首页 / 专利库 / 燃料种类 / 燃料气体 / 天然气 / 酸性气体 / Method of preventing corrosion in connection with extrusion of mixtures containing polyvinyl chloride and wood flour or similar cellulosic material, and analogous mixtures containing polystyrene or acrylonitrile-butadiene-styrene resin, respectively

Method of preventing corrosion in connection with extrusion of mixtures containing polyvinyl chloride and wood flour or similar cellulosic material, and analogous mixtures containing polystyrene or acrylonitrile-butadiene-styrene resin, respectively

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专利汇可以提供Method of preventing corrosion in connection with extrusion of mixtures containing polyvinyl chloride and wood flour or similar cellulosic material, and analogous mixtures containing polystyrene or acrylonitrile-butadiene-styrene resin, respectively专利检索,专利查询,专利分析的服务。并且The invention provides a method of preventing corrosion and wear caused by corrosion in connection with extrusion of a mixture containing polyvinyl chloride and wood flour or similar cellulosic material and analogous mixtures with polystyrene or acrylonitrile-butadiene-styrene resin, respectively. In order to neutralize acidic gaseous matter originating from the cellulosic material contained in the mixture, the extrusion is effected in the presence of at least one gaseous alkaline compound.,下面是Method of preventing corrosion in connection with extrusion of mixtures containing polyvinyl chloride and wood flour or similar cellulosic material, and analogous mixtures containing polystyrene or acrylonitrile-butadiene-styrene resin, respectively专利的具体信息内容。

1. A METHOD OF PREVENTING CORROSION AND WEAR CAUSED BY CORROSION IN CONNECTION WITH EXTRUSION OF A MIXTURE COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE, POLYSTYRENE AND ACRYLONITRILE-BUTADIENE-STYRENE RESINS AND PARTICULATE CELLULOSIC MATERIAL WHICH COMPRISES EFFECTING THE EXTRUSION IN THE PRESENCE OF AT LEAST ONE GASEOUS ALKALINE COMPOUND, IN ORDER TO NEUTRALIZE ACIDIC GASEOUS ALKAORIGINATING FROM THE CELLULOSIC MATERIAL.
2. A method according to claim 1, in which the gaseous alkaline compound is added in gaseous form.
3. A method according to claim 1, in which the gaseous alkaline compound is formed in situ in the extruder by volatilization of an additive to the mixture.
4. A method according to claim 3, in which the gaseous alkaline compound is an organic amine.
5. A method according to claim 1, in which the gaseous alkaline compound is formed in the extruder by thermal degradation oF an additive to the mixture.
6. A method according to claim 5, in which the additive comprises an ammonium salt.
7. A method according to claim 5, in which the additive comprises urea.
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