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Grafted polymers as gas hydrate inhibitors

  • US 6,867,262 B1
  • Filed: 07/11/2000
  • Issued: 03/15/2005
  • Est. Priority Date: 07/28/1999
  • Status: Expired due to Term
First Claim
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1. A graft polymer comprising:

  • a hydrophilic base polymer which is a polyalkylene glycol, a polyether or a polymer having at least one heteroatom in the main chain, with the proviso that polyphenylene ether is excluded as a base polymer, having a N-vinyllactam grafted thereon.

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