… resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms. …
Explanatory notes
… resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms. … (1) Polyacetals . Polymers obtained from an aldehyde, normally formaldehyde, and characterised by the presence of … automobile instrument housings, doorknobs, pump and air impellers, shoe heels, mechanical toys, plumbing fittings, …