Abstract:
A highly branched polymer in the form of a comb, star, nanogel and structural combinations thereof in which a plurality of polyolefin arms formed of polymers of 1-alkenes are attached to a backbone having repeating units containing aliphatic groups, aromatic groups, heteroatom-containing groups and combinations thereof.
Abstract:
The invention relates to a ballistic-resistant moulded article containing a compressed stack of monolayers, with each monolayer containing unidirectionally oriented reinforcing fibres and at most 30 wt.% of a plastic matrix material and with the fibre direction in each monolayer being rotated with respect to the fibre direction in an adjacent monolayer, characterized in that the density ( rho P) of the compressed stack is at least 98.0 % of the theoretical maximum density. The invention also relates to a process for manufacturing the moulded article. The ballistic-resistant article may be used in, for instance, helmets, as inserts in bullet-proof vests, as armouring on military vehicles and in ballistic-resistant panels.
Abstract:
The invention relates to a process for the dyeing of a highly oriented moulded article substantially consisting of a polyethylene having a weight average molecular weight of at least 400 kg/mol. The invention also relates to dyeing of articles containing such a moulded article and to moulded articles and articles that can be obtained by these processes. In the process according to the invention the moulded article is contacted, at a temperature between 100 and 130 DEG C to a supercritical liquid in which a dye is dissolved.
Abstract:
The invention relates to a binder composition, a powder paint composition and a cross-linker that result in mat powder coatings. The mat powder coatings are obtained by adding melamine particles having a relatively small particle size. In a preferred embodiment a powder paint composition comprises (i) a polymer capable of reacting with epoxy groups, (ii) a cross-linker containing epoxy groups, wherein the cross-linker comprises at least one C5-C26 linear or branched aliphatic chain and the cross-linker has an epoxy functionality greater than 1, with the proviso that the epoxy groups are carried on the at least one aliphatic chain and (iii) melamine.
Abstract:
The invention relates to a star-shaped branched polyamide that has a high thermal stability and can be produced in existing production facilities for the corresponding linear polyamide. This is achieved by allowing the polyamide branches, at least three, to be formed from a multifunctional core having functional groups chosen from the group comprising amine and carboxyl groups, the amine or carboxyl groups being bound to an acyclic compound in which branching occurs, if it is branched, at a carbon atom, or via an acyclic chain to a heterocyclic compound showing point symmetry. The process for the preparation is carried out under the conditions of the preparation of the corresponding linear polyamide. It proves to be possible to obtain, after shorter polymerisation times, a product with mechanical properties that are comparable with those of the linear polyamide after significantly longer polymerisation times. Examples of suitable multifunctional nuclei are 2,4,6-trisaminocaproic acid-1,3,5-triazine and 4-aminomethyl-1,1-octanediamine.
Abstract:
The present invention relates to a tufted fabric and a method of manufacturing the same. The tufted fabric generally comprises a primary backing and tufts mounted in the primary backing to form a fabric with a faceside having piles and a backside having loops. A thermoplastic polymer adhesive, which bonds the tufts to the primary backing, is formed by applying a reactive mixture comprising a polymerizable monomer to the backside of the tufted fabric and in-situ polymerizing the monomers to form the thermoplastic polymer adhesive. The process is particularly advantageous for the manufacture of recyclable tufted fabrics in which the adhesive polymer and tufts are formed from substantially the same polymer. The tufted fabric can be used in articles, such as, for example carpets, rugs and upholstery.
Abstract:
The invention relates to a method for the preparation of a catalyst suitable for the polymerisation of an olefine by contacting a magnesium compound with a halogenized Ti compound, characterised in that the magnesium compound is obtained by: a) contacting metallic magnesium with an aromatic halide RX, where R is an aromatic group containing from 6 to 20 carbon atoms and X is a halide, whereupon the dissolved reaction product I is separated from the solid residual products and then b) adding an alkoxy group or aryloxy group-containing silane compound to the obtained reaction product I at a temperature of from -20 to 20 DEG C, whereupon the precipitate formed is purified to obtain reaction product II, which subsequently during a step c is contacted with TiCl4 as halogenized Ti compound and is purified to obtain a catalyst.
Abstract:
Method for the preparation of N-alkoxy-(tetra-or hexahydro)-phthalimide according to formula (I), R1 being methyl or ethyl and R2 and R3 being each independently of one another hydrogen or alkyl with 1-4C atoms of R2 and R3 together with the carbon atom to which they are bonded forming a ring with 5 or 6 C atoms, wherein the salt of the corresponding N-hydroxy-(tetrahydro- or hexahydro)-phthalimide according to formula II; with R2 and R3 as defined and M being an alkali metal, is brought into contact with R1Cl as alkylating agent, wherein R1 has the mentioned meaning. The N-alkoxy-(tetra- or hexahydro)-phthalimide can afterwards be converted with the aid of hydroxylamine sulphate into the corresponding alkoxyamine after which the alkoxyamine obtained can be isolated. In this manner a simple and commercially attractive process for the preparation of O-(m)ethylhydroxylamine can be implemented.
Abstract:
Provided is a radiation-curable, glass optical fiber coating composition which when suitably cured exhibits resistance to attack from hydrocarbon gel cable filling material. The composition contains about 10 to about 90 % by weight of a first radiation-curable oligomer; from 0 to about 40 % by weight of a reactive diluent; from 0 to about 40 % by weight of a photoinitiator; from 0 to about 10 % by weight of a pigment; and about 10 to about 90 % by weight of a second radiation-curable oligomer according to the following formula (1): R - L - C - L - R , where R and R , independently, each represents a radiation-curable functional group; L and L , independently, each represents an alkyleneoxy chain having from about 2 to about 40 carbon atoms, wherein L and L are linked to C through an oxygen atom; C comprises a hydrocarbon having from about 5 to about 40 carbon atoms and containing at least one cyclic group.
Abstract:
The invention relates to a cross-linked polymer composition containing 40-90 wt.% propylene-ethylene copolymer with 8-20 wt.% ethylene and 10-60 wt.% ethylene- alpha -olefin copolymer with 75-90 wt.% ethylene and a density of 920-890 kg/m , having a notched Izod impact strength >/= 10kJ/m at -20 DEG C and a flexural modulus higher than 500 MPa. The cross-linked polymer composition is prepared by melting and kneading propylene-ethylene copolymer and ethylene- alpha -olefin copolymer in the presence of a radical forming agent, a cross-linking agent and, eventually a peroxide inhibitor.
Abstract translation:本发明涉及含有40-90重量%丙烯 - 乙烯共聚物和8-20重量%乙烯和10-60重量%乙烯-α-烯烃共聚物与75-90重量%乙烯的交联聚合物组合物 和密度为920-890kg / m 3,在-20℃下具有缺口伊佐德冲击强度> / = 10kJ / m 2,弯曲模量高于500MPa。 交联聚合物组合物通过在自由基形成剂,交联剂和最终的过氧化物抑制剂的存在下熔融和捏合丙烯 - 乙烯共聚物和乙烯-α-烯烃共聚物来制备。