Basf Aktiengesellschaft

Helmut Jenne

Hermann Gausepohl

Klaus Bronstert

Adolf Echte

Karl Gerberding

Hans Mittnacht

Dietmar Bender

Uwe Blumenstein

Manfred Lieb

Juergen Pohrt

Hansjoerg Adler

Ruediger Matern

A heat-sealable plastic film produced by coextrusion or lamination, comprising 2 layers A and C and, if desired, a layer B and, if desired, a layer of an adhesion promoter for bonding each two of the layers A, B (if present) and C (the sum of the thicknesses or of the weights of A, B (if present) and C in each case being 100) comprises from 1 to 50 % of a layer of a heat-sealable, impact resistant polystyrene A, up to 95% of a base layer B and from 1 to 99% by weight of a high-melting plastic layer C.

Heat-sealable plastic film

Multilayer, sealable plastics films essentially consist of

Sealable, peelable plastics film

Block polymers of vinylaromatic compounds and conjugated dienes which possess acidic terminal groups, are present in the form of lithium salts and form an aluminum complex. A process for the preparation of such complexes and the use of these block polymer complexes as molding materials and for modifying thermoplastic materials.

Transparent, impact-resistant styrene block polymers and their

A thermoplastic molding material comprises copolymers I and II. Copolymer I is a high-impact (graft) copolymer which is derived from a monovinyl-aromatic monomer and a polymer or copolymer predominantly containing polymerized 1,3-diene units, and is present in a proportion of 0.1-1.0% by weight, based on the molding material. Copolymer II is a block copolymer with star-shaped branching, ie. a radial block copolymer, having an average of more than two branches per molecule. It is substantially derived from 55-80% by weight of a monovinyl-aromatic monomer and 20-45% by weight of a 1,3-diene monomer. The molding material may contain conventional assistants and is used for the production of blown film.

Thermoplastic molding material

Thermoplastic molding materials which contain a copolymer which has been made impact-resistant with a rubber. The copolymer is produced by polymerizing a mixture of a monovinyl-aromatic compound and an acrylic acid derivative or methacrylic acid derivative in the presence of a rubber. The folding materials contain a specific proportion of soft component. The diameter of the particles of the soft component, and the swelling index of the soft component, lie within a specific range, and the tensile strength of the molding material is higher than the yield strength.

Impact-resistant thermoplastic molding materials with improved

Thermoplastic molding compositions, based on polymers of a monovinyl-aromatic compound which have been modified with rubber to increase their impact strength, which also exhibit increased stress crack resistance. The increased stress crack resistance is achieved if the proportion of the soft component in the polymer which has been modified to increase its impact strength, and the particle size and swelling index of the soft component phase, conform to particular values, and the tensile strength and yield stress of the thermoplastic molding compositions bear a particular ratio to one another. The molding compositions may in particular be used for the manufacture of internal liners of refrigerators and foodstuff packaging containers.

Growing community of inventors

Schriesheim, Germany

Helmut Jenne