{
  "$type": "site.standard.document",
  "description": "A rubber composition containing a rubber component having an olefinic double bond, and an isobutylene polymer having a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2), wherein the content of a low molecular weight substance…",
  "path": "/patents/974703",
  "publishedAt": "2014-05-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/00",
    "JX NIPPON OIL & ENERGY CORP [JP]"
  ],
  "textContent": "A rubber composition containing a rubber component having an olefinic double bond, and an isobutylene polymer having a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2), wherein the content of a low molecular weight substance whose molecular weight is 1000 or less in the isobutylene polymer is 5% by mass or less based on the total amount of the isobutylene polymer. [wherein X represents a divalent group, Y represents a substituted or unsubstituted alicyclic group having an unsaturated bond, and n represents 0 or 1.]",
  "title": "RUBBER COMPOSITION, CROSSLINKED RUBBER COMPOSITION, PNEUMATIC TIRE, AND METHOD FOR PRODUCING ISOBUTYLENE POLYMER"
}