Nylon was the first commercially successful synthetic thermoplastic polymer. Commercially, nylon polymer is made by reacting monomers which are either lactams, acid/amines or stoichiometric mixtures of diamines (-NH2) and diacids (-COOH). Mixtures of these can be polymerized together to make copolymers.
Princess Diana Wedding Cake. Official Cake Wedding cake and cooks for the wedding of Prince Charles and Lady Diana Spencer in 1981. Getty Images / Terry Fincher. The official cake for the wedding dinner was made by the Naval Armed Forces, appropriate for the wedding of Prince Charles, a naval commander.
Engagement ring of Diana, Princess of Wales. Lady Diana Spencer and Charles, Prince of Wales, became engaged in February 1981. Her engagement ring consists of 14 solitaire diamonds surrounding a 12-carat oval blue Ceylon sapphire set in 18-karat white gold. It was created by jeweler Garrard and cost at the time, 28,000 pounds sterling.