{
  "patent_number": "US 2541851",
  "country": "US",
  "title": "How to Make Silly Putty Using Silicone and Zinc",
  "original_title": "Process for making puttylike elastic plastic, siloxane derivative composition containing zinc hydroxide",
  "summary": "A 1944 chemical process for turning liquid silicone oil into a bouncy, stretchable, putty-like material by adding boron compounds and zinc hydroxide.",
  "what_it_does": "The patent describes a three-step chemical process to create a unique elastic material. First, you heat liquid dimethylsiloxane with a boron-based catalyst, such as boric acid or borax, until it transforms into a solid, rubbery substance. Second, you incorporate a finely divided inorganic filler along with 12 percent zinc hydroxide by weight. Finally, you knead this mixture until it reaches a specific consistency that is both putty-like and elastic, allowing it to bounce like a ball or stretch like taffy.",
  "what_it_does_not_cover": [
    "Does not cover the use of non-silicone base polymers for creating elastic putty.",
    "Does not cover processes that exclude the specific addition of zinc hydroxide as a hardening or stabilizing agent.",
    "Does not cover liquid silicone compositions that have not been processed into a solid, elastic state via boron heating."
  ],
  "filed": "1944-12-23",
  "granted": "1951-02-13",
  "expires": "1968-02-13",
  "status": "expired",
  "holder": "General Electric Co",
  "holder_url": "https://patentbrief.org/company/general-electric-co",
  "inventors": [
    {
      "name": "James G E Wright",
      "url": "https://patentbrief.org/inventor/james-g-e-wright"
    }
  ],
  "times_cited": 80,
  "tags": [
    "materials",
    "consumer_electronics",
    "mechanical"
  ],
  "abstract": null,
  "url": "https://patentbrief.org/patent/us/2541851/silly-putty-bouncing-silicone",
  "markdown_url": "https://patentbrief.org/patent/us/2541851/silly-putty-bouncing-silicone/md",
  "google_patents_url": "https://patents.google.com/patent/US2541851",
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}