摘要:
Self-extinguishing thermoplastic polyester molding materials containing linear aromatic polyesters, polyphenylene ethers and additives containA. from 20 to 50% by weight of polyethylene terephthalate and/or polybutylene terephthalate, as much as 20 mol % of which may be modified with other dicarboxylic acids and/or diols,B. from 10 to 40% by weight of one or more polyphenylene ethers,C. from 5 to 15% by weight of one or more alkali metal or alkaline earth metal phosphates, high-boiling phosphoric acid esters, phosphorous acid esters, phosphinic acid esters or phosphonous acid esters or organic phosphine oxides,D. from 5 to 30% by weight of framework-forming fillers,E. from 0 to 30% by weight of one or more aromatic polycarbonates,F. from 0 to 30% by weight of glass fibers,G. from 0 to 20% by weight of one or more elastomeric polymers,H. from 0 to 20% by weight of one or more styrene polymers, the percentages of components A to H summing to 100, andI. if required, additives in effective amounts.
摘要:
Thermoplastic molding materials containing(A) not less than 5% by weight of a polyphenylene ether and(B) not less than 5% by weight of a nylon furthermore contain(C) not less than 0.1% by weight of a copolymer composed of(C.sub.1) not less than 30% by weight of a styrene of the general formula I ##STR1## where R and R.sup.1 are alkyl of 1 to 8 carbon atoms, hydrogen and/or halogen and n is 0, 1, 2 or 3,(C.sub.2) not less than 0.5% by weight of an epoxide-containing polymerizable monomer and/or(C.sub.3) not less than 0.05% by weight of a halobenzyl-containing polymerizable monomer possessing a structural unit (II) ##STR2## where X is halogen, R.sup.2 and R.sup.3 are each alkyl of 1 to 8 carbon atoms or hydrogen and n is 1, 2 or 3, and/or(C.sub.4) not less than 0.05% by weight of a polymerizable monomer containing oxazoline groups and(C.sub.5) from 0 to 20% by weight of acrylonitrile, methacrylonitrile and/or other nonionic comonomers, and(D) from 0 to 35% by weight of a toughened rubber, and possess particularly good impact strength.
摘要:
Thermoplastic molding materials contain(A) from 5 to 95% by weight of a nylon and(B) from 5 to 95% by weight of a copolymer composed of(B.sub.1) from 50 to 99.9% by weight of a styrene of the general formula I ##STR1## where R.sup.1 is alkyl or 1 to 4 carbon atoms or hydrogen, R.sup.2 is alkyl of 1 to 6 carbon atoms or halogen and m is 0, 1, 2 or 3,(B.sub.2) from 0.1 to 30% by weight of a monomer containing epoxide groups (II) ##STR2## or of a monomer containing lactam groups (III) ##STR3## or of a monomer containing halobenzyl groups (IV) ##STR4## where R.sup.3 is a divalent, branched or straight-chain alkyl group of 2 to 15 carbon atoms, R.sup.4 is alkyl of not more than 6 carbon atoms, X is halogen, n is 1, 2 or 3 and r is 0, 1, 2 or 3, and(B.sub.3) from 0 to 48% by weight of further comonomers.
摘要:
Thermoplastic molding materials contain, as essential components,(A) from 2 to 97.9% by weight of a nylon,(B) from 2 to 97.9% by weight of a polyaryl ether sulfone(C) from 0.1 to 30% by weight of a polymeric component having hydroxyl groupsand in addition(D) from 0 to 50% by weight of a rubber impact modifier and(E) from 0 to 60% by weight of reinforcing fillers.
