Abstract: A silicone rubber composition that cures into a highly flame-retardant silicone rubber with excellent electrical insulation characteristics and that does so without sacrificing mechanical strength. The silicone rubber composition comprises:(A) polyorganosiloxane described by average formula R.sub.a SiO.sub.(4-a)/, where R denotes substituted and unsubstituted monovalent hydrocarbon groups and a is a number from 1.95 to 2.05 and having at least 2 silicon-bonded alkenyl groups in each molecule;(B) microparticulate silica;(C) the reaction mixture of(a) a platinum compound and(b) a compound containing a carbon-carbon double bond and a carbon-carbon triple bond;(D) curing agent, and optionally(E) a triazole compound.

Abstract: The present invention relates to novel methods and compositions related to polymer concrete comprising conventional resins with novel additives to prevent shrinking and cracking of the resin, to accelerate curing and to treat fillers. These compositions and methods can be employed to form large objects and objects of irregular shapes.

Abstract: Described is an organosilicon-containing composition suitable for use as an adhesive and capable of rapid curing at low temperature. The composition comprises about 10 to 80 wt. % of an organic compound component and about 20 to 90 wt. % of one of boron nitride or silver. The organic compound component comprises the reaction product of about 40 to 90 wt. % of the reaction product of cyclic olefin and cyclic siloxane and about 10 to 60 wt. % rubber in liquid form.

Abstract: There is incorporated as a stabilizer into a halogen-containing resin a complex hydroxide salt represented by the formula?Al.sub.2 (Li.sub.(1-x).M.sub.x)(OH).sub.6 !.sub.n (A.sup.-n).sub.1+x.mH.sub.2 Owherein A is an inorganic or organic anion, M is Mg and/or Zn, n is a valence number of anion A, m is 0 or positive number, and x satisfies the expression of 0.01.ltoreq.x<1.This complex hydroxide salt causes almost no occurrence of initial coloration when incorporated in halogen-containing resins because a part of lithium ion to enter a vacant site of aluminum hydroxide octahedron layer of the gibbsite structure in the lithium aluminum complex hydroxide salt is substituted for the metal ions of Mg and/or Zn. By substitution of a part of lithium ion for the divalent metal ions, the amount of charge-supplying anion is increased and the thermally stabilizing ability is superior to that of the lithium aluminum complex hydroxide salts.

Abstract: Thermoplastic molding materials which contain from 0.1 to 10% by weight of a compound of a polyvalent metal are suitable for the production of dull moldings having high impact strength.

Abstract: The invention relates to a mixture in powder form and comprising (i) at least one polyamide and (ii) at least one polymer (A) containing hydroxyl functional groups and compatible with the polyamide. The polymer (A) may be an ethylene/vinyl alcohol copolymer. The mixture may be used to coat metal substrates.

Abstract: An article is a liquid or solid mixture of a plurality of particles and a binder. The article may be a paint or a freestanding film. The particles have a composition A?xAl(1-x)Ga!.sub.2 O.sub.4 (.delta.In), wherein A is zinc or cadmium, the value of x is from 0 to 1, and the value of .delta. is from 0 to about 0.2. In the liquid paint mixture, a paint vehicle is also typically present to impart the desired fluidity to the mixture. The solid paint or film made using this material is white, has very low solar absorptance, and may be made electrically conductive by doping the particles with indium or other appropriate dopant.

Abstract: A stabilizer combination, principally for PVC, is described, comprising A at least one zinc carboxylate B at least one compound of the formula ##STR1## in which R.sub.1 to R.sub.6 are as defined in claim 1.

Abstract: Disclosed are ultraviolet light protective agents having the general formula:(Zn.sub.y M.sup.2+.sub.z).sub.1-x M.sup.3+.sub.x O.sub.1+x/2wherein M.sup.2+ is at least one metal selected from the group consisting of Mg, Ca, Ni and Cu; and M.sup.3+ is at least one metal selected from the group consisting of Al and Fe; as well as a sterilizer and a deodorizer which contain the compound of the above formula (I) as an effective component. They are additives to plastics, rubber, cosmetic materials, and paint and also useful as sterilizer or deodorizer, composition components.

