Abstract: A polyamide resin composition comprises melamine cyanurate with or without a copper compound, an alkali metal halide, a tin compound, a bisamide compound or a bisureido compound.

Abstract: Noninflammable textile fibers and the process of producing such fibers, which fibers are composed of an olefinic polymer containing in combination: a hydrated alumina; a halogenated organic compound; and a fire-retardant compound selected from the group consisting of ammonium polyphosphate and zinc borate.

Abstract: Copolycondensation products of .beta.-haloalkyl phosphates and dialkyl phosphonates are useful fire retardant agents. The products are prepared by heating the starting materials at a temperature of about 110.degree. to 250.degree. C., preferably in the presence of a nucleophilic catalyst, until at least one mole of alkyl halide per mole of phosphonate is driven off. Preferred are copolycondensation products obtained by substantially complete removal of halogen as alkyl halide.

Abstract: Isopropylidenedicyclohexylene esters of 2,2,6,6-tetramethylpiperidine-4-carboxylic acid are disclosed as well as their use as light stabilizers for thermoplastic polymers such as polypropylene.

Abstract: New derivatives of N,N'-4-piperidyl-tetraalkyl-substituted alkylene diamines are disclosed. These new compounds are useful for stabilizing thermoplastic polymers, in particular polyolefins, against sunlight, heat and oxidation. A process for producing the new compounds is also disclosed, as well as the use thereof as stabilizers of polymers and polymeric compositions.

Abstract: An ultraviolet light sensitive polymer composition wherein resistance to photodegradation is enhanced by the inclusion therein of a stabilizer polymer having structural units corresponding to the following formula ##STR1## wherein R.sub.a, R.sub.b, and R.sub.

Abstract: Chlorine-containing thermoplastics, especially polyvinyl chloride, can be stabilized against thermal degradation by incorporating therein synergistic mixtures consisting of (a) a mercaptan of the formula R(CH.sub.2 SH).sub.2, wherein n is 2 to 4 and R represents a n-valent aromatic radical, and (b) an epoxidized plasticizer.

Abstract: Chlorine-containing thermoplastics, containing a pyrrole of the formula I ##STR1## in which R.sub.1 is hydrogen, alkyl, cycloalkyl, aryl, alkoxycarbonylmethyl, free or esterified .alpha.-hydroxyalkyl, free or esterified .alpha.-hydroxycycloalkylmethyl, free or esterified .alpha.-hydroxyaralkyl, alkoxymethyl, alkylthiomethyl, aryloxymethyl, arylthiomethyl, cycloalkoxymethyl, cycloalkylthiomethyl, aralkoxymethyl, aralkylthiomethyl, alkoxy, alkylthio, cycloalkoxy, cycloalkylthio, aralkoxy, arylalkylthio, aryloxy, arylthio, halogen, mercapto, mercaptomethyl or hydroxyl, R.sub.2 is hydrogen, alkyl, cycloalkyl, aryl, free or esterified .alpha.-hydroxyalkyl, in which the alkyl moiety together with R.sub.1 can be alkylene, or free or esterified .alpha.-hydroxycycloalkylmethyl, free or esterified .alpha.

Abstract: The invention relates to a process for rendering flame-resistant the thermoplastic aromatic polycarbonates prepared by a solution process, characterized by dispersing an aqueous solution of salt-like flameproofing agent in a washed and neutral polycarbonate/organic solvent system.

Abstract: A fire-retardant and radiation resistant molded resin product is prepared by blending a resin with a halogenated acenaphthylene compound of the formula: ##STR1## wherein X is chlorine or bromine and R is alkyl, alkoxy or alkylester of 1 to 4 carbon atoms such that when m is 0, n is an integer of 2 to 8; when m is an integer of 1 to 4, n is an integer of 2 to 7 and n+m is .ltoreq.8 and when m is more than 2, R may be the same or different; and, after molding said blend, generating free radicals within said blend.

Abstract: Oxazolines having at least one 3,5-dialkyl-4-hydroxyphenyl alkanoie acid ester substituent are provided. Such oxazolines are found to be useful as antioxidants in organic substances normally susceptible to oxidative deterioration.

