Rextac, LLC

Other

John Joseph DeCair

Andres Sustic

Nick Fowler

Enrico Buenacosa

John Passmore

James Nicholas Fowler

Steven Oetting

A method to make a hot-melt polymer formulation with from 50 wt % to 100 wt % of a propylene-co-butene-1-co-hexene-1 terpolymer or a propylene-co-hexene-1 copolymer, each polymer made using a metal chloride supported Ziegler-Natta catalyst, at a process temperature between about 130 degrees Fahrenheit and about 200 degrees Fahrenheit and at a reactor pressure sufficient to maintain the propylene in a liquid phase without solvent; using 1 wt % to 20 wt % of at least one of: a metallocene-catalyst made polymer; a homopolymer of propylene with 0.1%-5% functionality; and a styrene block copolymer; and wherein the melt viscosity of the terpolymer or copolymer formulation is controlled by addition of hydrogen gas as a chain transfer agent.

Method for making hexene-1 containing amorphous poly alpha olefins for improved hot-melt adhesives

A process for reducing unreacted monomers and condensable and non-condensable hydrocarbon fractions in an APAO which includes introducing molten APAO into heated and insulated jacketed pipe while injecting a stripping agent based on the total weight of the contents of the jacketed pipe; maintaining the stripping agent with the molten APAO stream from ten seconds to ten minutes, forming a flowable heated mixture at 250 to 450 degrees Fahrenheit in the heated and jacketed pipe forming a flowing heated mixture; and passing the flowing heated mixture through a thin film evaporator assembly, while maintaining the temperature of the flowing heated mixture, stripping the organoleptic species and acids and volatile organic components from the flowing heated mixture and removing and recovering a condensable fuel fraction and a non-condensable hydrocarbon gas with energy, while simultaneously forming an odor-reduced, cleaned molten APAO-based HMA.

Amorphous poly alpha olefins of low acid and organoleptic properties and a process for producing same

Adding a low molecular weight (or alternatively, high melt flow rate), functionalized, isotactic polypropylene (iPP) to a hot melt adhesive (HMA), composition containing a propylene-butene-1, and/or a propylene-ethylene amorphous poly alpha olefin (APAO) copolymer, in addition to other co-adjuvants (such as a tackifier or a plasticizer), results in an APAO-based HMA that shows improved tensile strength and bonding properties, over an HMA that contains only the propylene-butene-1 and/or the propylene-ethylene APAO copolymer (with or without a tackifier and/or a plasticizer).

APAO hot melt adhesives containing a low molecular weight, functionalized, isotactic polypropylene

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Odessa, TX, United States of America

John Joseph DeCair