But most of these monomeric molecules are perfectly stable as they are, so chemists have devised two general methods to make them react with each other, building up the backbone chain as the reaction proceeds. Condensation-elimination polymerization This method (also known as step-growth) requires...
208. All of these curing agents are low molecular weight polyamide types specially modified to make them more water compatible by using low molecular weight carboxylic acids and/or hydrophilic polyamines in their makeup. Most have amine values greater than 300. Almost all polyamide type resins ...