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DE1087804B - Process for the production of molded articles of high mechanical strength from porous styrene polymers - Google Patents

Process for the production of molded articles of high mechanical strength from porous styrene polymers

Info

Publication number
DE1087804B
DE1087804B DEB33374A DEB0033374A DE1087804B DE 1087804 B DE1087804 B DE 1087804B DE B33374 A DEB33374 A DE B33374A DE B0033374 A DEB0033374 A DE B0033374A DE 1087804 B DE1087804 B DE 1087804B
Authority
DE
Germany
Prior art keywords
styrene polymers
porous
mechanical strength
production
high mechanical
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.)
Pending
Application number
DEB33374A
Other languages
German (de)
Inventor
Dr Fritz Stastny
Dr Ferdinand Meyer
Dr Julius Thewalt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Priority to DEB33374A priority Critical patent/DE1087804B/en
Priority to FR1134674D priority patent/FR1134674A/en
Publication of DE1087804B publication Critical patent/DE1087804B/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/22After-treatment of expandable particles; Forming foamed products
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/58Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/22After-treatment of expandable particles; Forming foamed products
    • C08J9/228Forming foamed products
    • C08J9/236Forming foamed products using binding agents
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36After-treatment
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02Homopolymers or copolymers of hydrocarbons
    • C08J2325/04Homopolymers or copolymers of styrene
    • C08J2325/06Polystyrene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Description

Verfahren zur Herstellung von Formkörpern hoher mechanischer Festigkeit aus porösen Styrolpolymerisaten Es hat nicht an Versuchen gefehlt, poröse Kunststoffe miteinander zu verkleben und Formkörper aus ihnen mit einer harten, schlagfesten Schutzschicht zu versehen. Für viele Zwecke ist dies erforderlich, weil die mechanische Festigkeit von Formkörpern, beispielsweise aus porösen Styrolpolymerisaten, nicht immer ausreicht. Man hat deshalb schon versucht, solche Formkörper zu lackieren. Hierbei dringt aber das tfberzugsmittel in die zum Teil offenen Zellen ein, die in der unregelmäßigen Oberfläche solcher poröser Massen enthalten sind. Dadurch werden die Eigenschaften des Schaumharzes verschlechtert. Der Verbrauch an überzugsmitteln ist unverhältnismäßig hoch, dennoch erhält man keine regelmäßig ausgebildete Oberfläche. Polymerisierbare Mischungen aus ungesättigten Polyesterharzen und Styrol sind für die Verarbeitung von porösem Polystyrol nicht brauchbar, weil das monomere Styrol ein Lösungsmittel für Polystyrol ist. Process for the production of moldings with high mechanical strength from porous styrene polymers There has been no shortage of attempts, porous plastics to glue together and molded from them with a hard, impact-resistant To provide protective layer. For many purposes this is required because the mechanical Strength of moldings, for example made of porous styrene polymers, not always sufficient. Attempts have therefore already been made to paint such moldings. Here, however, the coating agent penetrates into the cells, some of which are open are contained in the irregular surface of such porous masses. Through this the properties of the foam resin are deteriorated. The consumption of coating agents is disproportionately high, but you do not get a regular surface. Polymerizable blends of unsaturated polyester resins and styrene are for The processing of porous polystyrene is not useful because the monomeric styrene is a solvent for polystyrene.

Es wurde nun gefunden, daß man Formkörper aus porösen Styrolpolymerisaten mit großer mechanischer Festigkeit herstellen kann, wenn man Teilchen aus porösen Styrolpolymerisaten mit Hilfe von Polyglycidyläther enthaltenden Gießharzmischungen miteinander zu Formkörpern verbindet oder Formkörper aus porösen Styrolpolymerisaten mit solchen Gießharzmischungen überzieht. Geeignete Polyglycidyläther können durch Umsetzung von mehrwertigen Phenolen, wie 4,4'-D ihydroxydiphenylpropan, oder von mehrwertigen Alkoholen, z. B. mit Epichlorhydrin, erhalten werden. It has now been found that moldings made from porous styrene polymers can be obtained with great mechanical strength can be produced if you have particles of porous Styrene polymers with the aid of casting resin mixtures containing polyglycidyl ethers connects to one another to form moldings or moldings made of porous styrene polymers coated with such casting resin mixtures. Suitable polyglycidyl ethers can by Implementation of polyhydric phenols, such as 4,4'-D ihydroxydiphenylpropane, or of polyhydric alcohols, e.g. B. with epichlorohydrin can be obtained.

Besonders vorteilhaft ist es, die Polyglycidyläther in Verbindung mit Aminen, z. B. primären oder sekundären Diaminen, zu verwenden, in denen sich die Aminogruppen an zwei durch Brückenatome oder -atomgruppen miteinander verbundenen, gegebenenfalls hydrierten Phenylresten befinden können. Besonders geeignete Amine sind z. B. p,p'-Diaminodicyclohexylmethan oder p,p'-D iaminodiphenylharnstoff. It is particularly advantageous to combine the polyglycidyl ethers with amines, e.g. B. primary or secondary diamines, to use in which the amino groups on two linked by bridging atoms or atom groups, optionally hydrogenated phenyl radicals can be located. Particularly suitable amines are z. B. p, p'-diaminodicyclohexylmethane or p, p'-diaminodiphenylurea.

