a polymer of propylene used as a thermoplastic molding material.
The preparation of a kind of environmental protection type amino molding material has been narrated. Its environmental protection norms met the needs of Germany Volkswagen Auto Company's requirement.
It is an effective way of eliminating the occurrence of silicosis in fettling workers by substituting silica with limestone as molding material in steel casting factory.
Amino molding materials modified by phenolic resin possessed better processing properties and increased toughness.
