Mengen eines Alkylesters der Acryl- bzw. Methacrylsäure (vgl. AT-A-237 286).A relatively successful - and now practiced - attempt is to introduce minor amounts of certain other linear, thermoplastic polymers into the molding compounds in addition to polypropylene. These additional thermoplastic polymers also include, in particular, copolymers made from higher amounts of ethylene and lower amounts of an alkyl ester of acrylic or methacrylic acid (cf. AT-A-237 286).
Die guten Eigenschaften. die ein Zusatz der genannten thermoplastischen Mischpolymerisate in Polypropylen-Formmassen mit sich bringt, müssen indes wiederum mit einem gewissen Nachteil erkauft werden, nämlich einem deutlich spürbaren Abfall in den Steifigkeitswerten (etwa im Zug-E-Modul nach DIN 53 457).The good properties. which entails adding the above-mentioned thermoplastic copolymers in polypropylene molding compositions, however, must be bought with a certain disadvantage, namely a noticeable drop in the stiffness values (for example in the tensile modulus of elasticity according to DIN 53 457).
Eine Aufgabenstellung zur vorliegenden Erfindung war es dementsprechend, Polypropylen-Formmassen der vorstehend geschilderten Gattung aufzuzeigen, die nicht nur eine gute Kältezähigkeit, sondern auch gute Steifigkeitswerte mit sich bringen.It was therefore an object of the present invention to demonstrate polypropylene molding compositions of the type described above which not only have good low-temperature toughness, but also good stiffness values.
Es wurde gefunden, daß diese Aufgabe gelöst werden kann mit Polypropylen-Formmassen, die aufgebaut sind aus (1) einem bestimmten Polypropylen, (2) einem bestimmten thermoplastischen Mischpolymerisat aus (2.1) Äthylen und (2.2) n-Butylacrylat sowie (3) einem bestimmten anorganischen, plättchenförmigen Füllstoff.It has been found that this object can be achieved with polypropylene molding compositions which are composed of (1) a certain polypropylene, (2) a certain thermoplastic copolymer made from (2.1) ethylene and (2.2) n-butyl acrylate and (3) one certain inorganic, platelet-shaped filler.
Gegenstand der vorliegenden Erfindung ist dementsprechend eine Polypropylen-Formasse
- (1) 60 bis 85 Volumenteilen eines einen kristallinen Anteil von über 90, vorzugsweise über 95, % sowie einen Schmelzindex (2,16 kg, 230°C) von 0,5 bis 5 aufwesenden Polypropylens,
- (2) 15 bis 35 Volumenteilen eines einen Schmelzindex (2,16 kg, 230°C) von 0,5 bis 5, einen Zug-E-Modul (nach DIN 53 457) von weniger als 1 000 Nmm-2 sowie eine Glastemperatur von weniger als -20°C aufweisenden Mischpolymerisats, das
- (2.1) 100 Gewichtsteile Äthylen und
- (2.2) 30 bis 55 Gewichtsteile des Esters der Acrylsäure mit n-Butanol
einpolymerisiert enthält, sowie - (3) 2 bis 8 Volumenteile eines plättchenförmigen Talkums, der ein Seitenverhältnis (Plättchendicke : Plättchendurchmesser) von 1 : 10 bis 1 : 300, sowie eine Plättchendicke von 0,01 bis 2 pm hat,
wobei die Summe der Volumenteile unter (1), (2) und (3) 100 Volumenteile beträgt.The present invention accordingly relates to a polypropylene molding composition
- (1) 60 to 85 parts by volume of a crystalline fraction of more than 90%, preferably more than 95% and a melt index (2.16 kg, 230 ° C.) of 0.5 to 5 polypropylene,
- (2) 15 to 35 parts by volume of a melt index (2.16 kg, 230 ° C) from 0.5 to 5, a tensile modulus (according to DIN 53 457) of less than 1 000 Nmm- 2 and a glass transition temperature of copolymers having less than -20 ° C, the
- (2.1) 100 parts by weight of ethylene and
- (2.2) 30 to 55 parts by weight of the ester of acrylic acid with n-butanol
polymerized contains, as well - (3) 2 to 8 parts by volume of a platelet-shaped talc, which has an aspect ratio (platelet thickness: platelet diameter) of 1:10 to 1: 300, and a platelet thickness of 0.01 to 2 pm,
the sum of the parts by volume under (1), (2) and (3) being 100 parts by volume.