Abstract: The present invention is hydrophobic organosilicate-modified silica gels and a method for their preparation. The method comprises two steps, where in the first step an organosilicate-modified silica hydrosol is heat treated in the presence of a strong mineral acid at a pH less than about pH 1 to form an organosilicate-modified silica hydrogel. In the second step the organosilicate-modified silica hydrogel is contacted with an organosilicon compound in the presence of a catalytic amount of a strong acid to effect hydrophobing of the organosilicate-modified silica hydrogel thereby forming a hydrophobic organosilicate-modified silica hydrogel having a surface area within a range of about 100 m.sup.2 /g to 750 m.sup.2 /g as measured in the dry state.

Abstract: A flame retardant polyolefin compound having low smoking and toxicity comprising 100 parts by weight of polyolefin resin, 100 to 150 parts by weight of a flame retardant, and 2 to 10 parts by weight of zinc stannate as a flame retardant auxilliary agent. The flame retardant polyolefin compound preferably uses a composite metal hydroxide as the flame retardant.

Abstract: A method and composition for detackifying or coagulating and flocculating waterborne and mixed waterborne/solventborne paints in paint spray booth water. Aluminum chlorohydrate and a tannin containing polymer, preferably in an aqueous solution, are added to the paint spray booth water to detackify or coagulate and flocculate the paints.

Abstract: Disclosed are compositions which can be used to form tamper-proof coatings on electronic devices. These compositions contain a silica precursor resin and a filler which reacts in an oxidizing atmosphere to liberate heat. Such compositions form coatings which, when oxidized by techniques such as plasma etching, wet etching, or cross-sectioning, liberate heat which causes destruction of the underlying substrate and, thus, inhibits further examination.

Abstract: A crystalline propylene polymer composition having improved resin flowability and processability, having remarkable resistance to color development (pinking) and excellent anti-rust property and heat stability, and comprising 100 parts by weight of a crystalline propylene polymer, 0.01 to 1 part by weight of an aromatic peroxide and 0.001 to 1 part by weight of a hydrotalcite compound of the formula (1),(Mg.sub.y Zn.sub.z).sub.1-x Al.sub.x (OH).sub.2 (A).sup.n-.sub.x/2 .multidot.mH.sub.2 O (1)wherein (A).sup.n- is an anion having a valence of n, x, y and z are numbers satisfying y+z=1, 0.ltoreq.y.ltoreq.0.9, 0.1.ltoreq.z.ltoreq.1 and 0.2.ltoreq.x.ltoreq.0.8, and m is 0 or a positive number.

Abstract: The present invention relates to novel compositions useful, for example, in water-based paints. The compositions contain a moisture sensitive luminescent substance (for example a phosphorescent substance having increased brightness and longer lasting afterglow) and a polyurethane resin which is water miscible or soluble, and which imparts moisture stability to the luminescent substance. As a result, this novel composition when used in, for example, water-based highway paints imparts an extended road surface life, and is environmentally friendly because it does not contaminate the surrounding environment with organic hydrocarbon products via vaporization or runoffs. In addition this paint composition may be used both indoors and outdoors for nighttime marking.

Abstract: The invention relates to a coating composition for PVC sections, based on a polymeric vehicle, a crosslinking agent, and a thermoplastic resin powder. The coating composition is particularly useful for coating PVC sections for windows, shutters, and doors. PVC joinery coated with the composition of the invention has exceptional impact strength and resistance to abrasion, friction, and inclement weather.

