Adhesives polyols used

The polyester type polyols used in polyurethane laminating adhesives are produced by the direct esterification of polyfunctional carboxylic acids and glycols. Polyester polyols provide the soft segment in polyurethane products giving the adhesive flexibility. Ester groups of the polyol also contribute to adhesion. Polyester polyols provide limited wetting and adhesion of olefinic surfaces with amide slip additives (in contrast to polyether polyols). Typical examples include adipic acid, caprolactone, maleic acid and isophthalic based polyester polyols. 

QO Poiymeg . [QO Ghent] Poly-tetramethylene ether glycol polyol used in urethane elastomers, fibers, coatit, and adhesives, in the prod, of high-perfmmance theniioset and ther-moplifitic dastomeis, elastomeric polyesters, as polyester modifiers. 

Chem. Descrip. Aromatic polyether polyol Uses Reactive diluent, dispersant, modifier, flexibilizer, chem. resist, aid, adhesion promoter on substrates for coatings and other applies. resin intermediate... 

Chem. Descrip. Primary capped, amine-contg. polyether polyol Uses Curing agent to promote rapid cure in PU systems crossiinking agent for spray foam, coatings, caulks, adhesives Properties Gardner 1 clear liq. sp.gr. 1.05 vise. 17,000-22,000 cps hyd. 

Chem. Descrip. Polypropylene glycol polyol Uses Polyol in prep, of one- and two-component PU foams, adhesives, coatings, elastomers, sealants... 

Chem. Descrip. Bisphenol A-based polyol Uses Diluent, wetting agent, flow aid, mar resist, aid, impact strengthener, pot life extender, adhesion promoter on substrates, flexibilizer for coatings, low-VOC applies. 

Chem. Descrip. Dimer acid-based polyester polyol Uses Building block for high-performance PU elastomers, coatings, adhesives modifier (increases flexibility, impact resist., toughness, hydrolytic stability) for industrial coatings (automotive, coil, textile, leather, wood lacquers)... 

Chem. Descrip. Slightly branched, hydroxyl-terminated polyester polyol Uses Polyester for sol n. laminating adhesives, sol n. coatings, prepolymers, and one-shot castables Fealmes Designed for reaction with diisocyanates to produce crosslinked elastomeric PUs low melting, soft solid which crystallizes very slowly at R.T. 

Chem. Descrip. Sat., aliphatic, linear, hydroxyl-terminated polyester polyol Uses Polyester for flexible foams, sol n. coatings and adhesives, one-shot castables, castable prepolymers, and thermoplastic elastomers Features PUs exhibit solv. resistance, low temp, properties, low modulus elastomers, and resiliency Properties Liq. at R.T. 

Uses Monomer for creation of new polymer backbones and in formulating high performance acrylic latexes, plastic and rubber modifiers, coatings, adhesives, polyol modifiers, oil field demulsifiers, textile finishes, vise, modifiers, reactive chems. 

Hazardous Decomp. Prods. CO, CO2, NO, hydrogen cyanide NFPA Flealth 4, Flammability 3, Reactivity 2 Uses Monomer for acrylic and modacrylic fibers, paints in prod, of ABS and SAN copolymers, nitrile rubber, surfactants, adhesives, polyols, barrier resins, carbon fibers organic synthesis formerly as pesticide fumigant... 

Storage Sensitive to moisture store in cool, dry place store under nitrogen keep tightly closed Uses Monomer for creation of new polymer backbones and in formulating high performance acrylic latexes, plastic and rubber modifiers, coatings, adhesives, polyol modifiers, oil field demulsifiers, textile finishes vise, modifiers, reactive chems. Manuf./Distrib. ABCR http //www.abcr.de, Aldrich http //www.sigma-aldrich.com, TCI Am. http //www.tciamerica. com... 

Propylene oxide, made by reacting propylene with chlorine to form propylene chloro-hydrin which is then dehydrochlorinated with caustic soda or lime (Eqs. 3-5), is used in the production of polyether polyols used for producing urethane foam. It also finds use in propylene glycol for making unsaturated polyester resins and in the pharmaceutical and food industries. Epichlorohydrin (EPI), formed by chlorination of propylene to allyl chloride and then dehydrochlorination (Eqs. 6 and 7), is used to make epoxy resins for producing laminates, fiber-reinforced composites, protective coatings, and adhesives. 

Polypropylene glycol (PPG, polypropylene oxide) n. A family of non-volatile liquids with the general formula HOCH(CH3)-[-CU2CH- CHs)0-]nCH20H. They are similar to the polyethylene glycols, but are more oil-soluble and less water-soluble. They are polyols used in producing polyurethane foams, adhesives, coatings, and elastomers. 

Pick-up adhesives bond the tissue to the Kraft paper tube. Depending on the machine systems the following adhesives are used If the adhesive is applied directly to the tube by a slice (machine speed up to 400 m/min), aqueous colloidal solution systems at room temperature are normally used. If the adhesive is applied directly to the tube by a nozzle (machine speed up to 450 m/min), aqueous polyol-based adhesives are often used at room temperature. 

Table 9 Principal polyols used for polyurethane adhesives and sealants.

Chem. Descrip. Trimethylolpropane-based polyol Uses Reactive diluent for coatings enhances wetting, imparts good flow, mar resist., and impact str., extends pot life, improves adhesion to substrate, increases flexibility for low VOC applies. 

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