Bolt for embedding in fibre-reinforced composite material (for example fibreglass-reinforced polyester) for attaching and receiving fatigue-generating changing loads. For example, for fastening rotor blades on windmills. The bolt is of cylindrical shape with positive slip on the entire glued surface, and the attachment for drive is received only on adhesive bonding. The bolt is sharpened by an inc...

A method for preparing a high resilient flexible polyurethane foam, in slabstocks and moulding, wherein a modified or not high reactive polyether-polyol, having an average molecular weight from 3,000 to 10,000 and an average functionality not larger than 4 with an amount of at least 50 % hydroxyl groups, is brought into reaction with organic polyisocyanates in the presence of a "cross-linker/exten...

A process is provided for mechanically surface-finishing a textile fabric which comprises ccontinuously feeding said fabric from a source of supply, such that said fabric lies in a single plane, subjecting successive adjacent sections of the fabric to intermittent mechanical impact with an abrasive means across the width of said fabric thereby avoiding substantial sustained contact between the fab...

The invention relates to a method for preparing particles of gel-forming polysaccharides which can be used as gel matrices for separating different biomolecules, such as proteins or nucleic acids. The gel particles are prepared by dissolving the polysaccharide in water at a temperature above its dissolving temperature, and emulsifying the solution in an organic solvent to form a water-in-oil emuls...

Polyester fiberfill having spiral crimp that is randomly-arranged and entangled in the form of fiberballs with binder fibers, preferably with a minimum of hairs extending from the surface of the fiberballs, so as to be air-transportable on account of the low cohesion between the balls. A process for making such fiberballs by repeatedly air-tumbling small tufts of such fiberfill/binder/blend agains...

A multifilament yarn of an aromatic polyamide, in particular poly-p-phenylene terephthalamide, is provided with an adhesive coating of a cured epoxy compound, the yarn having a free epoxide content not higher than 10 mmoles/kg. The yarn is made by spinning a solution of an aromatic polyamide into a coagulation bath and subjecting the resulting filaments to the subsequent steps of washing, applying...

A carrier web of a sheet-like fiber material consisting of a glass fiber mat and a mat of synthetic fibers, which and are needled together and are end-consolidated with a polymer-free low-formaldehyde melamine-formaldehyde precondensate, and a process for its preparation are described. The carrier web is preferably end-consolidated with a melamine-formaldehyde precondensate which is partly etherif...

Shrink articles, such as shrink tubes, sleeves, caps and the like, are made from extrudable materials, by a procedure in which a parison is first injection-moulded or extruded, is then crosslinked and, in this crosslinked state, is distended, and, by cooling this distended shaped article, the distended state of the latter is fixed. According to the invention, such a procedure is characterised in t...

A security label comprised of at least two magnetically soft materials having different coercivities but similar thresholds of magnetic saturation.

A composite sheet stock for microwave heating comprises a susceptor sheet (30) having a dielectric support layer (36), a heater layer (34) of microwave interactive material and a heat-conducting microwave reflecting layer (130). A receptacle with a self-supporting configuration for combined microwave baking and cooking of a food article, such as pizza, is constructed from susceptor stock and compr...

A concrete roof tile is coated with an unfilled or aggregate- and/or pigment-filled film of a copolymer containing (a) from 0.03 to 2% by weight of tin in the form of a polymerizable organotin compound (b) from 0.5 to 5% by weight of (meth)acrylic acid, (meth)acrylamide and/or vinylsulfonic acid and (c) from 0.1 to 5% by weight of carbonyl-containing monomers crosslinked with certain dicarboxodihy...

A concrete roof tile is coated with an unfilled or aggregate- and/or pigment-filled film of a copolymer containing (a) from 0.03 to 2% by weight of tin in the form of a polymerizable organotin compound (b) from 0.5 to 5% by weight of (meth)acrylic acid, (meth)acrylamide and/or vinylsulfonic acid and (c) from 0.1 to 5% by weight of carbonyl-containing monomers crosslinked with certain dicarboxodihy...

Derivatives of milbemycins D, A3 and A4 and of the corresponding sec-butyl compound have a halogen atom at the 13-position; at the 5-position, they have an oxygen (keto) atom, an oxime group or a substituted oxime group. They may be prepared from known compounds by any appropriate combination of halogenation, ketonization and oximation.

1-N-[ omega -amino- alpha -hydroxyalkanoyl] kanamycins A and B of the formula I in which R represents OH or NH2, are prepared by acylation of polysilylated kanamycin A or B, or polysilylated kanamycin A or B which has a protective group other than silyl on the 6'-amino group, with an acylating derivative of an acid of the formula II in which n is an integer from 0 to 2 and B is an ...