Special Grades
KURARAY LM-POLYMER
- A new type water-soluble polymer
  1. Grades and specifications


    Grades
    Items LM-10HD LM-20
    Volatiles (%, max) 3.0 3.0
    Hydrolysis(mole %) 38.0 - 42.0 38.0 - 42.0
    Viscosity (cps)* 4.5 - 5.7 3.0 - 4.0
    *Water/Methanol = 1/1 at 20

  2. Property

    1. LM-polymer has a self-emulsifying dispersibility, even with low hydrolyzed grade.

    2. LM-polymer can be dissolved in organic solvent, such as methanol, ethanol, acetone, Dimethyl sulfoxide.
      ( measurement condition : PVA concentration = 2%, churned state, 40)

    3. LM-polymer is self-dispersible in cold water. No organic solvent, such as methanol, is needed to disperse LM-polymer.

    4. LM-polymer can be melt-molded on the temperature150 - 170.

    5. In case of using as a secondary suspending agent for vinyl chloride polymerization, high porosity and an excellent absorptive property for plasticizer can be obtained with keeping bulk density.


  3. Storage

    LM-polymer should be strictly kept away from wet areas and naked flame. Ingress of moisture may cause block formation.

  4. Dissolving method

    LM-polymer should be slowly added into water at normal room temperature and sprinkled with fast stirring to avoid lump formation. After all the LM-polymer has been added, stirring speed should be reduced to prevent foaming. Keep agitation for about one and a half hours. The concentration recommended for a stock solution is 2 - 4 wt%. 2% solution is stable for about 3 weeks and 4% solution is about 2 weeks, at 20.

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