Die porösen Styrolpolymerisate können auf verschiedeneWeise mit den Gießharzen aus Polyglycidyläther verarbeitet werden. So können Teilchen aus porösem Polystyrol mit den Gießharzmischungen zu festen, harten und dennoch leichten Formkörpern verarbeitet werden. Ferner kann man Formkörper aus porösen Styrolpolymerisaten, z. B. durch Tauchen, Streichen oder Aufsprühen mit den härtbaren Polyglycidyläthergießharzmischungen iiberziehen und diese dann härten. Man kann auch die Innenflächen einer verschließbaren Form ganz oder teilweise mit einer Schicht aus Polyglycidyläthergießharzgemisch bedekken, die Form dann entweder ganz oder nur zum Teil mit kleinteiligem, gegebenenfalls porösem, noch blähfähigem Styrolpolymerisat füllen und nach dem Schließen erwärmen. Es lassen sich so poröse Formkörper mit einer ganz oder teilweise geschlossenen, schlagfesten Oberfläche herstellen. Die Gießharzmischungen schrumpfen nicht, so daß sehr maß gerechte Formkörper mit harten Außenflächen erhalten werden. The porous styrene polymers can in various ways with the Casting resins made from polyglycidyl ether can be processed. So can particles made of porous Polystyrene with the cast resin mixtures to form solid, hard and yet light molded bodies are processed. Furthermore, molded articles made of porous styrene polymers, z. B. by dipping, brushing or spraying with the curable Polyglycidyläthergießharzmischungen overcoat and then harden them. You can also use the inner surfaces of a lockable Form completely or partially with a layer of polyglycidyl ether casting resin mixture cover the form either completely or only partially with small pieces, if necessary Fill with porous, still expandable styrene polymer and heat after closing. It can be porous moldings with a completely or partially closed, Create an impact-resistant surface. The cast resin mixtures do not shrink, like this that very dimensionally fair moldings with hard outer surfaces are obtained.

Beispiel Ein Formkörper aus porösem Polystyrol vom spezifischen Gewicht 0,08 wird mit einem Polyglycidäther aus Butantriol und Epichlorhydrin mit dem Epoxywert 0,65 (der Epoxywert gibt an, wieviel Äquivalente Epoxygruppen in 100 g Polyglycidyläther enthalten sind), der 32,5 Teile p,p'-Diaminodiphenylmethan enthält, bestrichen. Es entsteht nach 8stündiger Lagerung bei 250 C ein leichter Formkörper mit einer klaren, harten Außenschicht. Example A molded body made of porous polystyrene with a specific weight 0.08 is obtained with a polyglycid ether made from butanetriol and epichlorohydrin with the epoxy value 0.65 (the epoxy value indicates how many equivalents of epoxy groups in 100 g of polyglycidyl ether are included), which contains 32.5 parts of p, p'-diaminodiphenylmethane, coated. After 8 hours of storage at 250 ° C., a light molded body with a clear, hard outer layer.

PATNTANSPUCH: Verfahren zur Herstellung von Formkörpern aus porösen Styrolpolymerisaten mit hoher mechanischer Festigkeit, dadurch gekennzeichnet, daß Teilchen aus porösen Styrolpolymerisaten mit Hilfe von Polyglycidyläther enthaltenden Gießharzmischungen miteinander zu Formkörpern verbunden oder Formkörper aus porösen Styrolpolymerisaten mit solchen Gießharzmischungen überzogen werden. PATNTANSPUCH: Process for the production of molded articles from porous Styrene polymers with high mechanical strength, characterized in that Particles of porous styrene polymers with the help of polyglycidyl ether-containing Cast resin mixtures connected to one another to form molded bodies or molded bodies made of porous Styrene polymers are coated with such casting resin mixtures.

Claims (1)

In Betracht gezogene Druckschriften: USA.-Patentschrift Nr. 2 651 589. References considered: U.S. Patent No. 2,651 589.
DEB33374A 1954-11-12 1954-11-12 Process for the production of molded articles of high mechanical strength from porous styrene polymers Pending DE1087804B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEB33374A DE1087804B (en) 1954-11-12 1954-11-12 Process for the production of molded articles of high mechanical strength from porous styrene polymers
FR1134674D FR1134674A (en) 1954-11-12 1955-11-07 Method for increasing the strength of moldings of porous plastics

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1134674X 1954-11-12
DEB33374A DE1087804B (en) 1954-11-12 1954-11-12 Process for the production of molded articles of high mechanical strength from porous styrene polymers

Publications (1)

Publication Number Publication Date
DE1087804B true DE1087804B (en) 1960-08-25

Family

ID=63798703

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB33374A Pending DE1087804B (en) 1954-11-12 1954-11-12 Process for the production of molded articles of high mechanical strength from porous styrene polymers

Country Status (2)

Country Link
DE (1) DE1087804B (en)
FR (1) FR1134674A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651589A (en) * 1949-10-25 1953-09-08 Shell Dev Process for forming cured glycidyl ether resinous bonds between two solid surfaces

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651589A (en) * 1949-10-25 1953-09-08 Shell Dev Process for forming cured glycidyl ether resinous bonds between two solid surfaces

Also Published As

Publication number Publication date
FR1134674A (en) 1957-04-16

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