Which of the following polymer is used in the manufacture of wood laminates?

Formaldehyde-based resins are widely used in the wood and laminate industry. Let us consider each option.

cis-Polyisoprene is natural rubber, which is an elastomer and is not used in wood laminates.

Melamine formaldehyde resin is a thermosetting polymer used primarily for making unbreakable crockery and decorative laminate surface coatings.

Urea formaldehyde resin is a thermosetting polymer formed by the condensation polymerisation of urea and formaldehyde. It is extensively used as an adhesive and binding agent in the manufacture of plywood, particle boards, and wood laminates due to its strong bonding properties and cost-effectiveness.

Phenol formaldehyde resin (Bakelite) is used in electrical fittings, handles, and similar moulded products, not primarily for wood laminates.

Therefore, urea formaldehyde resin is the polymer used in the manufacture of wood laminates.