摘要:
A partially crosslinked polymer composition having a melt flow index of from 0.1 to 50 g/10 min at 230.degree. C. under a weight of 2.16 kg and comprisinga) a polymer comprising from 25 to 95% by weight of polypropylene and 5 to 75% by weight of a propylene copolymer with copolymerized C.sub.2 -C.sub.10 -alk-1-enes, the comonomer content being from 1 to 45% by weight, based on the total polymer,b) an organosilane compound of the formula (I)A.sub.4-n SiR.sub.n (i) where A are identical or different acrylates or methacrylates or vinyl groups, R are identical or different C.sub.1 -C.sub.8 -alkoxy or C.sub.1 -C.sub.8 -acetoxy groups, and n is 1, 2 or 3, obtainable by reacting the polymer a) with the organosilane compound b) in the presence of a free-radical initiator and in the presence of a condensation catalyst at from 180.degree. to 280.degree. C., and at from 1 to 100 bar and at a mean residence time of the reaction mixture of from 0.2 to 10 minutes,has, in particular, high notched impact strength, increased puncture resistance and improved weld line strength.
摘要:
Polypropylene/polyamide molding compositions, suitable in particular for producing moldings, advantageously consist of, in each case based on 100 parts by weight of the molding composition,A) from 10 to 89.5 parts by weight of one or more polypropylene homopolymers and/or copolymers,B) from 10 to 89.5 parts by weight of one or more polyamides,C) from 0.5 to 30 parts by weight of an ethylene copolymer as adhesion promoter,D) from 0 to 30 parts by weight of an impact modifier andE) from 0 to 60 parts by weight of a reinforcing agent and/or additive,the ethylene copolymer (C) advantageously being polymerized from, in each case based on (C),a) from 50 to 98% by weight of ethylene,b) from 1 to 45% by weight of one or more alkyl (meth)acrylates having 1 to 8 carbon atoms in the alkyl, but not tert-butyl (meth)acrylate, andc) from 1 to 40% by weight of one or more further monomers containing in bonded form a group which is reactive toward the polyamide, for example a carboxyl, carboxylic anhydride, tert-butyl carboxylate, sulfo, sulfonyl, oxazolinyl or epoxide group,and are produced by melting together components (A) to (C) and any (D) and/or (E) at from 200.degree. to 300.degree. C.
摘要:
Novel polypropylene-polyamide molding compositions which comprise, based on 100 parts by weight of the molding compositions,A) 10 to 89.9 parts by weight of one or more polypropylene homopolymer and/or copolymer,B) 10 to 89.9 parts by weight of one or more polyamide,C) 0.1 to 5.0 parts by weight of one or more olefinically unsaturated carboxylic acid and/or one or more olefinically unsaturated carboxylic acid derivate,D) 0 to 3.0 parts by weight of an impact modifier, andE) 0 to 60.0 parts by weight of a reinforcing agent and/or additive,are prepared by melting together components (A), (C) and, if desired (D) at from 200.degree. to 300.degree. C. in a first reaction step and then, in a second reaction step, introducing component (B) and, if appropriate, components (D) and/or (E) into the modified melt obtained, and melting together the components.The molding compositions obtained are used for the production of moldings.
摘要:
A recyclable bumper system based on polypropylene comprises a bumper support A of glass fiber reinforced polypropylene, an energy-absorbing foam core B of foamed polypropylene and a tough shell C of EP-rubber modified polypropylene which may be coated, and can be recycled by mechanical comminution, extrusion and granulation, resulting in granules from which injection moldings having good mechanical properties can be produced.
摘要:
Thermoplastic molding compositions contain as essential components(A) from 1 to 90% by weight of a polycarbonate,(B) from 1 to 90% by weight of a polyester,(C) from 1 to 90% by weight of a polyamide,(D) from 0.5 to 30% by weight of a polymeric component having hydroxyl groups and in addition(E) from 0 to 30% by weight of an impact-modifying rubber and(F) from 0 to 60% by weight of a fibrous or particulate filler.
摘要:
This invention relates to a process for the manufacture of graft copolymers based on methyl methacrylate polymers. The methyl methacrylate polymer is reacted with a high molecular weight organic compound containing at least one alkylene oxide unit having an alkali metal alcoholate end group, during which reaction transesterification occurs to eliminate alkali metal methoxide and cause chain joining. The graft copolymers may be used for the production of shaped articles or coating compositions and as additives, antistatic agents or adhesion promoters for plastics materials.