Illinois Tool Works Inc.

Paul C Briggs

Donald Edmond Gosiewski

Eric G Parker

David P Wagner

Donald J Broomfield

Richard M Strand

Foamed in place polymer compositions are made from monomer-in-polymer solutions containing free radical polymerization catalysts and foaming agents.

Foamed acrylic polymer compositions

A high strength conduit for carrying potable water at temperatures of up to about 180.degree. F. comprising a first tubular member having a mating end portion formed from polyvinyl chloride, a second tubular member having a mating end portion also formed from polyvinyl chloride, telescopically received in the mating portion of the first tubular member, a cured adhesive composition joining said mating end portions of the first and second tubular members. The cured adhesive composition is formed from a curable composition comprising a minor proportion by weight of a thermoplastic elastomeric copolymer comprising from about 40 to about 97 weight percent of recurring units of a monovinyl aromatic monomer, from about 1 to about 30 weight percent of recurring units of an .alpha.,.beta.-unsaturated dicarboxylic acid anhydride, from about 1 to about 30 weight percent of recurring units of an .alpha.,.beta.-unsaturated carboxylic acid, and from about 1 to about 40 weight percent of recurring units of a C.sub.1 -C.sub.4 alkyl ester of methacrylic acid. On the basis of 100 parts of the thermoplastic elastomeric copolymer of (a), from about 1 to about 35 parts by weight of an elastomer comprising a block copolymer of butadiene and styrene is also included. The composition also includes major proportion by weight of reactive solvent for the thermoplastic copolymer, such as methyl methacrylate monomer, and a catalyst for said reactive solvent.

Adhesive compositions and adhesively joined pipe segments

Adhesive compositions are made from methacrylate ester monomers, elastomeric polymers having a Tg below -25.degree. C. and which are soluble in the monomers, core-shell polymers which swell in the monomers but do not dissolve therein, and free radical producing catalysts. These adhesive compositions when used in bonded assemblies exhibit a combination of high adhesive bond impact strength and high bulk tensile elongation.

Adhesive for low temperature applications

It has been discovered that by adding one or more strong organic carboxylic acids to conventional acrylate and/or methacrylate based adhesive compositions, the bonding characteristics thereof change dramatically. Thermoplastic materials whose bondability is most dramatically enhanced by the compositions of the present invention are nylon and blends of nylon and nylon-like materials with other polymers. Thermoset materials which exhibit dramatically enhanced bondability comprise homogeneous materials such as epoxies, and composite materials such as polyesters, urethanes, and/or epoxies, containing glass, minerals, and the like, which are polar or have hydrogen bonding capability. The present invention thus utilizes acrylate and/or methacrylate based adhesive compositions as a base material. To this base material is added an effective amount of one or more strong organic carboxylic acids, e.g., acids having a relatively high dissociation constant (K.sub.d or K.sub.ld). It has further been discovered that, the addition of water to these acids can increase their effectiveness, apparently through partial or enhanced solubility, which is believed to aid in the dissociation thereof.

Acid modified adhesive composition

Method and apparatus for the coating of a substrate wherein the following chronologically takes place under vacuum conditions: (i) non-oxidized plating material is deposited on the substrate via ion vapor deposition; and (ii) a coating material is chemically bonded with the non-oxidized plating material. The coating material may comprise a primer, which chemically bonds with the non-oxidized plating material, and a polymer, which impregnates the primer-prepared plating material. Said polymer may also chemically bond with the primer. Alternatively, the coating material may comprise an epoxy which forms an organo-metallic bond with the plating material. In another embodiment of the invention, the coating material may comprise boron trifluoride, which chemcially bonds with the non-oxidized plating material, and a polymer, which impregnates the boron trifluoride-prepared plating material. Alternatively, the coating material may comprise calcium, silicon, and oxygen which chemically bonds with the plating material. The coating material may be bifunctional, in that it not only chemically bonds with the plating material but also bonds with a second coating material, yielding a chemically bonded uniform coating with desired results.

