Rubber processed 3,000+ years ago, with recipes tuned for each use (Gulf Coast of Mexico and Mesoamerica; balls dated about 1600 BCE; studies 1999 and 2010)
Record: the document says itPattern: documents line upLens: our readingOpen: not yet proven
Year: 1600 · Places: Gulf Coast, Mexico
SUMMARYRubber processed 3,000+ years ago, with recipes tuned for each use (Gulf Coast of Mexico and Mesoamerica; balls dated about 1600 BCE; studies 1999 and 2010) [Connections: Tech of the Americas, Nov 5, 2026]
RECORDWikipedia: about a dozen rubber balls from the Olmec El Manatí bog are "dated to roughly 1600 BCE." "The latex was made into rubber by mixing it with the juice of what was likely Ipomoea alba [morning glory]," "a process which preceded Goodyear's vulcanization by several millennia" (citing Hosler, Burkett & Tarkanian, "Prehistoric Polymers: Rubber Processing in Ancient Mesoamerica," Science 284:1988–1991, 1999). MIT News (2010) on Dorothy Hosler and Michael Tarkanian: "A 50-50 blend of the latex and morning glory produced maximum elasticity, or bounciness, perfect for the rubber balls"; a "three-to-one mix of latex to morning glory... provides the most durable material" (sandals); for joining, "pure latex seems to work best." The article notes "Charles Goodyear is credited with having invented vulcanization" in the mid-19th century
PATTERNPolymer chemistry with controlled ratios for bounce, wear and glue: material science, not accident
LENS (WW9)Goodyear got the patent; the Gulf Coast had the recipe book
OPENThe Science abstract and the 2010 Latin American Antiquity paper were not opened directly (science.org blocked). Note: the process is "vulcanization-like" in result, not sulfur vulcanization; keep that wording