PTAd poly glycol

PTAd Poly(tettamethylene adipate) glycol H0-i(CH2)j-0C0(CH2)4-C001—(CHj- r-OH... [Pg.177]

Soft Segments. The soft segments are the linear reaction products of the diisocyanate component, e.g., MDI (diphenylmethane-p,p -diiso-cyanate), and the macroglycol component, e.g., PTAd [poly (tetramethyl-ene adipate) glycol], as is seen in Figure 3. [Pg.90]

B. (3.0) Ratio Polymers Effect of Urethane Group Concentration. Figure 5 shows the polymerization viscosity-time-temperature relations for a (3.0 ratio) thermoplastic poly(ester-urethane) elastomer, Polymer 9. This polymer was made from reactants VI, IV, and X (Table I) the polyester glycol component being intermediate acid number PTAd (0.30). [Pg.452]

Below, we first consider the shape memory effect, as well as basic structure-property relationships of TPU having crystalline soft segments, e.g., poly(tetra-methylene adipate) glycol (PTAd, M = 2000), and hard segments composed of 4,4 -diphenylmethane diisocyanate (MDI) and ethylene glycol (EG) or ethylene diamine (EDA) [25],... [Pg.528]

Big Chemical Encyclopedia