Zur stofflichen Seite der neuen Formmassen ist im einzelnen das folgende zu sagen:
- (1) Polypropylene mit den geforderten Kenndaten sind aus der Polymerchemie als solche bekannt und im Hanel erhältlich, so daß sich nähere Ausführungen erübrigen.
- (2) Für die thermoplastischen - also im unvernetzten Zustand vorliegenden - Mischpolymerisate aus Äthylen, und einer Ester-Komponente gilt sinngemäß das zum Polypropylen (1) Gesagte. Es ist jedoch ergänzend festzustellen, daß die Mischpolymerisate, die aus 100 Gewichtsteilen Äthylen und 30 bis 55 Gewichtsteilen der Ester-Komponente aufgebaut sind, zu etwa 65 bis 77 Gewichtsprozent aus einpolymerisiertem Äthylen und - auf 100% ergänzend -zu etwa 35 bis 23% Gewichtsprozent aus einpolymerisiertem Ester bestehen.
- (3) Der anorganische plättchenförmige Füllstoff mit den geforderten Kenndaten ist ein entsprechend dimensioniertes Talkum. Der Füllstoff kann - wie einschlägig üblich - vorbehandelt sein, z.B. zur Verbesserung der Haftfestigkeit und Verträglichkeit gegenüber der Polymermatrix. Als Mittel zu einer solchen Vorbehandlung seien - beispielhaft - genannt Stearate und Polymerdispersionen.
- (4) Falls gewünscht, können die erfindungsgemäßen Formassen zusätzlich zu den Komponenten (1), (2) und (3) einschlägig übliche Hilfs- bzw. Zusatzstoffe in den üblichen Mengen enthalten, z.B.
- (1) Polypropylenes with the required characteristics are known as such from polymer chemistry and are available from Hanel, so that further explanations are not necessary.
- (2) The same applies to the polypropylene (1) for the thermoplastic copolymers of ethylene and an ester component. However, it should also be noted that the copolymers, which are composed of 100 parts by weight of ethylene and 30 to 55 parts by weight of the ester component, are composed of about 65 to 77% by weight of copolymerized ethylene and - in addition to 100% - about 35 to 23% by weight consist of polymerized ester.
- (3) The inorganic platelet-shaped filler with the required characteristics is an appropriately dimensioned talc. As usual, the filler can be pretreated, eg to improve the adhesive strength and compatibility with the polymer matrix. Examples of such a pretreatment include stearates and polymer dispersions.
- (4) If desired, the molding compositions according to the invention can contain, in addition to components (1), (2) and (3), relevant auxiliaries or additives in the usual amounts, for example
Verarbeitungshilfsmittel, Stabilisatoren, farbgebende Stoffe, flammhemmende Stoffe etc.Processing aids, stabilizers, colorants, flame retardants etc.
Das Herstellen der neuen Formmassen aus ihren Komponenten kann unmittelbar aus diesen erfolgen oder - wie in vergleichbaren Fällen einschlägig vielfach geübt - über ein Konzentrat des Füllstoffs (3) in einer der Polymerisationskomponenten (1) oder (2). Es versteht sich von selbst, daß man für eine möglichst homogene Verteilung der Komponenten untereinander Sorge trägt; - d.h. daß man zweckmäßigerweise über den schmelzflüssigen Zustand des Polypropylens und unter intensiven Mischbedingungen die anderen Komponenten zuarbeitet, etwa in einem Zweischneckenkneter.The new molding compositions can be produced directly from these components or, as has been practiced many times in comparable cases, via a concentrate of the filler (3) in one of the polymerization components (1) or (2). It goes without saying that care is taken to ensure that the components are distributed as homogeneously as possible; - i.e. that the other components are expediently worked in via the molten state of the polypropylene and under intensive mixing conditions, for example in a twin-screw kneader.
