Modifiers matching rubber:

• thermoset,
• conductive,
• natural,
• porous,
• soft,
• ordinary,
• raw,
• softer,
• organic,
• conventional,
• elastic,
• expensive,
• special,
• polar,
• resilient,
• liquid,
• inexpensive,
• hard,
• reliable,
• stock,

Simple categories matching thermoset:

• plastic,
• resin,
• system,
• polymer,
• elastomer,
• material,
• adhesive,
• rubber,
• polyester,