Abstract: A description is given of a stabilized aqueous solution of unsaturated quaternary ammonium salt(s) (I), having been obtained by reaction, in the presence of water, of N,N-dimethylaminoethyl (meth)acrylate (II) with a quaternizing agent (III), at least one stabilizing agent having been used in combination with the monomer (II). This aqueous solution contains at least one sequestering agent for metals chosen from diethylenetriaminepentaacetic acid, the pentasodium salt of diethylenetriaminepentaacetic acid, N-(hydroxyethyl)ethylenediaminetriacetic acid and the trisodium salt of N-(hydroxyethyl)ethylenediaminetriacetic acid. ##STR1## R.sup.1 =H or CH.sub.3 ; R=methyl or benzyl; X=Cl, Br or CH.sub.3 --SO.sub.4.

Abstract: A crosslinkable composition of a polymeric thermoplastic and/or elastomeric material which is susceptible to scorching when processed at elevated temperatures, prior to crosslinking, in the presence of a free radical initiator, is protected against such scorching by the incorporation therein of a mixture of at least one hydroquinone compound and a sulfur accelerator. This mixture may also contain at least one monomeric allylic, methacrylic, acrylic or diene type coagent. The mixture exhibits a synergistic effect resulting in improved scorch protection for peroxide cured systems when compared with the protection afforded by the components singly.

Abstract: The invention comprises a curable composition comprising: (i) a blocked reactive component wherein the blocked reactive component is a blocked isocyanate or a blocked isothiocyanate; (ii) a functional compound reactive with the blocked reactive component, the functional compound containing reactive hydrogen.; (iii) a catalyst for promoting the reaction of the reactive component with the blocked functional compound, wherein said catalyst is based on the reaction product of manganese, cobalt., nickel, copper, zinc, germanium, antimony, or bismuth, or the oxides thereof with a mercaptan, or an organic acid, wherein said organic acid is hexanoic, oxalic, adipic, lactic, tartaric, salicylic, thioglycolic, succinic, or mercapto succinic acid, or the reaction product of copper or germanium, or the oxides thereof with a lower aliphatic acid.

Abstract: A glass article, especially of hollow glass, carries a coating resulting from the deposition, in one or two stages, onto the surface of the glass, of at least one monoaminosilane and of at least one lubricating substance such as an optionally oxidized or partially oxidized polyolefin. The coating provides desirable properties of wet and dry abrasion resistance (scratch resistance), substantial invisibility, and adhesiveness for labels. Articles having labels directly attached to said coating are also provided as well as the process for obtaining the desired properties.

Abstract: A coated non-woven material, method of making such material, and disposable absorbent hygiene article are disclosed. The coated non-woven material comprises a base layer made of a non-woven web of fibrous material and at least one layer of a thermoplastic film. The peel strength of the material is equal to or below 98.times.10.sup.-3 kN/m, as measured according to the NFT 76-112 standard, wherein the peeling angle is specified at 180.degree. and the pull speed is specified at 200 mm/mn. In one embodiment, the coated non-woven material is incorporated into a disposable diaper as a liquid-impervious backsheet.

Abstract: This pressure-sensitive adhesive polymer is obtained by emulsion polymerization of the mixture of the following monomers, for a total of 100% by weight: (A) 40 to 95% by weight of at least one (meth)acrylic or vinyl monomer capable of resulting in a homopolymer which has a glass transition temperature lower than or equal to -40.degree. C.; (B) 2 to 50% by weight of at least one (meth)acrylic or vinyl monomer capable of resulting in a homopolymer which has a glass transition temperature higher than or equal to 0.degree. C.; (C) 0.5 to 6% by weight of at least one carboxylic (meth)acrylic monomer; (D) 0 to 5% by weight of at least one (meth)acrylic monomer ethoxylated with 1 to 20 moles of ethylene oxide; (E) 0.05 to 1% by weight of at least one (meth)acrylic or vinyl monomer containing a ureido group; and (F) 0 to 2% by weight of at least one acrylic or vinyl monomer carrying a sulphonate functional group, the said polymer having a glass transition temperature lower than or equal to -25.degree. C.

Abstract: The present invention comprises a curable composition comprising:(i) a blocked reactive component comprising a blocked isocyanate or a blocked isothiocyanate;(ii) a functional compound containing reactive hydrogen;(iii) a triorganotin catalyst for promoting the reaction of the blocked reactive component with the functional compound.The composition may also be admixed with water.The invention also relates to a method for curing a blocked isocyanate or blocked isothiocyanate at a temperature below about 150.degree. C. which comprises combining a triorganotin compound with the blocked reactive component and functional compound and heating at a temperature less than about 150.degree. C. to obtain a cured urethane or thiourethane.

Abstract: High-performance overprint varnishes, well-suited for the protective coating of a wide variety of substrates, e.g., papers, cardboards and packaging materials, include a composite latex and characteristically a polyethylene wax emulsion, the composite latex comprising the copolymerizate of at least one hydrophobic monomer within an aqueous solution of a styrene/maleic anhydride resin, the styrene/maleic anhydride resin having a molecular weight ranging from 500 to 5,000 and an acid number of at most 500, and the amount by weight of the styrene/maleic anhydride resin in the copolymerizate ranging from 5% to 50%.