Die erfindungsgemäßen Formmassen können auf den zur Verarbeitung von Polypropylen-Formmassen gängigen Verarbeitungsmaschinen zu den für Polypropylen bekannten und üblichen Formteilen verarbeitet werden, z.B. zu Folien, Profilen, Platten, Hohlkörpern und Karosserieteilen.The molding compositions according to the invention can be used for processing polypropylene Molding compounds used in conventional processing machines can be processed into the usual molded parts known and customary for polypropylene, for example into films, profiles, plates, hollow bodies and body parts.
Es wird ausgangen von einem Gemisch aus
- (1) 70 Volumenteilen eines einen kristallinen Anteil von 95% sowie einen Schmelzindex (2,16 kg, 230°C) von 2,0 aufweisenden grießförmigen Polypropylens,
- (2) 25 volumenteilen eines einen Schmelzindex (2,16 kg, (230°C) von 1,5 einen Zug-E-Modul (nach DIN 53 457) von 30 Nmm-2 sowie eine Glastemperatur von <-100°C aufweisenden grießförmigen Mischpolymerisats, das
- (2.1) 100 Gewichtsteile Äthylen sowie
- (2.2) 30 Gewichtsteile des Esters der Acrylsäure mit n-Butanol
einpolymerisiert enthält, sowie - (3) 5 Volumenteilen eines plättchenförmigen Talkums, das ein Seitenverhältnis (Plättchendicke : Plättchendurchmesser) von 1 : 10 bis 1 : 200, sowie eine Plättchendicke von 0,02 bis 1 µm hat.
- (1) 70 parts by volume of a crystalline fraction of 95% and a melt index (2.16 kg, 230 ° C.) of 2.0 grit-shaped polypropylene,
- (2) 25 parts by volume with a melt index (2.16 kg, (230 ° C) of 1.5 a tensile modulus (according to DIN 53 457) of 30 Nmm- 2 and a glass transition temperature of <-100 ° C) semolina copolymer, the
- (2.1) 100 parts by weight of ethylene as well
- (2.2) 30 parts by weight of the ester of acrylic acid with n-butanol
polymerized contains, as well - (3) 5 parts by volume of a platelet-shaped talc, which has an aspect ratio (platelet thickness: platelet diameter) of 1:10 to 1: 200, and a platelet thickness of 0.02 to 1 μm.
Dieses Gemisch wird in einem Zweischneckenkneter bei einer Temperatur von etwa 220°C homogenisiert, in Strängen ausgepreßt, abgekühlt und granuliert.This mixture is homogenized in a twin-screw kneader at a temperature of about 220 ° C., extruded in strands, cooled and granulated.
Aus dem so erhaltenen Granulat werden bei Massetemperaturen von 220°C Prüfkörper spritzgegossen, und zwar für die Bestimmung des Zug-E-Moduls nach DIN 53 457, als Maß für die Steifigkeit und der Bruchzähigkeit nach DIN 53 443 B (25 mm Kalottenradius) als Maß für die Zähigkeit.Test specimens are injection molded from the granules thus obtained at melt temperatures of 220 ° C., specifically for determining the tensile modulus of elasticity in accordance with DIN 53 457, as a measure of the rigidity and fracture toughness in accordance with DIN 53 443 B (25 mm dome radius) Measure of toughness.
Die an den Prüfkörpern ermittelten Werte sind'in der unten stehenden Tabelle angegeben.The values determined on the test specimens are given in the table below.
Das Beispiel wird wiederholt mit der einzigen Ausnahme, daß das Talkum in Wegfall kommt.The example is repeated with the only exception that the talc is eliminated.
Die in den entsprechenden Prüfkörpern ermittelten Werte finden sich ebenfalls in der Tabelle.The values determined in the corresponding test specimens can also be found in the table.
Das Beispiel 1 wird wiederholt mit den beiden einzigen Ausnahmen, daß sowohl das Talkum als auch das Mischpolymerisat in Wegfall kommen.Example 1 is repeated with the two only exceptions that both the talc and the copolymer are eliminated.
Die an den dabei erhaltenen Prüfkörpern gefundenen Werte sind wiederum in der Tabelle angegeben.