Abstract: An additive composition for improving the color stability of a vinyl chloride polymer stabilized with environmentally acceptable stabilizers comprises a 1,3-diketone or 1,3-diketone Na, K., Li, Mg, Zn, Ba, Ca, Sn, or Sr salt and an organic phosphite having the formula ##STR1## wherein R.sub.1 is a phenyl, cycloalkyl, t-butyl, or t-amyl group, R.sub.2 and R.sub.3 are each a hydrogen atom or phenyl, cycloalkyl, or an alkyl group having one to five carbon atoms, R.sub.4 is a hydrogen atom or a methyl group, and each of R.sub.5 and R.sub.6 independently is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms, an aryl group having 6 to 12 carbon atoms, or an ether-substituted group having 3 to 80 carbon atoms and 1 to about 40 ether oxygen atoms.

Abstract: A flame retarded polyolefin polymer containing from about 1 to about 40 percent (by combined weight of polymer and flame retardant) of the compound of the formula ##STR1## wherein m and n are integers independently selected from the group consisting of 2, 3, 4, and m plus n equal 6.

Abstract: Novel esters of pentavalent phosphorus acid having the formula ##STR1## wherein R and R'are haloalkyl containing from 2 to 6 carbon atoms and from 1 to 6 halogen atoms; n is an integer of from 1 to 3; each X is independently selected from hydrogen, halogen, alkyl, or hydroxyl, provided that at least one X is hydroxyl. The above compounds are effective reactive flame retardants in polyurethane and polyester polymeric compositions.

Abstract: A new composition is described comprising a synthetic, artificial or natu polymer and a flameproofing additive imparting self-extinguishing properties to the composition and to the articles, such as moulded, spun or woven articles, made therefrom, said additive being the product of the reaction of melamine with acidic compounds, such as organic acids or anhydrides and inorganic acids. The process for making said additive by said reaction, preferably in the presence of water, is also described. The said composition may be made by introducing said additive in any manufacturing stage, viz. to the monomers (if the polymer is a synthetic one), to the molten polymer, to polymer solutions such as viscose dope, to polymer chips during extrusion, or to finished products e.g. by applying a finish to fabrics.

Abstract: Flame retardant poly(butylene terephthalate) compositions are prepared by incorporating into the polymer a combination of a polymeric pentaerythrityl phosphonate and melamine pyrophosphate.

Abstract: Vinyl aromatic polymer compositions contain a flame-retarding amount of 1,1,2,3,4,4-hexabromobutene-2.

Abstract: A method for improving the thermal stability of polymer of ethylene having vinyl unsaturation in which the polymer is admixed with a stabilizing amount of a silane compound represented by the formulae R.sub.2 SiA.sub.2 and R.sub.3 SiA' in which each R is the same or different and is selected from aryl, alkaryl, or aralkyl groups containing from 6 to about 24 carbon atoms, each A is the same or different and is selected from hydrogen, azido, halogen, hydroxy, alkoxy groups in which the alkyl radical contains from 1 to about 10 carbon atoms, and alkenyl of 2 to 6 carbon atoms and one A can be lower alkyl of 1 to 6 carbon atoms with the other A selected from among azido, halogen, hydroxy, and alkoxy, lower alkyl and alkenyl as described above, and A' is selected from among halogen, hydrogen and hydroxy groups. The composition of matter produced thereby. A composition of matter containing a polymer of ethylene and a thermally stabilizing amount of a silane represented by the formulae R.sub.2 SiA.sub.2 and R.sub.

Abstract: This invention is directed to a process for stabilizing halogenated polymers by the addition of effective amounts of at least one aromatic triazole. More particularly, the invention is directed to the addition of at least one aromatic triazole to halogenated polymers which contain zinc ions.

Abstract: Filled polyolefin compositions having improved thermal stability characteristics are formed by incorporation therein of an effective amount for improvement of such a characteristic of a composition comprising a substantially neutral lower alkoxylated alkyl acid phosphate ester. In certain filled polyolefin compositions the phosphate ester composition also results in color improvement.