Synthomer Adhesive Technologies LLC

Synthomer Adhesives Technology LLC

Bee Kim Liew

James Palmer Dickerson

Bing Yuan

Jacobus Siera

Christopher Wayne Osborne

Marc Stacey Somers

Terri Roxanne Carvagno

Raymond Prescott Cottle

Bennett H Novak

Andrea Gail Hagood

Jianning Liu

Propylene-ethylene copolymers are provided that exhibit superior tensile strength and mechanical properties due to their specific propylene and ethylene content, triad tacticity, viscosity, and crystallinity. Moreover, we have discovered that certain processing conditions, such as polymerization temperature and external donor to catalyst ratios, can facilitate the production of the high tensile strength propylene-ethylene copolymers described herein. Furthermore, the high tensile strength propylene-ethylene copolymers may be used to produce a variety of hot melt adhesives, such as those for hygiene applications, woodworking applications, lamination applications, and packaging applications, which exhibit unique and superior mechanical properties.

Propylene-ethylene copolymers and adhesives containing propylene-ethylene copolymers

A tackifier composition comprising at least one thermoplastic hydrocarbon resin and an antioxidant composition is provided; wherein a portion of the volatile organic compounds in the thermoplastic hydrocarbon resin has been removed; wherein the antioxidant composition comprises at least one primary antioxidant and at least one secondary antioxidant; and wherein the levels of individual volatile organic compound monitored in the tackifier composition are less than about 0.5 ppm as measured by GC/MS headspace analysis. Processes for producing the tackifier composition are also provided as well as adhesives comprising the tackifier compositions.

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Kingsport, TN, United States of America

Bee Kim Liew