Method for plating and coating articles

A novel methacrylate-based composition is disclosed. The composition is preferably used as an adhesive. The composition comprises an acrylate-based or methacrylate-based ester monomer, a catalyst, a chlorinated or chlorosulfonated polyethylene polymer resin and a graft co-polymer resin. The chlorinated polyethylene polymer resin used includes organic sulfonyl chloride. The composition preferably further includes an acrylate-based or methacrylate-based acid monomer, and a catalyst activator. A preferred chlorosulfonated polyethylene polymer resin contains about 43 weight percent chlorine, about 1.1 weight percent sulfur, and about 34 millimoles sulfonyl chloride moiety per 100 grams thereof. Preferred graft co-polymer resins are ABS, MBS, MABS, ASA, all-acrylic, SA EPDM and MAS. More-preferred graft co-polymer resins are MABS, ASA, all-acrylic and MBS. Most-preferred graft co-polymer resins are MABS and ASA. A preferred methacrylate-based acid monomer is methacrylic acid. Preferred methacrylate-based ester monomers are methyl methacrylate, ethyl methacrylate, butyl methacrylate, cyclohexyl methacrylate, 2-ethylhexyl methacrylate and tetrahydrofurfuryl methacrylate. More-preferred methacrylate-based ester monomers are methyl methacrylate and ethyl methacrylate. A most-preferred methacrylate-based ester monomer is methyl methacrylate. The composition possesses enhanced compression shear strength, lap shear strength, peel strength and impact strength adhesive physical properties.

Bonding method employing novel methacrylate based adhesive compositions

Method and apparatus for the coating of a substrate wherein the following chronologically takes place under vacuum conditions: (i) non-oxidized plating material is deposited on the substrate via ion vapor deposition; and (ii) a coating material is chemically bonded with the non-oxidized plating material. The coating material may comprise a primer, which chemically bonds with the non-oxidized plating material, and a polymer, which impregnates the primer-prepared plating material. Said polymer may also chemically bond with the primer. Alternatively, the coating material may comprise an epoxy which forms an organo-metallic bond with the plating material. In another embodiment of the invention, the coating material may comprise boron trifluoride, which chemically bonds with the non-oxidized plating material, and a polymer, which impregnates the boron trifluoride-prepared plating material. Alternatively, the coating material may comprise calcium, silicon, and oxygen which chemically bonds with the plating material. The coating material may be bifunctional, in that it not only chemically bonds with the plating material but also bonds with a second coating material, yielding a chemically bonded uniform coating with desired results.

Apparatus for plating and coating

It has been discovered that by adding one or more strong organic carboxylic acids to conventional acrylate and/or methacrylate based adhesive compositions, the bonding characteristics thereof change dramatically. Thermoplastic materials whose bondability is most dramatically enhanced by the compositions of the present invention are nylon and blends of nylon and nylon-like materials with other polymers. Thermoset materials which exhibit dramatically enhanced bondability comprise homogeneous materials such as epoxies, and composite materials such as polyesters, urethanes, and/or epoxies, containing glass, minerals, and the like, which are polar or have hydrogen bonding capability. The present invention thus utilizes acrylate and/or methacrylate based adhesive compositions as a base material. To this base material is added an effective amount of one or more strong organic carboxylic acids, e.g., acids having a relatively high dissociation constant (K.sub.d or K.sub.1d). It has further been discovered that, the addition of water to these acids can increase their effectiveness, apparently through partial or enhanced solubility, which is believed to aid in the dissociation thereof.

Acid modified adhesive compositions

Ferrous article layered with ion vapor deposited non-oxidized aluminum

An improved patch and method of repair of the integrity and/or surface imperfections of a structure which is defective because of accidental damage or flaws during the course of manufacture or subsequent use and handling. The invention relates to the use of a fibrous cloth which is impregnated by a fast curing acrylic-based adhesive composition which is utilized with an activator/accelerator that can be applied to the margins of the faulty workpiece and thence to the overall impregnated cloth to quickly cure it at ambient temperature. The improved material provides good adhesion to a wide variety of materials including unprepared metals, painted metals, plastics and moist or oil contaminated surfaces and displays a high impact strength heretofore not found in such materials.

Patch and method of repairing discontinuities in work surfaces

(Meth)acrylate-based compositions

A polymerizable mixture for adhesive bonding is disclosed. The polymerizable mixture comprises a polymerizable acrylic-based material, a polymerizable epoxide-based material and a bifunctional molecular material reactable with said acrylic-based material and said epoxide-based material.

Growing community of inventors

Charlestown, MA, United States of America

Paul C Briggs