| http://www.w3.org/ns/prov#value | - However, these processes often have drawbacks, such as the inability to control the products obtained when more than one isocyanate is used, and particularly for polymeric carbodiimides, the ability to produce polymers with high carbodiimidecontents.U.S. Pat. No. 4,137,386 discloses the preparation of polystyrene polymers containing dihydrocarbyl arsyl oxide radicals attached to the polymer chain.
|
