Polyurethane is a thermoplastic polymer used in the manufacturing of resins for fillers, adhesives, and elastomers. It is a synthetic material created by combining a polyhydric alcohol and an isocyanate through polymerization. Polyurethane creates tough coatings, strong adhesives, durable resins, and foams. Most polyurethane is heat resistant, although thermoplastic polymers are also available that can be molded by heat.
Polyurethanes are unique from other polymers in that they have carbamate groups in their molecular structure. Polyurethane can come from a variety of materials, including stabilizers, monomers, and prepolymers. The addition of materials such as antioxidants can act as stabilizers to strengthen the polyurethane and give it customizable features like heat resistance. Stabilizers give manufacturers the ability to create polyurethanes that increase resistance to damage from light, temperature, oxidization, chemicals, and atmospheric contaminants. Manufacturers may also add colorants because the natural color of polyurethane is white.
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Lists combine the ease of Bookmarks with the versatility of Tags. Instead of one collection of bookmarked items, create as many collections, called "Lists," as you need.
Find the link to your List page in the user menu.
All Tags have been converted to separate Lists, and your bookmarked items have been saved to a "Bookmarks" List.
When you click the Add to List button, a dropdown of your existing Lists appears. Click the List name to which you want to add this product or formula.
You can also create a new List. Simply click "Create a New List" and enter a name.
When you define a new List, the current item is automatically added to it. You can add a product or formula to as many Lists as you need.
Easily see which Lists this item appears in, and quickly go to that List from the links that appear on the page.
