Abstract: Unsaturated oligomers and solutions thereof are stabilized with a trisubstituted urea to provide improved storage stability. The stabilized unsaturated oligomer solutions are useful in lactam polymerization processes which yield nylon block copolymers containing unsaturated oligomer segments. The unsaturated oligomers disclosed herein have at least 4 carbons and have pendant thereto at least one hydroxy, amine, epoxy, acyllactam, or acyllactam precursor group.

Abstract: The invention relates to the N-substituted acyl-lactam compound of the formula: ##STR1## where R' is a bivalent cyclic or non-cyclic alkyl, aralkyl, alkaryl or aryl radicalR" a bivalent radical having the following general formula ##STR2## wherein R'" is H, alkyl, cycloalkyl, aryl, alkaryl or aralkyl,R.sup.iv is H, alkyl, cycloalkyl, aryl, alkaryl or aralkyl whereR'" and R.sup.iv may jointly form a substituted or non-substituted cycloalkyl residuen is 0 or 1(-L) represents a non-opened lactam ring andx a number>1.It has been found that this group of compounds is very suitable as activator in the preparation of nylon polymers, more specifically in the so-called RIM (Reaction Injection Moulding) or RRIM (reinforced RIM) systems, in which it is highly essential for the polymerization to take effect within a very short time.

Abstract: Resin compositions comprising two resins A and B, wherein resin A consists of the reaction product of an epoxidized fatty acid ester of a polyvalent alcohol and a monovalent carboxylic acid and resin B consists of a carboxylic acid modified fatty acid ester of a polyvalent alcohol.These resins compositions are suitable for linoleum manufacture.

Abstract: The invention relates to compositions containing 80-30 wt.-% of bismaleimide-compounds, 5-60 wt.-% maleimide-amide compounds and 1-10 wt.-% of a maleic an hydride derivative. The invention also relates to the preparation of such compositions as well as the homogeneous curable compositions, in a suitable solvent, comprising bismaleimide/maleimide-amide/maleic an hydride. The obtained copolymers show good chemical resistance and a high heat distortion temperature.

Abstract: Disclosed are lactam polymerization initiators comprising at least two lactam terminal groups of the formula: ##STR1## wherein Q is a lactam residue containing a C.sub.3 to C.sub.11 alkylene group and is bonded to a carbonyl through the nitrogen atom of the lactam; A is an aliphatic or aromatic hydrocarbyl or hydrocarbyl ether group; m is 0 or 1; when m is 0, n is 0 or 1 and p is 1; when m is 1, n is in the range of 1 to 3 and p=n; and an elastomeric backbone derived from a telechelic polyamine containing at least two primary or secondary amine groups. Also disclosed are a process for forming the same; nylon block copolymers produced therefrom; and a process for the polymerization thereof.

Abstract: Unsaturated oligomers and solutions thereof are stabilized with a trisubstituted urea to provide improved storage stability. The stabilized unsaturated oligomer solutions are useful in lactam polymerization processes which yield nylon block copolymers containing unsaturated oligomer segments. The unsaturated oligomers disclosed herein have at least 4 carbons and have pendant thereto at least one hydroxy, amine, epoxy, acyllactam, or acyllactam precursor group.

Abstract: The invention relates to a thermoplastic moulding compound consisting of:A. at least 95% (wt) of a copolymer consisting of1. 50-95 moles % styrene and/or .alpha.-methylstyrene2. 50-55 moles % unsaturated dicarboxylic anhydrideB. at most 5% (wt) of an phosphite with the general formula of ##STR1## where R represents hydrogen or the residue of an alkyl, cycloalkyl, aryl, alkaryl or aralkyl, while the R substituents need not to be the same and may contain heteroatoms.It has been found that additions of these phosphites to SMA-containing moulding compounds checks the decomposition of SMA, prevents the moulding compound from getting stuck to the processing equipment and consequently reduces corrosion to a high degree.

Abstract: A composition containing lactam functional materials, which are useful in the preparation of nylon block polymers, selected from the group consisting of: ##STR1## wherein, Q is ##STR2## with Y=C.sub.3 -C.sub.11 alkylene; b is an integer equal to 2 or more;R.sub.1 is an alkyl, aryl, aralkyl, alkyloxy, halogen, aryloxy, or aralkyloxy group;Z is a segment of: (1) a polyether, provided said polyether is not solely polyarylene polyether; (2) a polyester containing polyether or polymeric hydrocarbon segments (3) a hydrocarbon; (4) a polysiloxane; or (5) combinations thereof.

Abstract: A composition containing acid halide functional materials, which are useful in the preparation of nylon block polymers, selected from the group consisting of: ##STR1## wherein, X is a halogen;b is an integer equal to 2 or more;R.sub.1 is an alkyl, aryl, aralkyl, alkyloxy, halogen, aryloxy, or aralkyloxy group; andZ is a segment of: (1) a polyether, provided said polyether is not solely polyarylene polyether; (2) a polyester containing polyether or polymeric hydrocarbon segments (3) a polysiloxane; or (4) combinations thereof.

Abstract: A nylon block copolymer prepared from acyl lactam functionalized materials and lactam monomer and cross-linked by a polyfunctional amine.

Abstract: The invention relates to compositions containing 80-30 weight % of bismaleimide-compounds, 5-60 weight % maleimide-amide compounds and 1-10 weight % maleic anhydride derivative. The invention further relates to the preparation of such compositions and to homogeneous curable compositions comprising bismaleimide/maleimide-amide/maleic anhydride compositions according to the invention. The obtained copolymers show good chemical resistance and a high heat distortion temperature.

