Eastman Chemical Company

Synthomer Adhesive Technologies LLC

Andrea Gail Hagood

Marc Stacey Somers

Raymond Prescott Cottle

Bennett H Novak

Mutombo Joseph Muvundamina

Gary Robert Robe

Timothy Williams

Dhiraj Sudesh Sood

Terri Roxanne Carvagno

Bee Kim Liew

Rajesh Puthenkovilakom Raja

Laura Lee Martin

Carol Ann Perkins

Rajesh Raja Puthenkovilakom

Jianning Liu

Puthenkovilakom Rajesh Raja

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

Amorphous propylene-ethylene copolymers are described herein that can include high amounts of ethylene and exhibit desirable softening points and needle penetrations. The desirable combinations of softening points and needle penetrations in these propylene-ethylene copolymers allow them to have a broad operating window. Due their broad operating window, the propylene-ethylene copolymers can be utilized in a wide array of applications and products, including hot melt adhesives.

Amorphous propylene-ethylene copolymers

Adhesives comprising amorphous propylene-ethylene copolymers

A low molecular weight copolymer is provided comprising propylene and ethylene,

This invention relates to a composition suitable for use in making moisture resistant gypsum products. In particular, this invention relates to resin dispersions and their use in combination with gypsum to form moisture resistant gypsum compositions which are settable by hydration. Further, the invention relates to moisture resistant products formed from such settable gypsum compositions, e.g. panels and boards, and a method for the manufacture of such moisture resistant gypsum products.

Incorporation of a resin dispersion to improve the moisture resistance of gypsum products

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Kingsport, TN, United States of America

Andrea Gail Hagood