Wie die Tabelle zeigt, ist die Steifigkeit bei den erfindungsgemäßen Formmassen etwa gleichgroß wie beim Polypropylen; die Kältezähigkeit ist bei den erfindungsgemäßen Formmassen sehr viel besser als beim Polypropylen. Sehr überraschend ist der positive Befund, daß die Absolutwerte der Zähigkeit bei den erfindungsgemäßen Formmassen so hoch liegen, da ein Zusatz von plättchenförmigem Talkum in vergleichbaren anderen Polypropylen-Formmassen deren Zähigkeitswerte bekanntlich in erheblichem Maße drückt.As the table shows, the stiffness of the molding compositions according to the invention is approximately the same as that of polypropylene; the cold toughness is much better in the molding compositions according to the invention than in the polypropylene. Very surprising is the positive finding that the absolute values of toughness are so high for the molding compositions according to the invention, since the addition of platelet-shaped talc in comparable other polypropylene molding compositions is known to significantly reduce their toughness values.
Claims (1)
the sum of the parts by volume under (1), (2) and (3) being 100.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772736792 DE2736792A1 (en) | 1977-08-16 | 1977-08-16 | POLYPROPYLENE MOLDING COMPOUND |
| DE2736792 | 1977-08-16 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0000783A2 EP0000783A2 (en) | 1979-02-21 |
| EP0000783A3 EP0000783A3 (en) | 1979-03-07 |
| EP0000783B1 true EP0000783B1 (en) | 1982-09-15 |
Family
ID=6016456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP78100628A Expired EP0000783B1 (en) | 1977-08-16 | 1978-08-09 | Shaped polypropylene article |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0000783B1 (en) |
| AT (1) | AT362581B (en) |
| DE (2) | DE2736792A1 (en) |
| IT (1) | IT1097591B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57207630A (en) * | 1981-06-15 | 1982-12-20 | Toa Nenryo Kogyo Kk | Thermoplastic resin composition |
| FR2587350B1 (en) * | 1985-04-24 | 1987-10-30 | Charbonnages Ste Chimique | RIGID TERNARY COMPOSITIONS WITH IMPROVED IMPACT RESISTANCE, A PROCESS FOR THEIR PREPARATION AND ARTICLES OBTAINED |
| US4758629A (en) * | 1986-05-28 | 1988-07-19 | E. I. Du Pont De Nemours And Company | Thermoplastic compositions of crystalline polyolefin and ethylene-containing copolymer |
| US4888391A (en) * | 1988-08-12 | 1989-12-19 | Exxon Chemical Patents Inc. | Paintable thermoplastic polyolefin compositions having improved flexural properties |
| DE4040602A1 (en) * | 1990-12-19 | 1992-07-02 | Schock & Co Gmbh | CAST PLASTIC PARTS |
| CA2119575C (en) * | 1991-09-24 | 2004-11-16 | Jerry G. Latiolais | Copolymers of ethylene and alkyl acrylate, processes for preparing same and high clarity films |
| US5464687A (en) * | 1992-12-07 | 1995-11-07 | Lyondell Petrochemical Company | Wettable polyolefin fiber compositions and method |
| US5550192A (en) * | 1992-12-07 | 1996-08-27 | Lyondell Petrochemical Company | Dyeable polyolefin compositions and dyeing polyolefin compositions |
| US5468259A (en) * | 1992-12-07 | 1995-11-21 | Sheth; Paresh J. | Dyeable polyolefin compositions and dyeing polyolefin compositions |
| US5614574A (en) * | 1994-07-12 | 1997-03-25 | Lyondell Petrochemical Company | Wettable polyolefin fiber compositions and method |
| FI974178A0 (en) | 1997-11-07 | 1997-11-07 | Borealis As | Polypropensammansaettningar |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL126298C (en) * | 1960-07-12 | |||
| DE2033803B2 (en) * | 1970-07-08 | 1974-10-03 | Basf Ag, 6700 Ludwigshafen | Polypropylene molding compounds |
| DE2441147A1 (en) * | 1974-08-28 | 1976-03-11 | Basf Ag | Packing strips of polypropylene compsn - contg finely divided chalk and or talcum |
-
1977
- 1977-08-16 DE DE19772736792 patent/DE2736792A1/en not_active Withdrawn
-
1978
- 1978-07-31 IT IT26341/78A patent/IT1097591B/en active
- 1978-08-09 EP EP78100628A patent/EP0000783B1/en not_active Expired