Abstract: A semiconductor device obtained by encapsulating a semiconductor element with a thermosetting resin composition comprising a thermosetting resin (Component I) and a hardener (Component II) having the following components III and IV incorporated therein. The semiconductor device is thus provided with a high heat resistance at infrared reflow step and a high flame retardance, showing a drastically enhanced reliability.(III) A metal hydroxide represented by the following general formula (1):n(M.sub.a O.sub.b).cH.sub.2 O (1)wherein M represents a metallic element; a, b and c each represents a positive number; and n represents a positive number of 1 or more, with the proviso that when M.sub.a O.sub.b is repeated, the plurality of M's may be the same or different and that a and b may be the same or different; and(IV) a metal oxide represented by the following general formula (2):n'(Q.sub.d O.sub.

Abstract: An antibacterial resin composition comprising (A) 100 parts by weight of a styrene resin, (B) 0.01 to 30 parts by weight of an antibacterial agent and (C) 0.01 to 30 parts by weight of a compound having a specific functional group, and said antibacterial resin composition is excellent in antibacterial property and surface appearance of molded article and can give a molded article which can be applied to many fields.

Abstract: Organopolysiloxane compositions which are stabilized to heat and can be crosslinked to give elastomers, which as stabilizer combination contain (D) a copper compound in an amount from 1 to 180 ppm by weight calculated as elemental copper and (E) a zinc compound in an amount of from 1 to 180 ppm by weight calculated as elemental zinc, in each case based on the total weight of the organopolysiloxane composition which is stabilized to heat and can be crosslinked to give elastomers, and (F) optionally, organic fatty acid.

Abstract: A polyetheresteramide having good heat resistance, permanent antistatic property and superior compatibility with thermoplastic resins and a resin composition containing the polyetheresteramide are disclosed, wherein the polyetherester-amide consists essentially of a polyamide oligomer with carboxylic chain ends having a number average molecular weight between 200 and 5,000 and a bisphenol compound with oxyalkylene units having a number average molecular weight between 300 and 3,000. Antistatic resin compositions with good antistatic property and heat resistance are obtained from compositions comprising 3 to 40% by weight of the polyetheresteramide and 60 to 97% by weight of thermoplastic resins. The antistatic resin compositions can contain as compatibilizers vinyl polymers having functional groups such as carboxyl and epoxy groups or block polymers containing polyolefin blocks and aromatic vinyl polymer blocks.

Abstract: A polyarylene sulfide resin composition having excellent metal corrosion resistance and excellent mechanical properties is composed of 100 parts by weight of a polyarylene sulfide resin; from 0.1 to 10 parts by weight of a specific metal compound the surface of which has been pretreated with a first alkoxysilane compound; from 0 to 10 parts by weight of a second alkoxysilane compound; and from 5 to 500 parts by weight of an organic filler.

Abstract: The present invention describes in detail new environmentally safe marine vessel hull coating formulations for all outer surfaces of all marine vessel surfaces specifically designed to fully comply with all existing and anticipated environmental regulations. These formulations absolutely prevent water ingress, galvanic corrosion, wood decay, worm ingress, attachment by grass, algae and marine organisms, flex to accommodate to hull motions and protect against impact damages and may last for 20 years of the economic life of the marine vessel. These inventive formulations embody specific encapsulation techniques that allow aluminum and large steel hulls to now use these advanced coating products since they do not contain any toxins or co-toxins thereby eliminating the concern about the existing TBT exemptions.

Abstract: A stable dispersion of a finely divided solid such as a pigment in an organosiloxane composition can be prepared as a homogeneous thixotropic liquid, paste or gel by blending the solid with a finely divided, partially treated silica, a specified class of liquid diorganosiloxane/oxyalkylene copolymers and, as a diluent, at least one liquid organosiloxane oligomer having a density lower than the density of the dispersed solid. The gels and pastes convert to flowable liquids when subjected to shearing forces.

