Tackifier adhesive

In most adhesives, tackifier is the ingredient present in the highest proportion. Tackifying resins are primarily used to reduce adhesive viscosity and adjust the 7g of the adhesive s amorphous matrix phase. Through their effects on the other ingredients and the overall system they can also dramatically affect wet out, hot tack, open time, set speed, and heat resistance. 

Linear novolac resins prepared by reacting para-alkylphenols with paraformaldehyde are of interest for adhesive tackifiers. As expected for step-growth polymerization, the molecular weights and viscosities of such oligomers prepared in one exemplary study increased as the ratio of formaldehyde to para-nonylphenol was increased from 0.32 to 1.00.21 As is usually the case, however, these reactions were not carried out to full conversion, and the measured Mn of an oligomer prepared with an equimolar phenol-to-formaldehyde ratio was 1400 g/mol. Plots of apparent shear viscosity versus shear rate of these p-nonylphenol novolac resins showed non-Newtonian rheological behavior. 

Use Pressure-sensitive and hot-melt adhesives, bonding of paper to polyethylene, laminating adhesive, tackifier and plasticizer for coatings, heat sensitizer for rubber latex, pigment binder in textile finishing and printing inks, protective colloid in emulsions. 

Picconol . [Hercules] Aliphatic hydrocarbon resin emulsions used in combination with other aq. thermoplasdc and/ or elastomoic systems to pr ce coatings, paints, and adhesives tackifiers for natural and syn. rubber systems waterproof finishes for paper, textiles, and textile backings. 

Staybelite . [Hercules] Rosin derivs. or esters thermoplastic resin for adhesives tackifier, plasticizer, piooessii aid for rubbers, laminations, barrier coatings, chlorinated rubber finishes modifier for film-formers, elastomers, waxes sofiener/plasticizer for chewii gum. 

Uses Butyl mbber in sealants, coatings, elec, encapsulating compds., and conformal coalings incl. moisture-impermeable coatings, marine and construction sealants, elec, encapsulants, pressure-sensitive adhesives tackifier for pressure-sensitive adhesives processing aid, adhesion promoter... 

Properties Permanently fusible sol. in water, ketones, alcohols Uses Adhesion promoter, bonding agent for rubber compds., latex dips, for bonding syn. industrial fabrics to rubber, adhesives in wood gluing, esp. marine plywood saturant water-resistant additive for starch adhesives tackifier for nitrile rubbers tire-cord adhesive adhesive dips for mech. goods, fabrics, V belts Manuf/Distrib. Indspec... 

Uses Adhesive tackifier binder in hot-melt pavement marking formulations... 

Solvent reactivation In this method, the adhesive is applied to the surface of the part and allowed to dry. To prepare for bonding, the adhesive is reactivated by wiping with solvent or placing the part in a solvent-impregnated pad. The surface of the adhesive tackifies and the parts to be bonded are pressed together. This method is suitable oidy for relatively small parts. 

NovaRes, Adhesive tackifier resins, Georgia-Pacific Resins, Inc. 

Modified (modification types) Esterification with polyalcohols Adhesive tackifiers, printing inks, bubble gum... 

Hydrogenation Emulsifiers in the production of synthetic rubber, adhesive tackifiers... 

Disproportionation/dehydrogenation Polymerization, emulsifiers in the production of synthetic rubber, paper size, adhesive tackifiers, printing inks, insulating material... 

The DCPD concentration and reaction temperatures have strong influence on the properties of the final resins such as the softening point, color, unsaturation, and reactivity. The resin may be hydro-treated to improve the color and thermal stability. The resins are sold in the solid form as flakes or pellets. The main applications of the resins are in adhesives, tackifiers in tires and floor tiles, surface coating and varnishes, and ink. Water-white resins produced by the hydrogenation process are used in road-marking paint, hot melt adhesives with thermoplastic rubber which can be foimd in diapers and feminine hygiene products. 

As pointed out earlier, Borg-Warner markets copolymers of butadiene-MA under the name Maldene resins.Table A.3 shows the butadiene and isoprene copolymers have been claimed to be useful for coatings, surfactants, sealants, adhesives, tackifier, binder, paper and textile sizing, quenching agent for metals, and molding and laminating resin applications. The laminates prepared from blends of the butadiene copolymer and styrene show attractive dielectric and mechanical properties.Carbon fibers treated with the... 

Basic feedstock for over 12 different elastomers Basic feedstock for many different rubber accelerators Very important feedstock for furnace carbon blacks Used for CR, CM, CSM, CIIR, CO, ECO, ADC, etc. Directly used for over ten different rubbers Used for production of over 14 different rubbers Used for adhesion promoters, tackifiers, curatives, PUR Needed for HR, CIIR, BUR, BIMS, AO, tackifiers, etc. Important feedstock for IR and HR rubber Feedstock for TBBS, CBS, MBS, MBTS accelerators Needed for carbon disulfide for rubber accelerators Needed for formaldehyde for adhesion, tackifiers, etc. Used for MDI and aniline for several rubber chemicals Feedstock for numerous rubber chemicals... 

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