Polybutene is widely used in lubricant for modifying / improving the viscosity of the lubricant formulation to the desired final viscosity.
Polybutenes are widely used in applications where there is a plenty of chances for incidental contact of the lubricant with food such as production of aluminium foils and cans.
KVIS polybutenes are inherently good lubricants and its unique physical properties make them a perfect choice for wide variety of lubrication requirements.
The wide range of viscosities of the KVIS polybutenes offer the operational comfort to the lubricant formulators i.e the formulators would have a considerable scope to devise and optimize the formulations of the lubricants
The typical advantage of KVIS polybutenes over other polybutenes is property of very low deposit formation. When heated above 2500 C they will depolymerise.
The notable characteristics of KVIS PIB are very low toxicity and good thickening capacity.
KVIS polybutenes exhibit excellent shear stability.
KVIS polybutenes are widely used in Non staining metal working fluids, High temperature / specialty lubricants, high viscous / energy efficient gear oils and greases.
Pressure-sensitive adhesives (PSAs) and hot-melt adhesives (HMAs) of various types utilize KVIS polybutene as a key constituent.
Polybutene addition attributes to modification of properties like
» Tack
» Softness
» Bond strength
» Cohesive strength
» Water resistance of adhesives
Polybutene is superior to mineral oil in offering the advantages like
» Low colour
» Excellent colour stability
» Good resistance to oxidation
» Practically no toxicity, and
» A wide range of viscosities
Formulation cost can be reduced by using high molecular weight / viscous grades as a partial or total replacement for the expensive resins.
Pressure-sensitive adhesives which can be improved with polybutene include:
» Surgical tapes
» Industrial tapes
» Adhesives for paper laminates, labels and tapes
» Masking and friction tapes
The tackiness of the natural and synthetic rubbers can be improved by polybutene. It also helps in improving the quick stick and peel strength of elastomers.
Polybutenes attribute to various vital functions when incorporated into hot-melt adhesives,
Polybutene acts as a
» Polymer extender
» Plasticiser
» Tackifier and
» Wetting agent
Polybutene increases the cold temperature flexibility and decreases the melt index.
The major applications for these Heat Melt Adhesives include
» Packaging,
» Disposable soft goods,
» Book binding,
» Carton sealing, carpet, shoes, and furniture
Polybutene aids in improving the tack and adhesion of the tie layer in multi-layer food packaging applications.
KVIS polybutenes are used as a functional component in many special purpose paints and coatings.
The notable advantages of polybutene in such applications include
» Water resistance
» Low colour
» Plasticization of the final film
» Excellent adhesion and
» Ability to replace volatile solvents
Manufacturing costs can be lowered using polybutene emulsion formulations and inclusion of polybutenes in the formulation helps to improve water repellency than the commercial acrylic-based systems.
KVIS polybutenes can be employed in the following coating applications:
» Hot-applied thermoplastic road marking paints
» Masonry paints (as an environmentally acceptable alternative to chlorinated plasticizer) and
» Waterproofing protection for porous substrates such as wood or concrete
Polymer modification
Kothari polybutene is often used in polymer modification processes. Polypropylene random and impact copolymers modified with polybutenes can have
» Higher melt flow rates
» Greater elongation and
» Improved impact strengths.
In filled and reinforced polypropylene, polybutene can be used to "wet” the fillers and aid processing.
In polypropylene homopolymer film applications, polybutene can improve
» Flexibility,
» Tear resistance
» Gloss properties.
» Clarity and
» Polybutene incorporation can improve tear strength by 100%.
In thermoplastic resins – KVIS Polybutenes can increase
» The Impact strength
» Flexibility and
» Melt flow rate
Polybutenes plasticize polypropylene, polystyrene, ethylene-vinyl acetate copolymer resins, ester gums, and polyterpene.
Polybutene can improve the melt flow in crystal polystyrene, better than mineral oil while maintaining higher strength and heat deflection temperature. Addition of Polybutene can improve the environmental stress crack resistance (ESCR) of high impact polystyrene (HIPS) to fats and oils.
The izod impact strength of acrylonitrile-butadiene-sytrene (ABS) resins can be increased by polyisobutytene, while maintaining heat deflection temperature and increasing melt flow rate.
The impact strength of ethylene-propylene diene monomer (EPDM)/polypropylene compounds can be increased by polybutene addition.
Rubber modification
For a wide variety of vulcanized elastomers like natural rubber, butyl rubber, polyisoprene, PB, ethylene-alpha olefin rubber and SBR, KVIS polybutenes are used as extenders and plasticizers.
Polybutenes cannot be easily extracted from the elastomer by solvents as the mineral oil can be easily extracted using solvents. Also, polybutenes are resistant to exudation by heat ageing. Hence polybutenes impart their properties permanently to the rubber.
KVIS polybutenes can be used to plasticize the roofing and pipe wrap compounds made from butyl rubber or EPDM modified butyl rubber.
These compounds show
» Excellent tensile strength
» Elongation
» Low temperature flexibility and
» Colour / UV stability
In addition, polybutenes are compatible with the elastomeric portion of thermoplastic block copolymers such as butylene-ethylene-styrene block copolymer. In low concentrations, polybutenes soften and plasticize such elastomers. At higher levels, polybutenes contribute tack and adhesion.
Asphalt modification
Polybutenes can be used to modify the Asphalt that can be used in road construction. The addition of polybutenes to asphalt give improved flexibility in low temperature, better weathering and an excellent aggregate/binder adhesion.
Personal care
KVIS polybutenes are pure, clear and practically non-toxic polymers.
Personal care products like lip-gloss and roll-on deodorants can be formulated with polybutene.
Because of high purity KVIS polybutenes, it can be used to replace fatty esters and other expensive oils in the personal care product formulations.