1·Demulsifier TKQ comprises of phenol-amine resin block polyethers and quaternized polyamidoamine.
该破乳剂由酚胺树脂聚醚和聚酰胺-季铵盐两种组分组成。
2·The prepolymers most frequently used for the preparation of polyurethanes are either polyesters or polyethers.
最常用于制备聚氨酯预聚物要么是聚酯或聚醚。