Abstract: The invention accords to a laminate at least consisting of a first layer from a mixture of at least a propylene polymer and an ethylene-vinylalcohol copolymer and a second layer from at least one propylene polymer, the first layer at least consisting of a mixture of 60-99 parts by weight of a substantially crystalline propylene polymer and 1-40 parts by weight of an ethylene-vinylalcohol copolymer, the second layer at least consisting of a substantially crystalline propylene polymer, the said ethylene-vinylalcohol copolymer having a melting temperature at atmospheric pressure which is at most equal to and not more than 30K lower than the melting temperature at atmospheric pressure of the one of the substantially crystalline propylene polymers used having the highest melting temperature, and the laminate having been subjected to multi-axial stretching to a degree of at least twice in at least 2 directions at a temperature which at most equals the melting temperature of the one of the substantially crystalline

Abstract: Process for the preparation of an isocyanurate-compound containing isocyanate groups by trimerisation of a diisocyanate in the presence ofa compound having the formula ##STR1## in combination with an organic base, or a compound having the formula ##STR2## where R and R' are chosen from a hydrocarbon radical with 1-10 carbon atoms,--O--R.sub.1, with R.sub.1 being a hydrocarbon radical with 1-10 carbon atoms, andH.

Abstract: This invention provides a catalyst composition suitable for the gas phase oxidation, ammoxidation and oxidative dehydrogenation of olefins to unsaturated aldehydes, unsaturated nitriles and dienes respectively. The catalyst composition comprises, as active catalyst component, a solid solution of Fe, Sb and Ti oxides which has a rutile type crystal structure which is present in the composition in an amount of at least 80 wt. %, and which is represented by the empirical formula Fe.sub.x Sb.sub.y Ti.sub.z O.sub.w, wherein, for x=1, y is in the range of 0.5 to 10, z is in the range of 0.16 to 209 and w represents the number of oxygen atoms corresponding to the oxides of the above elements. The catalyst component is prepared by co-precipitating metal oxides from solutions of corresponding metal salts followed by calcination at 600.degree.-1000.degree. C. of the washed and dried precipitate.

Abstract: Process the recovering caprolactam from the residue remaining following the distillation, under reduced pressure, of impure caprolactam obtained by rearrangement of cyclohexanone oxime with sulphuric acid or oleum, by distilling the residue under reduced pressure whereby a caprolactam-containing distillate is obtained; hydrogenating the caprolactam containing distillate in an aqueous medium to obtain a hydrogenation product; and recovering caprolactam from the resulting hydrogenation product.

Abstract: Disclosed is a polymer composition based on a polycarbonate and a graft copolymer of a vinyl aromatic compound and an unsaturated nitrile compound on a rubber-like polymer. Good flow properties are achieved by a composition consisting essentially of:A. at least one graft copolymer obtained by polymerizing 40-80 parts by weight of a monomer mixture, which mixture consists of:(1) 20-40 weight % of acrylonitrile, and(2) 60-80 weight % of styrene, in the presence of 10-25 parts by weight of a hydrocarbon rubber,B. at least one graft copolymer obtained by polymerizing 75-90 parts by weight of a monomer mixture, which mixture consists of:(1) 20-40 weight % of acrylonitrile, and(2) 60-80 weight % of styrene, in the presence of 10-25 parts by weight of a hydrocarbon rubber,C. a copolymer obtained by polymerizing 20-40 parts by weight of acrylonitrile with 60-80 parts by weight of styrene, andD.

Abstract: A process is disclosed for preparing a titanium catalyst component useful for homopolymerizing 1-alkenes and for copolymerizing 1-alkenes with each other and/or with ethylene, consisting essentially in grinding a titanium halide compound/electron-donor complex with a magnesium aluminum halide obtained by precipitation from an organic solvent.In the process the ground product is first washed with a washing liquid containing a solvent for the aluminum halide/electron-donor complex which forms during the grinding process and by preference at least one alcohol, the molar ratio between alcohol and titanium in the ground product ranging between 50:1 and 1:20, and then the washed product is exposed to a liquid titanium halide compound.With this procedure, it is possible to obtain a titanium component which imparts to the polymerization catalyst an excellent stereospecificity along with a very high activity, and with which it is possible to obtain polymers, e.g.

Abstract: The invention relates to a process for the preparation of derivatives of dichloroacetic acid esters, by reaction of a glyoxylic acid ester having the general formula R.sub.1 --CO--COOR.sub.2, wherein R.sub.1 represents an optionally substituted aryl or heteroaryl group and R.sub.2 an alkyl, cycloalkyl or aryl group, with phosphoruspentachloride in the presence of a dispersant suitable for distributing the phosphoruspentachloride.

Abstract: The invention concerns an N-substituted carbamoyl-lactam compound characterized by the formula: ##STR1## where in the formula: R is a polyol radical from a polyol having the formula R--(OH).sub.xi, where .sub.xi is an integer.gtoreq.2R' is an alkyl, whether or not cyclic aralkyl, alkaryl or aryl group, .sub.yi is an integer>0,(--L) is an unopened lactam ring and(--L--) is an opened lactam block. The compoundsare highly suited for use as activators in preparing nylon block copolymers.

Abstract: The invention concerns a simple, reliable and reproducable process for the preparation of an N-substituted carbamoyl lactam compound, for example of the following formula: ##STR1## where: R is a polyol originating from a polyol having the formula R-(OH).sub.xi, where.sub.xi is an integer.gtoreq.2R' is an alkyl, aralkyl, alkaryl or aryl group, whether or not cyclic,.sub.yi is an integer.gtoreq.0,(--L) is an unopened lactam ring and(--L--) is an opened lactam block.This process is characterized in that a polyol and a lactam blocked polyisocyanate are reacted in the liquid state in the presence of a metal compound catalyst.