Phthalic Anhydride Polyester Polyol
Usoro polyols ndị a bụ isi polyester aromatic kwadebere site na polycondensation ma ọ bụ mgbanwe nke phthalic anhydride, diethylene glycol na akụrụngwa ndị ọzọ.A na-ejikarị ha eme ihe n'ọhịa nke ụfụfụ siri ike na adhesives.Ha nwere uru nke isi ísì dị ala, agba dị ala, ọrụ mmeghachi omume dị elu, nkwụsi ike hydrolysis dị mma, ọdịnaya aromatic dị elu, nkwụsi ike dị mma na mmiri nke ihe ndị mejupụtara, na nhazi ngwaahịa nwere ike gbanwee dịka ihe ndị ahịa chọrọ.
Usoro a nke polyester polyols nwere ike n'ọtụtụ ebe na refrjiraeto, oyi nchekwa, spraying, ike anyanwụ, thermal pipelines, ụlọ mkpuchi na ebe ndị ọzọ nke siri ike ụfụfụ mejupụtara, ụfọdụ nrapado ngwaahịa.
| usoro | Ihe | Uru Hydroxyl (mgKOH/g) | Uru acid (mgKOH/g) | Ọdịnaya mmiri (％) | Viscosity okpomọkụ ụlọ (25 ℃, cps) |
| Usoro nke phthalic anhydride na acids dibasic aromatic ndị ọzọ | PE-B175 | 170-180 | ≤1.0 | ≤0.05 | 9000-13000 |
| PE-B503 | 300-330 | ≤1.0 | ≤0.05 | 2000-4000 | |
| PE-D504 | 400-450 | ≤2.0 | ≤0.1 | 2000-4000 | |
| PE-D505 | 400-460 | ≤2.0 | ≤0.1 | 2000-4000 |