Abstract: A room temperature curable silicone composition, comprising (A) 100 parts by weight of an organopolysiloxane each of both ends of which has one hydroxyl group, (B) 0.2 to 40 parts by weight of at least one compound selected from the group consisting of hydrolyzable silanes having 2 to 4 hydrolyzable groups and their partial hydrolysis-condensation products, (C) 1 to 100 parts by weight of a modified diorganopolysiloxane of which both ends have at least one group selected from the group consisting of a hydrogen atom, a substituted monovalent hydrocarbon group and alkoxy group having 1 to 10 carbon atoms, an unsubstituted hydrocarbon group and alkoxy group having 1 to 10 carbon atoms, and a hydroxyl group and that has a silicon-bonded modifying group made up of a substituted or unsubstituted monovalent organic group with 6 or more carbon atoms, and (D) a filler and a cured product thereof. A cured product good in peeling properties can be obtained.

Abstract: The present invention provides nonflammable silicone rubber compositions which exhibit a superior non-inflammability and a reduced toxicity due to by-products generated during vulcanization and forming processes.

Abstract: A polysilane having an aromatic amino group is doped with an oxidative dopant, typically iodine and ferric chloride, to produce a highly conductive polysilane composition having improved shapability. The composition is easily applicable to form a highly conductive film or coating.

Abstract: A hydrophilic surface-treating aqueous solution and a hydrophilic surface-treating method are provided to form a film which can maintain its hydrophilicity. The hydrophilic surface-treating aqueous solution contains as main components polyglutamic acid, basic compound, and aqueous resin if necessary. This surface-treating solution and method enable the forming of a film on the surface of aluminum series metals which are used for aluminum fins of heat exchangers, and confer the film's anticorrosion properties, superior hydrophilicity and high hydrophilic permanency, while remarkably suppressing an offensive odor.

Abstract: An organopolysiloxane composition contains (A) a both end hydroxyl-blocked diorganopolysiloxane, (B) an inert diorganopolysiloxane, (C) a silane or siloxane having at least three hydrolyzable functional groups, (D) an organosilane having at least two alkoxy groups each attached to a silicon atom and one mercapto group separated from a silicon atom by an alkylene group or a partial hydrolyzate thereof, (E) an organosilane having at least two alkoxy groups each attached to a silicon atom and one amino group separated from a silicon atom by an alkylene group or a partial hydrolyzate thereof, (F) a condensation catalyst, and (G) a fine powder, typically of polycarbonate, having a mean particle size of 0.1-50 .mu.m. The composition is useful as a surface treating agent for cured rubber moldings for imparting non-tackiness, water repellency and lubricity to the rubber surface and forming a long-lasting abrasion resistant coating.

Abstract: There are provided formable compositions which comprise:(A) 25 to 80% by weight of a glass ionomer cement, containing (a) an aluminum fluorosilicate glass, (b) at least one polymeric polyacid with an average molecular weight >500, (c) water and (d) optionally a chelating agent;(B) and 20 to 75% by weight of a fluoride and/or oxide and/or mixed fluoride and/or mixed oxide of heavy metal elements which are essentially insoluble at ambient temperatures in an aqueous solution containing the polymeric polyacid and/or an aqueous solution containing the chelating agent.The compositions are especially well suited as filling materials for dental root canals.

Abstract: A composition for forming transparent conductive films comprises a tin-containing indium oxide (ITO) powder dispersed in a binder solution. The binder solution comprises a mixed organic solvent consisting of at least one polar solvent and at least one non-polar solvent, in which a polymer having a weight-average molecular weight of from 8,000 to 150,000 is dissolved. The polymer contains (a) an acidic functional group in such a proportion that the polymer has an acid number of from 0.5 to 15 mg-KOH/g, or (b) a polyalkylene glycol chain in a proportion of from 0.5% to 40% by weight, or both of (a) and (b) in the molecule. Alternatively, the binder solution comprises an actinic radiation-curable binder, which comprises an acrylate or methacrylate compound containing an acid phosphate group in the molecule. The composition can form, by coating, a transparent conductive film having improved electrical and optical properties.

Abstract: A laser markable composite material which when so marked retains good color contrast after heat aging. The material comprises polytetrafluoroethylene resin, photosensitive filler material and an extrusion aid. The photosensitive material is preferably a metal oxide and has a larger mean particle size than typical pigments. Also disclosed is a sequence of milling, mixing and blending steps which forms the desired composite material.

