摘要:
Polytetrahydrofurans containing terminal acrylate or methacrylate groups and having a molecular weight of from 200 to 10,000 and a process for producing such polytetrahydrofurans by homopolymerizing tetrahydrofuran, optionally in an organic solvent, together with acrylic acid anhydride and/or methacrylic acid anhydride and with the aid of a catalyst. The polytetrahydrofuran can be used as rubbers.
摘要:
Lubricant base materials containing ester groups may be stabilised by adding a small quantity of carbodiimides and the service life of lubricants manufactured therefrom may be decisively extended.
摘要:
Thermoplastic moulding compounds consisting of 99.8-95% by weight of a mixture consisting of an aromatic polycarbonate, a graft polymer and optionally a thermoplastic vinyl polymer and/or the usual additives and 0.2 to 5% by weight of a polyalkylene ether which has been modified by a radical former.
摘要:
The present invention is related to polycarbonate molding compositions containing a co-precipitate of a polycarbonate resin and a fluoropolymer. This co-precipitate was found to be suitable as an additive for polycarbonate resins because it offers improved dispersibility with the resin and good flammability performance as well as aesthetic characteristics. The co-precipitate is prepared by first mixing an aqueous dispersion of a fluoropolymer with a polycarbonate solution and then precipitating both using a suitable precipitation agent. After isolation washing and drying the co-precipitate of the invention is suitable for incorporation in a polycarbonate resin optionally with known flame retarding agents. Molded parts prepared from the compositions of the invention are characterized by their improved homogeneity and flame retardance.
摘要:
The present invention relates to new phthalimides of the formula (I) ##STR1## wherein n is an integer of from 1 to 12, preferably 1 to 4 and especially 1 to 2 andR is H or F,and their preparation, these phthalimides being suitable, in combination with alkali metal salts, as flameproofing agent combinations for thermoplastic, branched, aromatic polycarbonates.
摘要:
The present invention relates to new phthalimides of the formula (I) ##STR1## wherein n is an integer of from 1 to 12, preferably 1 to 4 and especially 1 to 2 andR is H or F,and their preparation, these phthalimides being suitable, in combination with alkali metal salts, as flameproofing agent combinations for thermoplastic, branched, aromatic polycarbonates.