- 1978-08-09 DE DE7878100628T patent/DE2862029D1/en not_active Expired
- 1978-08-14 AT AT591278A patent/AT362581B/en not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| Kunststoff-Taschenbuch, 20. Ausgabe, Hansjürgen Saechtling, Carl Hanser Verlag, München/Wien (1977), Seiten 239-242 * |
Also Published As
| Publication number | Publication date |
|---|---|
| IT7826341A0 (en) | 1978-07-31 |
| DE2862029D1 (en) | 1982-11-04 |
| ATA591278A (en) | 1980-10-15 |
| EP0000783A2 (en) | 1979-02-21 |
| IT1097591B (en) | 1985-08-31 |
| EP0000783A3 (en) | 1979-03-07 |
| AT362581B (en) | 1981-05-25 |
| DE2736792A1 (en) | 1979-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0640650B1 (en) | Blends of elastomeric polypropylene and non-olefinic thermoplasts | |
| EP0000783B1 (en) | Shaped polypropylene article | |
| DE1104694B (en) | Process for the production of thermoplastic masses | |
| DE1928369B2 (en) | Process for the production of glass fiber reinforced, thermoplastic resin molded preparations | |
| EP0039396B1 (en) | Ternary thermoplastic moulding composition containing a propylene homopolymer | |
| DE4191066C2 (en) | Polypropylene resin composition | |
| DE2235052B2 (en) | THERMOPLASTIC MOLDING COMPOUNDS FOR THE PRODUCTION OF IMPACT-RESISTANT MOLDED BODIES | |
| DE3248392C2 (en) | ||
| DE1197226B (en) | Molding compounds made from polypropylene and ethylene copolymers | |
| DE2658810C2 (en) | Wood flour-filled polyolefin molding compounds with improved mechanical properties | |
| DE4113826C2 (en) | Propylene resin composition | |
| DE2061361C3 (en) | Thermoplastic molding compound | |
| DE69133386T2 (en) | Graft copolymer-containing polycarbonate resin composition | |
| WO1997029152A2 (en) | Polyethylene blend | |
| EP0807663A2 (en) | High toughness polyolefin blends | |
| DE2733470A1 (en) | Binary polypropylene moulding compsn. - contg. copolymer of ethylene! and alkyl (meth)acrylate! combining stiffness and cold toughness | |
| EP0189544B1 (en) | Thermoplastic compositions | |
| DE1494100A1 (en) | Polyethylene mass | |
| DE2338711C2 (en) | Fire retardant concentrate for finishing polypropylene | |
| DE2359719A1 (en) | POLYMER BLEND AND PROCESS FOR IMPROVING THE PROPERTIES OF A POLYMER BLEND CONTAINING A NON-Grafted, Crystallizable Polymer | |
| EP0039395A2 (en) | Ternary thermoplastic moulding composition containing an ethylene-propylene copolymer | |
| EP0733674B1 (en) | Moulding composition based on an ethylene polymer with high density | |
| DE2735027A1 (en) | Modified propylene!-ethylene! block copolymer - with improved cold resistance and modulus | |
| DE2733469A1 (en) | Polypropylene compsns. with improved cold resistance and stiffness - contain ethylene!-alkyl (meth)acrylate! copolymer and polyethylene | |
| DE2140152B2 (en) | Thermoplastic molding compounds with improved flowability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Designated state(s): BE DE FR GB |
|
| AK | Designated contracting states |
Designated state(s): BE DE FR GB |
|
| 17P | Request for examination filed | ||
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Designated state(s): BE DE FR GB |
|
| REF | Corresponds to: |
Ref document number: 2862029 Country of ref document: DE Date of ref document: 19821104 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19940722 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19940801 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19940816 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19940824 Year of fee payment: 17 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19950809 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19950811 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19950831 |
|
| BERE | Be: lapsed |
Owner name: BASF A.G. Effective date: 19950831 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19950809 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19960430 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |