Rohm Gmbh Chemische Fabrik

Roehm Gmbh Chemische Fabrik

Rohm Gmbh

Roehm Gmbh

Ulrich Terbrack

Werner Siol

Klaus Koralewski

Jens-Dieter Fischer

Thomas Suefke

Reiner Mueller

Erwin Felger

Jurgen Maul

Wolfgang Klesse

Michael Wicker

Peter J Arndt

Franz Wenzel

Winfried Wunderlich

Klaus Frank

Ernst Heil

Frank Wenzel

Klaus Koralewsky

The invention relates to a recycable, heat-sealable plastic film for hermetically sealing plastic containers, comprising at least two layers which mutually adhere, (i) a support layer comprised of an impact resistant polystyrene resin and (ii) a sealing layer consisting essentially of: a) 20-100 weight % of a copolymer P consisting essentially of: (p1) 20-90 weight % methyl methacrylate and/or ethyl methacrylate; (p2) 10-80 weight % of at least one monomer of formula I ##STR1## where R.sub.1 represents an C.sub.3-24 alkyl group; and (p3) 0-10 weight %, preferably 1-8 weight %, of a monomer which is copolymerizable with and different from the monomers (p1) and (p2); and

Multilayered heat-sealable plastic films

The invention relates to a polymerization process for the production of polymethacrylate molding compounds having high heat deflection temperature and high stability against thermal degradation, are prepared by polymerizing methacrylate monomer in a reaction medium such that at least 70 wt. % of the polymethacrylate molding compound is produced at a monomer concentration in the reaction medium of at least 5 mol per liter.

Polymethacrylate molding compound with high heat deflection temperature

This invention relates to plastic containers hermetically sealed with a peelably heat-sealable plastic film comprised of a polymeric mixture comprised of 1-99 parts by weight (pbw) of an impact-resistant polystyrene resin and 99-1 pbw of a copolymer consisting essentially of: p1) 20-90 weight % methyl methacrylate, ethyl methacrylate or a mixture thereof; p2) 10-80 weight % of at least one monomer of formula (I): ##STR1## and where R.sub.1 represents an alkyl group with 3-24 C atoms; and p3) 0-10 weight %, preferably 1-8 weight %, of a monomer which is copolymerizable with and different from the monomers (p1) and (p2).

Heat-sealable plastic films

Compatible polymer blends PM, exhibiting a single glass transition temperature Tg comprise

Compatible polymer blends

Polymer mixtures made from two different polymer components and exhibiting LCST behavior are provided for use in applications which require temperature-dependent light permeability. The polymer mixtures P are made from:

Polymer mixtures with lower critical solution temperature (LCST) behavior

This invention relates to high impact strength polymer blends containing at least two two-phase or multiphase polymers P1 and P2, which in turn contain at least one toughening phase A1 or A2 and at least one hardness phase B1 or B2. B1 and B2 differ in chemical structure and are thermodynamically compatible with one another. The polymer blend optionally contains another thermoplastic polymer B'3 and/or another two-phase or multiphase polymer P4 contain at least one toughening phase A4 and at least one hardness phase B4, provided that B'3 and/or B4 are different from B1 and B2 and are thermodynamically compatible with B1 and B2.

High impact strength polymer blends

This invention relates to heat-sealable plastic films PF with at least two-phased structure in the thickness range up to 400 .mu.m that are suitable for tightly sealing plastic comprising

Heat sealable plastic film

The invention relates to a heat-sealable plastic film PF with an at least two-stage construction ranging in thickness up to 400 micrometer, that is suitable for tightly sealing plastic containers, comprising:

Polystyrene adhering heat-sealable plastic film

Graft polymerizates on the basis of acrylates and methacrylates, comprise one or more graft monomers of the formula (I) ##STR1## where R.sub.1 stands for a hydrocarbon group having 2-24 carbon atoms and a base polymer of which 55-100 wt. % is synthesized from one or more monomers of the formula (II) ##STR2## wherein R.sub.2 stands for a hydrocarbon group having 2-24 carbon atoms, provided that the groups R.sub.1 and R.sub.2 exhibit Van-der-Waals volumes which differ by less than 30%, and that at least 10 wt. % based on the total monomers of formula (I) are grafted on the base polymer.

Acrylate-methacrylate graft polymerizate

Compatible polymer mixtures (polymer blends) comprised of polymers of a cyclopentyl (meth)acrylate and a styrene.

Compatible polymer mixtures of polystyrene and polycyclopentyl

A composition universally usable as an impact modifier for synthetic resins comprising

Impact modified synthetic resins

Thermoplastically processable polymer mixtures with high solvent resistance. The polymer mixtures are made up of

Thermoplastically processable solvent-resistant polymer mixtures

Polymer mixtures

A compatible polymer blend consisting essentially of:

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Reinheim, Germany

Ulrich Terbrack