Patents Assigned to HUNAN ASTAR BIOTECHNOLOGY LTD
  • Non-halogen activating agent used as flux
    Patent number: 8853417
    Abstract: A non-halogen active agent for a flux is a sulfonate formed by a sulfonic acid reacting with an organic base. The sulfonic acid can be an alkyl sulfonic acid, alkyl disulfonic acid, hydroxyl sulfonic acid or halogenated sulfonic acid. The organic base can be an organic amine, carbamidine, imidazole, phosphorus. The non-halogen active agent for a flux has the advantage of high activity and low corrosion.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: October 7, 2014
    Assignee: Hunan Astar Biotechnology Ltd.
    Inventors: Zongming Yi, Yi Liu
  • Non-halogen activating agent used as flux
    Publication number: 20120142938
    Abstract: A non-halogen active agent for a flux is a sulfonate formed by a sulfonic acid reacting with an organic base. The sulfonic acid can be an alkyl sulfonic acid, alkyl disulfonic acid, hydroxyl sulfonic acid or halogenated sulfonic acid. The organic base can be an organic amine, carbamidine, imidazole, phosphorus. The non-halogen active agent for a flux has the advantage of high activity and low corrosion.
    Type: Application
    Filed: March 8, 2010
    Publication date: June 7, 2012
    Applicant: HUNAN ASTAR BIOTECHNOLOGY LTD
    Inventors: Zongming Yi, Yi Liu