Abstract: Certain hydroxy alkanoate polymers, such as 3-hydroxybutyrate polymers, when obtained by solvent extraction from fermentation masses, can have long cycle times during thermal processing due to a low rate of crystallization. A combination of (a) an organophosphonic or organophosphoric acid or ester with (b) an oxide, hydroxide, or carboxylate of a metal of Groups I to V is an effective nucleating agent.

Abstract: Flame-resistant molding compounds of polycarbonate, polyalkylene terephthalate, graft polymer, fluorinated polyolefine and phosphorus compound can be worked up into moulded products which have a particularly advantageous combination of joint line strength, dimensional stability under heat and toughness.

Abstract: Compositions comprising a polyphenylene ether and, optionally, a styrene resin, an aromatic phosphate, phosphonate or phospine oxide, an aromatic halogen compound and an impact modifier comprising a diene polymer have excellent flame retardant properties during large scale flammability tests. The compositions will tolerate large amounts of aromatic halogen compound without discoloration and processing difficulties. In comparison with compositions of the present state of the art, peak burn temperatures are reduced, smoke is less dense, and flaming drips are eliminated in large as well as small scale burn tests.

Abstract: A mixture for stabilizing polyurethanes contains(a) an amine of the formula I ##STR1## (b) a mixture of the benzotriazoles II and III ##STR2## in which n is chosen so that the mean molecular weight of the mixture is greater than 600, and(c) .alpha.-tocopherol, if necessary mixed with tris-(nonylphenyl) phosphite, and polyurethanes contain from 0.005 to 5.0% by weight, based on the material to be stabilized, of this mixture.

Abstract: Coherent thermoplastic aggregates with very high content of pulverized mineral materials, composed of the said materials, of polyolefin polymers and/or copolymers, and possibly also of various familiar adjuvants, characterized by the fact that, in order for them to have both a volumetric mass close to or at most equal to the theoretical volumetric mass of the pulverized mineral substances entering into their composition and an excellent compatibility with redispersion polymers, the polymers and/or copolymers entering into the composition of the said aggregates in presence of a fluidizing agent are chosen within the group of thermoplastics with melting and/or softening point at least equal to 60.degree. C. and index of fluidity at least 50 (measured according to the standard ASTM D 1238) of the polyolefin type, other than those containing a polar monomer.

Abstract: Flame-resistant, thermoplastic polyamide moulding materials which contain 0.01-4% by weight of polyphenylene oxides as flameproofing agent and which are prepared by mixing the components in the melt.

Abstract: A hot melt adhesive composition possessing color stability and resistance to heat degradation, oxidation and skin formation. The adhesive composition contains a block copolymer prepared using a bromide based coupling agent, a tackifying resin, and an effective amount of a stabilizer composition. The stabilizer composition contains a thio compound, a phenolic antioxidant, a tris-(nonylated phenyl) phosphite, and an aliphatic compatible epoxy compound. Optionally, the adhesive composition may also contain a plasticizer and/or a petroleum derived wax.

Abstract: The present invention provides thermoplastic flame-retardant moulding compositions containing halogen-containing copolycarbonates, styrene/maleic anhydride copolymers, phosphorus compounds of the formula (I) ##STR1## and tetrafluoroethylene polymers and, if desired, further known additives.

Abstract: A gumming solution is disclosed for use in the burning-in of irradiated and developed offset-printing plates. The gumming solution contains (a) water, (b) at least one hydrophilic polymer, and (c) at least one component derived from an organic acid. Component (b) comprises, for example, N-polyvinyl-pyrrolidone-(2) or polyacrylic acid, and component (c) comprises a water-soluble organic carboxylic acid, sulfonic acid, or phosphonic acid which has at least two acid functions and which is selected from the group consisting of benzene carboxylic acids, benzene sulfonic acids, benzene phosphonic acids, and alkane phosphonic acids, or one of the salts thereof (for example, disodium-benzene-1,3-disulfonate, mellitic acid, or methane-diphosphonic acid.) A process for the production of an offset-printing plate, using the aforesaid gumming solution in the burning-in of the plate, is also disclosed.

Abstract: A composition and method for inhibiting corrosion in industrial cooling waters which contain hardness and have a pH of at least 8, which composition comprises a water-soluble organic phosphonate capable of inhibiting corrosion in an aqueous alkaliine environment and a hydrocarbon polymer containing an N-substituted acrylamide polymer with an amide structure as follows: ##STR1## where R.sub.2 is hydrogen or methyl, R.sub.1 is a hydrogen or an alkyl and R is alkylene or phenylene, and X is sulfonate, (poly)hydroxyl, and combinations thereof.

Abstract: The present invention relates to flame-retarding, thermoplastic polycarbonate moulding materials of high impact strength consisting of halogen-containing polycarbonates, copolymers formed from styrenes and (meth)acrylonitrile, phosphorus compounds of the formula (I) ##STR1## tetrafluoroethylene polymers and small amounts of graft polymers and, if appropriate, effective amounts of stabilizers, pigments, lubricants, mould release agents and/or antistatic agents, and to a process for the preparation thereof.

Abstract: A method for improving a production characteristic of flame-retardant polyurethanes. The characteristic may be selected from the group consisting of(1) processability;(2) scorch;(3) odor; and(4) flame-retardant efficiency.The method comprises incorporation into a polyurethane an amount effective to reduce combustibility of a haloether phosphorate flame-retardant under conditions sufficient to improve said characteristic. Also, the flame-retardant polyurethane composition such as prepared by said method. Preferably, the polyurethane is a foam, especially a flexible foam and most especially flexible slabstock foam.