Abstract: The invention relates to the manufacture of difluoromethane by catalytic gas-phase fluorination of methylene chloride.The operation is carried out in the presence of oxygen at a temperature of between 330 and 450.degree. C. and with a bulk or supported chromium catalyst.

Abstract: A process for the preparation of 245fa is provided, wherein 1233zd is first fluorinated to 1234ze, followed by fluorination of 1234ze to 245fa. 245fa is a known foam blowing agent and refrigerant.

Abstract: To remove the traces of chlorotrifluoroethylene (F1113) which are present in a pentafluoroethane (F125), the F125 is passed through a bed of active carbon.

Abstract: A process for preparing a metal plastic composite comprising prime coating at least a portion of a metal substrate with one or more layers of an adhesion primer powder consisting of a solid thermosetting resin using a conventional powder application technique, heating the thus coated substrate to a temperature sufficient to melt a surface coating powder to be subsequently applied, immersing the thus coated substrate into a fluidized bed of a surface coating powder for a time sufficient to give the thickness of surface coating desired.

Abstract: This invention relates to aqueous emulsions based on acrylic polymers and their use for preparing films to be used in processes of preparation of cathode ray tubes, having filming temperature between about 20.degree. and 40.degree. C. which after drying produce films which, submitted to heating in nitrogen atmosphere, have a weight loss, for films having a thickness of 1-2 mm, and for the following cycle of heating:11.degree. C./minute from 25.degree. to 375.degree. C.,5.degree. C./minute from 375.degree. to 440.degree. C.,isotherm at 440.degree. C. for 45 minutes,respectively of:from 25.degree. to 245.degree. C. lower than 15% by weightfrom 245.degree. to 375.degree. C. from 30 to 70% by weightfrom 375.degree. to 440.degree. C. of 97-99% by weightafter the isotherm at 440.degree. C. the remaining residue is lower than about 0.3% by weight, the curve gradient in the on set point ranging from 0.03 to 0.08 mg/.degree.K., and at 360.degree. C. from 0.12 to 0.30 mg/.degree.K.

Abstract: The invention relates to a packaging comprising a thermoplastic film based on a polymer containing polyamide blocks and polyether blocks, said polymer being permeable to water vapor, to ethylene, to CO.sub.2 and to oxygen, such that the permeability to CO.sub.2 is very much greater than the permeability to oxygen. The invention is particularly useful for making sachets in order to conserve fresh fruit, vegetables or meat.

Abstract: The process consists in mixing, for a period tm less than the period of polymerization, in a micromixer, a flow Fm of monomer(s) to be (co)polymerized and a flow Fa of an initiator system leading to a propagation constant kp(t) greater than or equal to 500 l mol.sup.-1 s.sup.-1 and in injecting, in a polymerization reactor, a flow Fr resulting from the mixing of the flows Fm and Fa, the concentration of monomer(s) in the flow Fr being at least 10% by weight.

Abstract: The process consists in passing the liquid to be purified and a superabsorbent, preferably of polyacrylic type, through a column, the upward speed of the liquid being chosen such that, in the column, the superabsorbent which is merely swollen is in a stationary dynamics regime, whereas the superabsorbent laden with polyvalent ions settles at the bottom of the column. Application to the treatment of the aqueous rinses of articles which have undergone a nickel-plating treatment.

Abstract: Compositions which greatly diminish, or eliminate, unpleasant smells associated with the use of underwear and diapers are described. These compositions are composed of superabsorbent polymers of the polyacrylic type and of certain boron derivatives, in particular sodium tetraborate. The sanitary articles which incorporate these compositions do not develop unpleasant smells, ammoniacal or otherwise.

Abstract: Process for the manufacture of a compound of formula (I) by reaction of at least one (meth)acrylate of formula (II) with a heterocyclic alcohol of formula (III) in the presence of sodium methoxide as catalyst, characterized in that the sodium methoxide is gradually introduced, as a solution, throughout the synthesis: ##STR1## R.sup.1 =hydrogen or methyl; A and B each independently represent a straight or branched hydrocarbon chain having from 2 to 5 carbon atoms; R.sup.2 =C.sub.1 -C.sub.4 alkyl group.

Abstract: Novel thermoplastic polymer alloys adopted for easy conversion, e.g., by injection molding or extrusion techniques, into useful shaped articles having improved mechanical properties, for example, high impact strengths, include a polyamide, e.g., nylon 6 or nylon 12, a thermoplastic elastomer, e.g., ABS, MBS or EPDM, and a polyetheramide, advantageously a polyetheresteramide.

Abstract: In order to regenerate the activity of a catalyst for gas phase fluorination the spent catalyst is treated with chlorine and hydrogen fluoride, at a temperature of between 250.degree. and 450.degree. C.