Abstract: Proposed is a novel face coat composition having improved stability used in the preparation of a shell-like casting mold for a high melting point metal or alloy by the lost-wax mold method by forming a face coat layer on a wax model using the composition and further forming a backup coat layer thereon followed by removal of the wax by melting and calcination of the shell-like mold formed from the layers. The face coat composition comprises a rare earth oxide powder as the refractory constituent and a binder which is a synthetic resin in the form of an aqueous emulsion, a water-soluble organic polymer in the form of an aqueous solution, a sol of an inorganic oxide such as aluminum oxide, silicon dioxide and zirconium oxide or a combination thereof. A small amount of a powder of rare earth glass can be admixed to the composition so that the face coat layer formed from the face coat composition may have still improved properties.

Abstract: Use of an inorganic or organic zinc compound and a terminal epoxide compound, optionally with chalk, gives a high level of stabilization of PVC.

Abstract: A composite metal hydroxide is provided for use as a flame-retardant in a resin or rubber composition. The composite metal hydroxide is a solid solution having the formula (1) Ca.sub.1-x M.sup.2+ x(OH).sub.2. M is at least one member selected from the group consisting of Mg, Mn, Fe, Co, Ni, Cu and Zn and x is in the range of 0.001.ltoreq.x<0.995. Two preferred composite metal hydroxides have the formula (2) Ca.sub.1-x Mg.sup.2+ x(OH).sub.2 wherein x is in the range of 0.001.ltoreq.x<0.995 and the formula (3) Ca.sub.1-x (Mg, Ni, Mn).sub.x (OH).sub.2 wherein x is in the range of 0.001.ltoreq.x<0.995.

Abstract: A stabilized halogen-containing resin composition contains 100 parts by weight of a halogenated polymer of an ethylenically unsaturated monomer, 0.01 to 5 parts by weight of at least one member selected from a perchloric acid-containing hydrotalcite compound and perchloric acid salt, and 0.01 to 10 parts by weight of a hydrotalcite compound prepared by removing crystal water therefrom under heat. The stabilized, halogen-containing resin composition is excellent in heat stability and gives molded articles free from deterioration in color tone.

Abstract: A polyurethane composition excellent in chlorine resistance containing 0.1 to 10% by weight, based on the polyurethane, of hydrotalcite which has water of crystallization and a C.sub.10 -C.sub.30 fatty acid adhered thereto, capable of being stably spun over a long period of time, and exhibiting neither discoloration in the step of tannin solution treatment nor swelling during chlorine immersion treatment.

Abstract: Moldable compositions comprising metallic powder or combination thereof with ceramic powder, mixed an organic binder are disclosed, at least a part of which comprises a synthetic resin component (A) having a heat deformation temperature of 130.degree. C. or higher. The component A may be used in combination with another component (B) having a melting point of 30.degree. C.-100.degree. C., with or without another thermoplastic component (C), having a heat deformation temperature of 13.degree. C. or less. Moldable compositions, comprising metallic and/or ceramic powder mixed with an organic binder comprising a secondary or tertiary amine (D), or combination thereof with a thermoplastic resin (E), are also disclosed.

Abstract: A method for producing colored and exactly spherical fine-grains of polymer by carrying out the suspension and polymerization of ethylenic unsaturated monomers containing a pigment in water under the presence of a suspension stabilizer, wherein an inorganic pigment treated with silane-coupling agent is used as said pigment. According to the present invention, the pigments are homogeneously dispersed in said exactly spherical fine-grains of polymer and a loss of color is prevented.

