Reactive Polymers with Carboxylic Acid Functionality

Reactive Polymers with Carboxylic Acid Functionality. . . ... [Pg.13]

Cyclic carbonate functional polymers have been explored on a limited basis over a number of years. The cyclic carbonate group is an attractive functional group due to its reactivity with primary amines at ambient or slightly elevated temperatures to form crosslinked networks [7]. Cyclic carbonate functional polymers will also react with carboxylic acid functional polymers [2] at higher temperatures to form crosslinked coatings. [Pg.303]

Telechelic polymers are macromolecules with reactive functional groups at the terminal ends of the chains. An example of telechelic polymers is polybutadiene with carboxylic acid end groups ... [Pg.4]

The interaction of the polymer with the filler is promoted by the presence of reactive functionality in the polymer, capable of chemical reaction or hydrogen bonding with the functionality, generally hydroxyl, on the surface of the filler. Thus, carboxyl-containing polymers, e.g. ethylene-acrylic acid copolymers and maleic anhydride- and acrylic acid-grafted polyethylene and polypropylene interact readily with fillers. [Pg.469]

The terminal carhanionic sites of "living" polymers can be reacted with various electrophilic compounds of yield (o)-functional polymers. Esters, nitriles, acid chlorides, anhydrides, lactones, epoxides, benzyl or allyl halogenides have been used for their high reactivity with metal organic sites, to yield appropriate functions.2 Carbon dioxide is also an efficient reagent to yield terminal carboxylic functions. [Pg.61]

Besides addition polymerization, the other general way to prepare polymers is known as condensation polymerization or step growth polymerization. Much of the pioneering work on condensation polymerization was conducted by Wallace Carothers while he was employed by DuPont. He recognized that many natural polymers are formed from monomers with two reactive functional groups. For example, proteins are polymers of amino acids, which contain both amine and carboxylic acid groups. The formation of amide bonds is used to connect one monomer to another. Carothers s attempts to imitate nature led to a whole industry based on condensation polymerization. [Pg.1070]