Polyurethanes Adhesion

Sorbitol is manufactured by the reduction of glucose in aqueous solution using hydrogen with a nickel catalyst. It is used in the manufacture of ascorbic acid (vitamin C), various surface active agents, foodstuffs, pharmaceuticals, cosmetics, dentifrices, adhesives, polyurethane foams, etc. [Pg.368]

Polymer-based pH sensors are not suitable for continuous in-vivo measurements due to the poor biocompatibility of plasticizers used in the polymer membrane. To minimize such a problem, surface treatment or using a reduced amount of plasticizers has been proposed [71]. In order to improve stability and adhesion, polyurethane has been used as an alternative to PVC membranes in the construction of pH sensing membranes [72, 73],... [Pg.296]

Polyesters [2] find use in fibers [poly(ethylene terephthalate), poly(ethylene oxybenzoate), poly(ester ethers), poly(ester amides), etc.] [1], coatings (especially unsaturated polyesters) [4], plasticizers, adhesives, polyurethane base resins, films, etc. Cross-linked polyesters prepared from glycerol and phthalic anhydride (alkyd resins) have been reviewed [20], High-melting poly aryl esters have been investigated for high-temperature applications. [Pg.54]

The directives apply to all materials used in the make up of electrical and electronic components and include paint, plastics, adhesives and rubbers, plastic parts, protective coating materials, epoxy adhesives, cyanoacrylate adhesives, polyurethane adhesives as well as complete computer motherboards. Computer and peripheral equipment are made up of different materials consisting of plastic, ferrous and non-ferrous metals, trace heavy metals, glass, foams, rubber, carbon powder and additives. Other non-metal materials posing environmental and health problems present in electrical and electronic products are beyond the scope of this book and will not be discussed here. The supportive components used in these products fall within the following ten product categories in the directive which are ... [Pg.125]

Epoxy resin adhesive, methacrylate adhesive, polyurethane adhesive as reference to the applied adhesive basis (adhesive basic material). [Pg.11]

Thermoplastics Cyanoacrylates, methacrylates, radiation-curing adhesives, polyurethanes (depending on the degree of crosslinkage). [Pg.41]

Static mixing tubes are particularly suitable for the processing of two-component epoxy resin adhesives, polyurethanes and methacrylate adhesives (A-B method, Section 4.3.3) with mixing ratios in equal shares adjusted by the manufacturer. [Pg.75]

TECHNOMIC PUBLISHING COMPANY 851 New Holland Avenue, Lancaster PA 17604, (717) 291-5609. A variety of conferences covering adhesives, polyurethanes, pressure sensitive adhesives, medical adhesives, and other related topics. [Pg.46]

Adhesives-Epoxy Adhesives-Polyurethane Syntatics-Epoxy ... [Pg.27]

Biodegradable non-aromatic adhesive polyurethanes based on disaccharides for medical applications, 49,90-96. [Pg.853]

The use of adhesives/sealants in both the industrial and consumer spheres has increased dramatically in the past 20 years. In the industrial segment, both reactive and nonreactive systems are used in a wide variety of applications. The increasing use of reactive systems has, however, tended to overshadow that of the nonreactive systems. Most prominent amongst the reactive systems favored in industrial applications are anaerobic sealants (methacrylate ester based), instant adhesives (alkyl cyanoacrylate ester based), acrylic (toughened) adhesives, epoxy resin adhesives, polyurethane/isocyanate-based adhesives, silicone adhesives/sealants, and phenolic resin adhesives. [Pg.38]

Structural adhesives are normally categorized or subdivided into subclasses based on the resin chemistries used in their formulation, which can be in the form of solids, liquids, pastes or films. The most important categories of structural adhesives are the thermoset cured adhesives based on phenolic, epoxy and polyurethane or acrylic resins and include phenolic adhesives. Epoxide adhesives, Toughened epoxide adhesives, Polyurethane adhesives, Acrylic adhesives and Toughened acrylic adhesives. Several of the categories can be further subdivided into both one- and two-component adhesives. The one-component structural adhesives, which can be liquids, pastes or solids (films), usually require the inclusion of added energy for activation or to effect cure in the... [Pg.505]

Polyurethanes n. Polyurethanes are the most well-known polymers used to make foams. Polyurethanes can be elastomers, paints, fibers, or adhesives. Polyurethanes are called polyurethanes because in their backbones they have a urethane linkage. Polyurethane can be any polymer containing the urethane linkage in its backbone... [Pg.771]

Beeswax, 30% pet (adhesives and waxes) p-tert-Butylphenol, 2% pet (glues, preservatives) Cobalt chloride, 1% pet (dryers in stains and varnishes) Mixed dialkyl thioureas, 1% pet Pentachlorophenol, 1% pet (wood preservatives) Phenol-formaldehyde resin, 10% pet (adhesives) o-Phenylphenol, 1% pet (preservative in adhesives) Polyurethane resins and catalysts Propylene glycol, 4% aq (varnishes)... [Pg.951]

Acrylates (concrete wetting agent, adhesive) Polyurethanes, also catalysts (rock strengthening) Preservatives (skin protection creams, technical oils) Antimycotics... [Pg.1014]

Reactive polyurethane adhesives polyurethane prepolymers with terminal hydroxyl groups or terminal isocyanate groups. Uses plastics, metals, silicate-containing materials. [Pg.18]

In lightweight metal constructions, tubes and hollow profiles of any cross section can be designed and bonded as socket joints. Door and window frames are made from steel and aluminum profiles with angles bonded in place (epoxy adhesives), a heat-insulating intermediate layer being applied by bonding or made by casting with an adhesive (polyurethane, epoxy adhesives). [Pg.69]

In the interior of the vehicle, prefabricated roofs consist of outer decorative layers that are bonded to the layers imparting mechanical rigidity (emulsions, contact adhesives, polyurethane hot-melt adhesives). Contact adhesives, polyurethane adhesives, and high-frequency welding auxiliaries (resin solutions or PVC-based emulsions) are used for attaching textiles or plastic films to the supports made of molded fiberboard or plastics for door inner panels. Emulsions, contact or polyurethane hot-melt adhesives are used for bonding textiles to molded fiberboard or plastics for parcel shelves. [Pg.79]

In urethane systems, adhesion is attributed to chemical reactions (covalent bonding and hydrogen bonding) and physical forces related to wetting and spreading which increase the work of adhesion. Polyurethanes are fairly polar materials, similar to metals from which molds are constructed. For this reason, wetting and spreading is typical of polyurethanes. Mold surfaces may have a surface... [Pg.66]

Adhesion. Polyurethane foam forms a strong adhesive bond with a wide range of substrates including metal, glass and wood. [Pg.150]

Semi-structural adhesives Polyurethane Polyvinyl acetate Hot melt adhesives such as ... [Pg.176]

Shoe adhesive Polyurethane, phenol, SBR, rubber latex... [Pg.293]

Single-component adhesives polyurethane 15-25°C (Cooling chamber/room temperature)... [Pg.939]

Most of the upper and sole materials used in shoe industry cannot be directly joined by using the current adhesives (polyurethane and polychloroprene adhesives) due to their intrinsic low surface energy, the presence of contaminants, and antiadherend moieties on the surface. Therefore, the surface preparation of upper and sole must remove contaminants and weak boundary layers, and roughness and chemical functionalities able to produce adequate bond strength should be created. [Pg.1319]

Epoxy adhesives Polyurethane adhesives Silicone adhesives Hot curing rubber adhesives... [Pg.82]

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