Halogen containing polymer compounds containing modified zeolite stabilizers

Abstract

The present invention relates to a halogen containing polymer compound containing a modified zeolite stabilizer. The modified zeolite stabilizer has a small particle diameter, narrow particle size distribution and less than 10 weight percent water. The modified zeolite stabilizer is formed by shock annealing, coating or a combination of the two methods.

We claim:  
     
         1 . A halogen containing compound comprising a halogen containing polymer and a modified zeolite stabilizer.  
     
     
         2 . A halogen containing compound as claimed in  claim 1 , wherein said modified zeolite stabilizer has a mean particle diameter in the range of 0.25 to about 1.5 microns.  
     
     
         3 . A halogen containing compound as claimed in  claim 1 , wherein said modified zeolite stabilizer has a <90% value particle diameter of about 0.30 to about 3 microns.  
     
     
         4 . A halogen containing compound as claimed in  claim 1 , wherein said modified zeolite stabilizer has a water content of less than 10 weight percent.  
     
     
         5 . A halogen containing compound as claimed in  claim 1 , wherein said halogen containing polymer is chosen from the group consisting essentially of polyvinyl chloride, chlorinated polyvinyl chloride, polyvinylidene chloride, polyvinyl bromide, polyvinyl fluoride, polyvinylidene fluoride, copolymers of vinyl chloride with a copolymerizable ethylenically unsaturated monomer, vinyl acetate, vinyl butyrate, vinyl benzoate, alkyl fumarates and maleates, vinyl propionate, alkyl acrylates, alkyl methacrylates, methyl alpha-chloracrylates, styrene, vinyl ethers, vinyl ketones, acrylonitrile, chloroacrylonitrile, allylidene diacetate, chloroallylidene diacetate, ethylene and propylene and any combinations of the foregoing.  
     
     
         6 . A halogen containing compound as claimed in  claim 5 , wherein said halogen containing polymer is chlorinated polyvinyl chloride.  
     
     
         7 . A halogen containing polymer as claimed in  claim 5 , wherein said halogen containing polymer is polyvinyl chloride.  
     
     
         8 . A halogen containing polymer as claimed in  claim 1  wherein said modified zeolite is present in an amount from about 0.5 to about 10 parts per hundred halogen containing resin.  
     
     
         9 . A halogen containing polymer as claimed in  claim 6 , having a dynamic thermal stability at 220 degrees C. of about 10 to about 60 minutes.  
     
     
         10 . A halogen containing polymer as claimed in  claim 6  having a Notched Izod in the range of about 1.0 to about 20 (ft.lb/in.).  
     
     
         11 . A halogen containing polymer as claimed in  claim 6 , having a heat distortion temperature in the range of about 80° C. to about 140° C. degrees.  
     
     
         12 . A halogen containing polymer as claimed in  claim 6 , having tensile strength in the range of about 5,000 to about 10,000 psi.  
     
     
         13 . A halogen containing polymer as claimed in  claim 1 , wherein said modified zeolite is a hydrated silicate of aluminum and sodium.  
     
     
         14 . A halogen containing polymer as claimed in  claim 13 , wherein modified zeolite has a reduced water content.  
     
     
         15 . A halogen containing polymer as claimed in  claim 14 , wherein said reduced water content is content due to shock annealing.  
     
     
         16 . A halogen containing polymer as claimed in  claim 14 , wherein said reduced water content is content due to a coating on said modified zeolite.  
     
     
         17 . A halogen containing polymer as claimed in  claim 1 , wherein said dynamic thermal stability is increased about 10% to about 300% over a control.  
     
     
         18 . A method of forming a stabilized halogen containing compound comprising: 
 mixing a halogen containing resin with a modified zeolite stabilizer.    
     
     
         19 . A method of forming a stabilized halogen containing compound as claimed in  claim 18 , wherein said wherein said modified zeolite stabilizer has a mean particle diameter in the range of 0.25 to about 1.5 microns.  
     
     
         20 . A method according to  claim 18 , wherein said modified zeolite stabilizer has a <90% value particle diameter of about 0.30 to about 3 microns.  
     
     
         21 . A method according to  claim 18 , wherein said modified zeolite stabilizer has a water content of less than 10 weight percent.  
     
     
         22 . A method according to  claim 18 , wherein said halogen containing polymer is chosen from the group consisting essentially of polyvinyl chloride, chlorinated polyvinyl chloride, polyvinylidene chloride, polyvinyl bromide, polyvinyl fluoride, polyvinylidene fluoride, copolymers of vinyl chloride with a copolymerizable ethylenically unsaturated monomer, vinyl acetate, vinyl butyrate, vinyl benzoate, alkyl fumarates and maleates, vinyl propionate, alkyl acrylates, alkyl methacrylates, methyl alpha-chloracrylates, styrene, vinyl ethers, vinyl ketones, acrylonitrile, chloroacrylonitrile, allylidene diacetate, chloroallylidene diacetate, ethylene and propylene and any combinations of the foregoing.  
     
     
         23 . A method according to  claim 22 , wherein said halogen containing polymer is chlorinated polyvinyl chloride.  
     
     
         24 . A method according to  claim 22 , wherein said halogen containing polymer is polyvinyl chloride.  
     
     
         25 . A method according to  claim 18 , wherein said modified zeolite is present in an amount from about 0.5 to about 10 parts per hundred halogen containing resin.  
     
     
         26 . A method according to  claim 23 , wherein said halogen containing compound with the modified zeolite has a dynamic thermal stability at 220° C. of about 10 to about 60 minutes.  
     
     
         27 . A method according to  claim 23 , wherein said halogen containing compound with the modified zeolite has a notched izod in the range of about 1.0 to about 20 ft.lb./in.  
     
     
         28 . A method according to  claim 23 , wherein said halogen containing compound with the modified zeolite has a heat distortion temperature in the range of about 80° C. to about 140° C. degrees.  
     
     
         29 . A method according to  claim 23 , wherein said halogen containing compound with the modified zeolite has a tensile strength in the range of about 5,000 to about 10,000 psi.  
     
     
         30 . A method according to  claim 18 , wherein said modified zeolite is a hydrated silicate of aluminum and sodium.  
     
     
         31 . A method according to  claim 18 , wherein said modified zeolite is shock annealed.  
     
     
         32 . A method according to  claim 18 , wherein said modified zeolite is coated with an inorganic, organic, or low molecular weight coating in order to prevent water from entering zeolite.  
     
     
         33 . A method according to  claim 33 , wherein said coating is polymethyl siloxane.  
     
     
         34 . A method according to  claim 33 , wherein said coating is dibutyl thioglycolate.  
     
     
         35 . A halogen containing compound wherein said modified zeolite stabilizer is found in the range of 0.5 parts to 10 parts per 100 parts of halogen containing polymer.  
     
     
         36 . A halogen containing compound according to  claim 1 , wherein said modified zeolite is present in an amount of at least 0.05 parts per hundred parts of halogen containing resin.  
     
     
         37 . A halogen containing compound according to  claim 1  further comprising a tin stabilizer.  
     
     
         38 . A halogen containing compound according to claim 37  comprising a stabilizer selected from a group consisting of an alkyl tin maleate stabilizer, an alkyl tin thioglycolate stabilizer, and mixtures thereof.  
     
     
         39 . A halogen containing compound according to claim 38 , whererin the said halogen containing polymer is polyvinyl chloride and the tin stabilizer is an alkyl tin thioglycolate.  
     
     
         40 . A halogen containing compound according to  claim 38 , wherein the said halogen containing polymer is chlorinated polyvinyl chloride and the tin stabilizer is an alkyl tin maleate.