Abstract: There is disclosed a polyamide resin composition comprising (A) 100 parts by weight of a polyamide (a) composed mainly of a xylylenediamine component and an .alpha.,.omega.-straight chain asphaltic dibasic acid component, or a combination of the polyamide (a) and polyamide 66, (B) 1 to 15 parts by weight of polyamide 12, (C) 0.01 to 5 parts by weight (in terms of copper) of a copper compound, (D) 1 to 15 parts by weight of carbon black, and (E) an alkali metal halide of such an amount that the number of halogen atoms of the alkali metal halide is 0.3 to 4 per one copper atom of the above copper compound. Said polyamide resin composition has an excellent weather resistance, moldability, and mechanical properties, and can be injection-molded.

Abstract: Refillable polyethylene terephthalate (PET) bottles are made by injection stretch blow moulding and comprise a threaded neck of transparent amorphous substantially non-oriented PET; a substantially cylindrical body of transparent biaxially oriented amorphous PET from 0.4 to 0.9 mm thick and an area expansion ratio of at least 7; and a base of transparent amorphous substantially non-oriented or partly oriented PET in which the PET is a polyethylene terephthalate polymer randomly modified by replacing from 1 to 6 mole % of the terephthalate units with units of a chain orientation disrupting aromatic dicarboxylic acid, such as iso-phthalic acid, having an Intrinsic Viscosity of at least 0.75. The polymer particularly includes fine metal particles especially of antimony to reduce the reheat, and optionally includes a level of diethylene glycol residues greater than normally present in PET to improve the blowing performance of the polymer.

Abstract: Polycyclic aromatic group-pendant polysilanes of the following general formula are described.[(R.sup.1 R.sup.2 Si).sub.k (R.sup.3 R.sup.4 Si).sub.m ].sub.nwherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are, respectively, a hydrogen atom or a monovalent hydrocarbon group provided that at least one of R.sup.3 and R.sup.4 is a monovalent hydrocarbon group having a polycyclic aromatic group or a biphenyl group. When the polysilane is doped with an oxidative dopant, the polymer is rendered electrically conductive and has thus wide utility in various fields of photoconductive and electrically conductive materials without involving degradation of the polysilane.

Abstract: A fungiresistant polyorganosiloxane composition comprising(A) 100 parts by weight of a polyorganosiloxane having a viscosity at 25.degree. C. of from 100 to 500,000 cSt, each of both the terminals of which being blocked with a silanol group or an alkoxy group,(B) from 0.1 to 20 parts by weight of an organisilicon compound having on the average more than 2 hydrolyzable groups each bonded to a silicon atom in the molecule,(C) from 0.001 to 25 parts by weight of a benzimidazolylcarbamate compound represented by the formula ##STR1## wherein R.sup.1 represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, a halogen atom, or a nitro group; R.sup.2 represents an alkyl group having from 1 to 4 carbon atoms or an alkoxyalkyl group having from 2 to 4 carbon atoms: and R.sup.3 represents a hydrogen atom, an N-substituted or unsubstituted carbamoyl group or an N-substituted or unsubstituted carbamoyloxy group, and(D) from 0.

Abstract: An adhesive composition containing a chlorinated ethylene/vinyl acetate copolymer and at least one of a phenolic resin and an aromatic nitroso compound as an adhesion-promoting additive. The chlorinated ethylene/vinyl acetate copolymer can be prepared without the utilization of environmentally hazardous chlorinated solvents and provides for adhesive compositions which exhibit excellent adhesion and resistance to adverse environmental conditions.

Abstract: To a silicone rubber adhesive composition comprising (A) a diorganopolysiloxane containing at least two alkenyl groups in a molecule, (B) a diorganohydrogenpolysiloxane having at least two hydrogen atoms directly attached to silicon atoms in a molecule and a viscosity of about 5 to about 5,000 cs at 25.degree.C., (C) an adhesion modifier compound containing in its molecule a group represented by (RO).sub.3 Si-- or H(RO).sub.2 Si-- wherein R is selected from the group consisting of methyl, ethyl, trifluoroethyl, hexafluoropropyl, and methoxyethyl groups, and (D) a platinum catalyst is added (E) an organic tin compound. The combined use of components (C) and (E) provides he synergistic effect that the resulting adhesive composition can firmly adhere to even polycarbonate and polyphenylene sulfide resins which are known as difficultly bondable resins.

