Polyurethane chemistry became a branch of modern polymer chemistry with the discovery of Dr. Bayer and his coworkers in Germany. The versatility of this chemistry was revealed over the next 50 years and continues to be an area where new developments occur.

• Please login to view document.

Tack is an important property of an adhesive that impacts the critical initial phase of bonding performance. The ability to accurately describe this performance characteristic is key to predicting the success of an adhesive. For adhesive applications that require heat activation, the ability to measure tack at elevated temperatures (45 - 80°C) is also critical.

• Please login to view document.

Heat-activated adhesives based on Dispercoll® U polyurethane dispersions have become established worldwide in demanding industrial applications, e.g. in shoe production, in the 3D-lamination of furniture cabinet doors and in the production of automotive interior trim parts. Due to the inconvenience and limitations of two-component processing, one-component self-crosslinking polyurethane dispersions have received much attention. This paper reports on the main aspects of the development and the properties of one-component dispersion adhesives and their use in a new application of film adhesives. Presented at the Fall 2005 meeting of the Adhesives and Sealants Council.

• Please login to view document.

This paper will describe the results of a series of statistically designed experiments to optimize a formula for bonding high pressure laminate to particle board.

• Please login to view document.

Polyurethane dispersions based on Dispercoll U consist of urethane urea polymers dispersed in water. They are often used in pure form, but can also be formulated with other polymer and resin dispersions.

• Please login to view document.

Dispercoll U 56 was developed especially for heat activation applications, in which good activating properties of the adhesive film are particularly important. For this reason, Dispercoll U 56 has favorable melt rheological properties in the activated state, which help to ensure good contact even at low temperatures.

• Please login to view document.

Dispercoll U KA 8755 was developed as a raw material for heat-activatable adhesives with high initial strength. It has the special property that it can be used at higher sealing temperatures than are customary.

• Please login to view document.

This paper will focus on the use of two new water dispersible polyisocyanates and how they can improve the performance of polyurethane dispersions.

• Please login to view document.

This presentation will provide an overview of the crosslinking improvements that can be achieved through the use of water dispersible polyisocyanate crosslinkers. Polyisocyanates can be used to improve the performance of many types of waterborne polymers – polyurethanes, polychloroprenes, polyacrylates and vinyl acetate-ethylene copolymers.

• Please login to view document.

A major portion of the newer patent literature concentrates on tailormaking aqueous polyurethanes for specific end uses. This article will focus on these newer areas.

• Please login to view document.

An overview concerning tris-3-(1-aziridino)propionate chemistry and their uses are given. The overview is based on an exhaustive literature search, which covers the chemical literature up to March 2002, and concentrates on the three most commercially significant tris-3-(1-aziridino)propionate crosslinkers: trimethylolpropane tris-(1-(2-methyl)aziridino)propionate (TTMAP), trimethylolpropane tris-3-(1-aziridinopropionate) (TTAP) and pentaerythritol tris-3-(1-aziridinopropionate) (PTAP).

• Please login to view document.