A kind of coating autohension polyvinylidene emulsions and preparation method thereof

A kind of coating autohension polyvinylidene emulsions and preparation method thereof

  • CN 102,876,149 B
  • Filed: 09/27/2012
  • Issued: 04/06/2016
  • Est. Priority Date: 09/27/2012
  • Status: Active Grant
First Claim
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1. be coated with the preparation method with autohension polyvinylidene emulsions, it is characterized in that the method comprises the steps, each content of subordinate is all weight percentage:

  • (1) vinylidene chloride 45-60% is got respectively, vinylformic acid 1-3%, butyl acrylate 2-5%, β

    -dimethyl-aminoethylmethacrylate 0.5-5%, vinyl cyanide 0.5-3% five kinds of monomers, chain initiator 0.3-0.5%, emulsifying agent 0.1-1%, defoamer 0.1-0.5% and softening water 35.5-37%, be positioned in respective independently Raw material pail, more than/3rd monomers of each total amount will be accounted for successively, auxiliary agent and softening water join in reactor and mix, open and stir, stirring velocity is 120-200 rev/min, slowly be warmed to 55-70 DEG C, carry out prepolymerization, again successively by remaining monomer, chain initiator, emulsifying agent, defoamer and softening water added equably continuously in 1 hour, continue to stir 1-2 hour, cooling obtains the modification PVDC copolymer emulsion that solid content is 63-64.5% after leaving standstill,(2) get above-mentioned obtained modification PVDC copolymer emulsion, put into a stainless steel vessel, open and stir, stirring velocity is set as 120 revs/min, get the amino silicane coupling agent of 0.5-5% again, surface slip agent 3-5%, release agent 3-5%, softening water 13.5-20%, add in PVDC copolymer emulsion, stir timing and start, and to set churning time be 1 hour, finally filter discharging, i.e. obtained coating autohension PVDC emulsion.

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