Until recently the lack of control in emulsion polymerisations has meant that most acrylic PSA formulation knowledge came from solution polymerisation. But recent improvements have meant better... (2 Member Reactions)

This article will first review the advantages of acrylic / polyurethane hybrid waterborne sealant formulations, and the routes to producing a polyurethane / acrylic base polymer system. The article... (1 Member Reaction)

Glass transition temperature and storage modulus are two essential properties in controlling a pressure sensitive adhesive's performance. Elastomers often don't initially have properties that fit in... (1 Member Reaction)

This article will first examine the reasons that external plasticizer modification may not be necessary with polyurethane adhesives and sealants. It will then review the possible value that can be... (3 Member Reactions)

To date there are no encapsulants that adequately protect UV LEDs without breaking down. Silicones are popular as LED encapsulants, but conventional addition cure formulations form organic crosslinks...

This article will focus on the moisture induced degradation of the bulk adhesive when the degradation is permanent. This is a mechanism known as hydrolysis. It is dependent on the chemical nature of...

The conflict between needs that must be met when designing a hot melt adhesive can lead to a compromise that falls short of meeting any of them comprehensively. For example,...

This article reviews that status of POSS for use in adhesive systems, primarily epoxy and polyurethane, although POSS has found advantages in other systems as well. The unique physical properties of...

The diisocyanates used to produce polyurethane adhesives can be toxic, and so it's important to reduce the amount that users are exposed to. Polyurethane prepolymers can help achieve this, but usually...

The motor car has been with us for more than 120 years and today it is hard to imagine life without the motor car. It has transformed our way of life, our landscape, and our outlook. Worldwide it has...

How poly(vinyl acetate ethylene) (VAE) emulsions are made has a critical role to play in the properties and cost of the adhesives that they're used to make. While batch reactors are more flexible,...

This article examines the external events that are leading to the development of new fire resistant materials and the types of solutions that are seeing commercial acceptance. Flame retardant... (1 Member Reaction)

Much has been made of recent, more severe changes in formaldehyde regulations as they apply to adhesives. These have been well-covered in previous SpecialChem articles and editorials. However, the... (1 Member Reaction)

This article will explore why fumed silica is so widely used and valued by the formulator. The origin and various types of fumed silica will be described. The property modifications that are... (4 Member Reactions)

In 1990, the solar power industry was hit by concerns about its future due to the "EVA browning crisis". Poly(ethylene-vinyl acetate) (EVA) encapsulants used to protect photovoltaic (PV) cells were... (2 Member Reactions)

This reviews the requirements for plasticizers in adhesive and sealant formulations and identifies problems that result from conventional plasticizers. The article will then examine the development... (1 Member Reaction)

Some of the technologies used to increase acrylic pressure sensitive adhesives' bond strength have themselves brought problems, in particular causing corrosion. Polar monomers exploited to increase... (2 Member Reactions)

This article reviews epoxy adhesive formulations that can be used when cold weather application and cure are required. Curing agents for conventional epoxy resins are discussed as are epoxy acrylate... (2 Member Reactions)

While anisotropically conductive adhesives have been in existence for some time, innovation continues apace as higher-resolution displays and slimmer electronics shrink the space between electrodes....

The article reviews the use of organosilanes as adhesive promoters – both as primers and as internal additives in adhesives. The unique chemical structure of the organosilane molecule is examined and... (1 Member Reaction)