Eastman Chemical Company

Synthomer Adhesive Technologies LLC

Bennett H Novak

Marc Stacey Somers

Raymond Prescott Cottle

Puthenkovilakom Rajesh Raja

Terri Roxanne Carvagno

Andrea Gail Hagood

Mutombo Joseph Muvundamina

Gary Robert Robe

Timothy Williams

Dhiraj Sudesh Sood

Bee Kim Liew

Rajesh Puthenkovilakom Raja

Jianning Liu

Susana Marques

Ming Allison Yuan

Da Yu Vincent Zhang

Boon Hui Janice Ang

Thomas H Quinn

Michelle C Kueppers

Puthenkovilakom Rajeshraja

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

Adhesive composition comprising amorphous propylene-ethylene copolymer and polyolefins

Adhesives comprising amorphous propylene-ethylene copolymers

Adhesive composition comprising amorphous propylene-ethylene copolymer and propylene polymer

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

Amorphpus propylene-ethylene copolymers

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Longview, TX, United States of America

Bennett H Novak