Abstract: This invention relates to flame retardant phenol aldehyde foams which have a k value below 0.020 W/mk. The foams have as flame retardants a blend of a halosubstituted diphenyl oxide and an organic phosphorus compound. The feature of the invention is that unlike conventional flame retardants, the blend now used does not adversely affect the low k value i.e. the low thermal conductivity of the foam.

Abstract: The invention provides polyurethanes and polyisocyanurate having incorporated therein a flame retardant amount of a salt formed by reaction between dimethyl methyl phosphonate, monomethyl methyl phosphonate or methyl phosphonic acid, and a compound of the general formula (I). ##STR1## in which X is O, S or NH, R.sup.1 is H, alkyl with 1 to 4 carbon atoms, alkenyl of up to 4 carbon atoms, CN, CONH.sub.2 or NH.sub.2, R.sup.2 is H, alkyl with 1 to 4 carbon atoms or alkenyl of up to 4 carbon atoms or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a heterocyclic ring of up to 6 carbon atoms which may optionally contain another hetero atom and R is H, an alkyl group with 1 to 8 carbon atoms, an aryl group with 6 to 10 carbon atoms, a cycloalkyl group with 5 to 12 carbon atoms or a heterocyclic group with up to 9 ring carbon atoms, or, together with R.sup.1 forms an alkylene chain of 3 to 10 carbon atoms, or R is a group NHR.sup.3 wherein R.sup.

Abstract: The invention provides salts of methyl phosphonic acid and its mono- or di-methyl ester with certain amines. The salts are useful flame retardant additives for polyurethanes and polyisocyanurates.

Abstract: The present invention relates to a process for the preparation of flame-resistant polycarbonate moulding compositions, which is characterized in that, besides the addition of alkali metal salts, there is incorporation of tetrafluoroethylene polymers as an intimate mixture with halogen-free graft polymers, these intimate mixtures being prepared by coagulation of the appropriate emulsion mixtures, and to the polycarbonate moulding compositions obtainable by the process according to the invention.

Abstract: The addition of small amounts of selected polyamides or polyesters to plasticized, melt extrudable polyvinyl alcohol homopolymer provides a composition with lower permeability to oxygen and other fixed gases.

Abstract: Blends of an aromatic polycarbonate a polyester, a halogenated flame retardant agent and a metal oxide synergist for the flame retardant are made more stable against transesterification reactions during high temperature processing by the inclusion of minor amounts of selected phosphorus-containing compounds, such as phosphorous acid or acid salt.

Abstract: A composition particularly adapted for use in a rotational moulding process is disclosed. The composition comprises polyethylene having a density of 0.920-0.970 g/cm.sup.3 and a melt index of 10-35 dg/min., 0.3-1.3% by weight of a bis(tert. alkyl peroxyalkyl) benzene, 0.2-1.5% by weight of a co-curing agent selected from triallyl cyanurate, triallyl isocyanurate and 1,2-polybutadiene, 0.01-0.05% by weight of a hindered phenolic antioxidant and 0.01-0.2% by weight of a secondary antioxidant. The preferred secondary antioxidant is tris di(tert.-butyl phenyl) phosphite. The composition may be used in for example, the moulding of tanks, barrels, containers and the like.

Abstract: The invention provides a novel organopolysiloxane-containing aqueous emulsion composition which, upon removal of water by drying at room temperature, can give a cured rubbery elastomer having excellent mechanical properties and exhibiting strong adhesion to the substrate on which it has been cured. The inventive composition is prepared by blending (A) an aqueous emulsion of an organopolysiloxane having silicon-bonded hydroxy groups and emulsified in water by use of an anionic surface active agent, (B) a mixture of a reaction product of a carboxylic acid anhydride with an amino-functional organosilane and a colloidal silica in the form of an aqueous suspension and (C) a curing catalyst in limited proportions.

Abstract: The present invention relates to polycarbonate articles and films characterized by their antistatic properties comprising polycarbonate resin and alkali, or alkali earth, salts of specific aromatic sulfonic acids, specific aromatic phosphonic acids or aromatic partial phosphoric acid esters.

Abstract: The invention relates to a fire-resistant synthetic resin composition containing a polycarbonate, more specifically a bisphenol A derivative, a phosphorous fireproofing additive derived from phosphonic acid, and possibly other additives and/or fillers.The fireproofing additive is a Li, Na or K hemiester of a phosphonic acid derived from an aromatic or cycloaliphatic hydrocarbon, or from a polynuclear aromatic compound, and is added at the rate of 0.01 to 0.4 weight % in relation to polycarbonate. This small amount of additive improves the fire-resistant properties of the polycarbonate, without affecting its mechanical properties.

Abstract: A polyphenylene ether resin composition having improved heat stability, said composition comprising a polyphenylene ether resin matrix, and dispersed therein, a phosphonic acid or its derivative of the formula ##STR1## wherein R.sub.1 represents an unsubstituted or substituted phenyl or naphthyl group, or a linear or branched alkyl group with 1 to 18 carbon atoms, or a group of the following formula (a) ##STR2## R.sub.2 and R.sub.3 are identical or different and each represents hydrogen atom, a metal, an unsubstituted or substituted phenyl group, or an alkyl group with 1 to 10 carbon atoms; and R.sub.4 is a divalent hydrocarbon group with 2 to 10 carbon atoms.

Abstract: New N,N'-di-(hydroxy-phenyl) derivatives of piperazine 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 polymeric compositions stabilized with said new compounds.

Abstract: The invention relates to plastics moulding compounds which have been flame-proofed with organic chlorine- or bromine-containing compounds, said moulding compounds containing at least one aerosol selected from the group comprising the highly dispersed silicates, highly dispersed alumina, and highly dispersed titanium dioxide, and, optionally, a dibasic or tribasic oxyacid of phosphorus or an ester thereof. These moulding compounds have a reduced corrosive action on contact metals.