Abstract: Aqueous silicone dispersions having a solids content of at least 40% by weight and crosslinkable into flameproofed elastomeric state by elimination of water therefrom, well adopted, e.g., as jointing material for the construction industry, comprise an oil-in-water emulsion (A) of an .alpha.,.omega.-(dihydroxy)polydiorganosiloxane stabilized by an anionic and/or nonionic surfactant, an effective amount of a crosslinking agent (B), a non-siliceous inorganic filler material (C.sub.1), borax hydrate powder (C.sub.2), optionally, a non-siliceous hydrated inorganic filler material (C.sub.3) and, also optionally, a metal curing catalyst (D).

Abstract: Poly(arylene sulfide/sulfone) polymers are treated in order to increase melt stability and decrease impurities by contacting the poly(arylene sulfide/sulfone) polymer with a soluble zinc compound and an acidic solution. In one embodiment, the polymer is treated first with the soluble zinc compound, followed by treatment with the acidic solution. In another embodiment, the polymer is treated in one step with a solution comprising a water soluble zinc compound in an acidic solution.

Abstract: The present invention describes in detail new environmentally safe marine vessel hull coating formulations for all outer surfaces of all marine vessel surfaces specifically designed to fully comply with all existing and anticipated environmental regulations. These formulations absolutely prevent water ingress, galvanic corrosion, wood decay, worm ingress, flex to accommodate to hull motions and protect against impact damages and may last for 20 years of the economic life of the marine vessel. These inventive formulations embody specific encapsulation techniques that allow aluminum and large steel hulls to now use these advanced coating products since they do not contain any toxins or co-toxins thereby eliminating the concern about the existing TBT exemptions. The specific materials which are applied to the marine vessel hulls are specified and include an epoxy adhesive resin mixed with copper powder and a thixotropic agent to cause the coating to maintain its shape and configuration while curing.

Abstract: Disclosed herein are polyvinyl alcohol products obtained by heat-treating a melt-molded polyvinyl alcohol product composed of a polyvinyl alcohol composition containing 0.01 to 3.0 mmol of a metal compound based on 1 g of polyvinyl alcohol;a polyvinyl alcohol product obtained by stretching a melt-molded polyvinyl alcohol product composed of a polyvinyl alcohol composition containing 0.01 to 3.0 mmol of a metal compound based on 1 g of polyvinyl alcohol; anda multi-layer product comprising at least one inner layer of a melt-molded product composed of a polyvinyl alcohol composition containing 0.01 to 3.0 mmol of a metal compound based on 1 g of polyvinyl alcohol.

Abstract: A sealant for use at temperatures greater than about 700.degree. F. may be formed from:(a) about 40 to 90 wt-% of a silicone having a molecular weight of about 10,000 to 10,000,000 and repeating units comprising:(i) about 1 to 20 mole-% of units having the formula: ##STR1## wherein R comprises --H, a C.sub.1-5 alkyl group, a C.sub.1-5 fluoroalkyl group, a vinyl group or a phenyl group and(ii) about 99 to 80 mole-% of units having the formula: ##STR2## wherein each R independently comprises --H, a C.sub.1-5 alkyl group, a C.sub.1-5 fluoroalkyl group, a vinyl group, or a phenyl group; and(b) about 1 to 10 wt-% of a thermal stabilizer;(c) about 0.1 to 2 wt-% of a curing agent; and(d) about 0 to 50 wt-% of an inorganic filler;wherein the composition remains an effective sealant at temperatures above about 700.degree. F. The sealant may be used to bond and seal a barrier film or vacuum bag to a forming tool in autoclave curing and processing of thermosetting and thermoplastic composites.

Abstract: Ionized crosslinked polyacrylamide gels are provided that are capable of drastic volume changes in response to minor changes in solvent concentration, temperature of pH or salt concentration of the solvent. The gels can contain a metal ion.