Production adhesives

Other Uses. Large quantities of hydrocarbon resins are used in mastics, caulks, and sealants (qv). Polymers for these adhesive products include neoprene, butyl mbber, polyisoprene, NR, SBR, polyisobutylene, acryHcs, polyesters, polyamides, amorphous polypropylene, and block copolymers. These adhesives may be solvent or water-borne and usually contain inorganic fillers. 

Microcapsules are used in a number of pharmaceutical, graphic arts, food, agrochemical, cosmetic, and adhesive products. Other specialty products also exist, thus the concept of microencapsulation has been accepted by a wide range of industries. In order to illustrate how microcapsules are used commercially, it is appropriate to describe a number of commercial microcapsule-based products and the role that microcapsules play in these products. 

TriaUyl Gyanurate Gure of Preformed Polymers. TAC and TAIC are often used in smaU amounts with vinyl-type and condensation polymers for cured plastics, mbber and adhesive products of high strength, and heat and solvent resistance. In some cases, chemical stabUity is also... 

Adhesive Transfer Processes. Many polymers, whether dehberately or accidentally, are adhesives, so that much of the adhesive industry can be regarded as a part of the mbber and plastics industry. However, there are several important material-transfer appHcations involving polymer products that are so critically dependent on controlled adhesion that they merit specific mention in that category. They include hot stamping foils, release coatings for pressure-sensitive adhesive products, photocopier materials, transfer coatings, and transfer printing of textiles. 

Promote improved elasticity and cold temperature flexibility. Used in cables, self-adhesive products, roadmarking materials, etc. 

Office supplies and office communication have been revolutionized by the introduction of the 3M product Post-it Notes in 1980. The temporary adhesive of these self-sticking notes actually was initially rejected as a glue by its inventor, 3M chemist Spencer Silver, because of its impermanence. However, 3M researcher Art Fry found a niche for the adhesive—as an adhesive for a temporary bookmark for his choir hymnal. Key to the performance of these removable, repositional adhesive products is the application of the adhesive to the backing of a note sheet via tiny microspheres rather than a continuous film. With an average particle diameter of 25-45 fim, the microsphere adhesives form a discontinuous layer that assists in retaining the ability to re-apply the note to new surfaces. Traditional adhesive tape contains particles of smaller dimension (typically 0.1 to 2.0 pm) that coalesce to form a continuous film that limits removal. ... 

M. Regent, S. Vacher, C. Moulherat, O. Decavallas, Adhesive production and pottery function during the Iron Age at the site of Grand Aunay (Sarthe, France), Archaeometry, 45,101 120 (2003). 

Whilst the poor resistance to oil and solvents is a drawback in some applications, it is a positive advantage in solution processing applications, e.g., adhesive production. 

Terpene resins are most commonly used in adhesive production, where they confer very strong tackifying properties. The terpene resins improve the resistance of adhesives to oxidative degradation. These resins are normally produced from p-pinene and are light yellow in colour. Polymers of dipentene and limonene are also available as resins. 

Resins for Adhesives, product brochure, Derives Resiniques et Terpeniques (DRT). 

The electrical and electronic industries are generally lumped into one since it is difficult to place boundaries between the two, and they often have similar, if not identical, requirements. The electrical industry is comprised of manufacturers of motors, transformers, meters, etc. It is a large, stable industry with demands for many types of adhesive products. 

Epoxy adhesives are most commonly used as liquids or pastes. However, certain types of epoxies can be employed in the form of a solid. The components in these adhesives are mixed and processed to a stage where the resulting adhesive product is in a solid but still fusible (uncrosslinked) state. When the applied solid adhesive is heated, it melts, flows, and wets the substrate. Additional heating time then causes the adhesive to cure completely into a strong, thermosetting structure. 

Licari, J. J., High Temperature Resistant Adhesives, Product Engineering, December 1964, p. 104. 

The epoxy raw materials can be harmful and hazardous. These materials could be toxic, flammable, and irritating to skin. It is generally the duty of the formulator to make sure that these materials are worked within a safe environment. Once they are formulated, the end user also has responsibilities with regard to safe handling of epoxy adhesive products. 

TABLE 18.3 Exposure Potential of Epoxy Adhesive Production and Application Processes... 

They are of interest to the formulator as they apply to raw materials and to the final adhesive product. The formulator must understand not only how to control the quality of the adhesive product but also how to use specifications as they relate to raw materials or to the end user or customer. 

Final inspection of the adhesive products is used to satisfy the customer s specification and to ensure the formulator of the quality and consistency of the product. The test methods employed will vary considerably depending on the industry for which the product is intended and the specific customer. 

Value of U.S. Shipments of Paint, Coating Adhesive Products 30.3 Bil. US 2009 Census M3... 

Dynea Oy is a leading provider of industrial adhesives and paper overlays. Its adhesives products include... 

For subsequent adhesive production, it is important to note that all the reaction mixtures were completely soluble in 0.1% and 1% aqueous sodium hydroxide solution. The solubilities in 0.1N and IN aqueous sulfuric acid solutions were 81.9 and 75.4%, respectively. 

---