摘要:
A process for the production of a polymer containing monomer units of butane-1,4-diamine and 1,10-decanedioic acid (PA-410) having a viscosity number (VN) of at least 105 ml/gram includes making a solution of a salt of butane-1,4-diamine and 1,10-decanedioic acid in water, concentrating the solution of the salt at a temperature of between 100 and 180° C. and a pressure of between 1.0 and 3.0 bar to a water content of between 4 and 8 wt %, producing a prepolymer from the salt containing monomer units of butane-1,4-diamine and 1,10-decanedioic acid at a temperature of between 185 and 205° C., and thereafter subjecting the prepolymer to post condensation.
摘要:
A process for the production of a polymer containing monomer units of butane-1,4-diamine and 1,10-decanedioic acid (PA-410) comprising the steps of: 1) making a solution of a salt of butane-1,4-diamine and 1,10-decanedioic acid in water, 2) concentrating the solution of the salt at a temperature of between 100 and 180° C. and a pressure of between 1.0 and 3.0 bar to a water content of between 4 and 8 wt %, 3) producing from the salt a prepolymer containing monomer units of butane-1,4-diamine and 1,10-decanedioic acid at a temperature of between 185 and 205° C. and 4) post condensation of the prepolymer. Also claimed is PA-410 having a viscosity number (VN) of at least 100 ml/gram.
摘要:
A process for preparation of a polyamide PA-4X containing monomer units of 1,4-diaminobutane and an aliphatic linear dicarboxylic acid X with at least 8 carbon atoms, which contains the following steps: 1) making a solution comprising a salt of 1,4-diaminobutane and the aliphatic linear dicarboxylic acid and water, at a temperature at which the salt dissolves; 2) concentrating the solution of the salt at a temperature above the crystallization temperature of the salt, at a pressure of at most 7 barA to a water content of between 0 and 30 wt % based on the total amount of solution, 3) producing a polymer from the solution obtained by step 2, while keeping the polymer in a melt and at a pressure of less than 18 barA, 4) depressurizing the polymer obtained at step 3 while keeping the polymer in the melt to further polymerize the polymer. In an preferred embodiment the aliphatic linear dicarboxylic acid is 1,10-decanedioic acid. Also claimed is a polyamide 410 having a viscosity number (VN) of at least 100 ml/gram.
摘要:
A process for preparation of a polyamide PA-4X containing monomer units of 1,4-diaminobutane and an aliphatic linear dicarboxylic acid X with at least 8 carbon atoms, which contains the following steps: 1) making a solution comprising a salt of 1,4-diaminobutane and the aliphatic linear dicarboxylic acid and water, at a temperature at which the salt dissolves; 2) concentrating the solution of the salt at a temperature above the crystallization temperature of the salt, at a pressure of at most 7 barA to a water content of between 0 and 30 wt % based on the total amount of solution, 3) producing a polymer from the solution obtained by step 2, while keeping the polymer in a melt and at a pressure of less than 18 barA, 4) depressurizing the polymer obtained at step 3 while keeping the polymer in the melt to further polymerize the polymer. In an preferred embodiment the aliphatic linear dicarboxylic acid is 1,10-decanedioic acid. Also claimed is a polyamide 410 having a viscosity number (VN) of at least 100 ml/gram.
摘要:
Polyamide composition comprising a first polyamide, characterized in that the composition further comprises polyamide-PXD10 in an amount of at least 0.01 wt %, based on the total amount of polyamides in the composition. In a preferred embodiment of the invention, the first polyamide is an aliphatic polyamide chosen from the group of polyamide-6, polyamide-66 and polyamide-46. A fuel part, comprising the polyamide composition is also claimed.
摘要:
A process for the production of a polyamide containing monomeric units of 1,4-butylene diamine, an aliphatic dicarboxylic acid having 6-12 carbon atoms and a fatty acid based dicarboxylic acid and/or diamine derived there from, which process comprises the steps of: a) making an aquous salt mixture containing 1,4-butylene diamine, the aliphatic dicarboxylic acid having 6-12 carbon atoms and the fatty acid based dicarboxylic acid and/or diamine derived there from, the mixture containing less than 50 wt % water and distilling the mixture to less than 15 wt % of water at a pressure of less than 16 barg, while keeping the mixture at a temperature high enough to keep it liquid, b) starting the polymerization of the mixture obtained in step a) by increasing the temperature until to at least 180° C. until at least 80% of the reactive groups has been converted, c) optionally supplying further 1,4-butylene diamine, an aliphatic dicarboxylic acid having 6-12 carbon atoms and a fatty acid based dicarboxylic acid and/or diamine derived there from to the reaction mixture. The invention further relates to the polyamides obtained, a composition comprising the polyamide and the shaped articles made out of the composition.
摘要翻译:一种制备含有1,4-丁二胺,6-12个碳原子的脂族二羧酸和由其衍生的脂肪酸二羧酸和/或二胺的单体单元的聚酰胺的方法,该方法包括以下步骤: :a)制备含有1,4-丁二胺,6-12个碳原子的脂族二羧酸和由其衍生的脂肪酸二羧酸和/或二胺的含水混合物,混合物含有少于50重量%的水 并在小于16巴的压力下将混合物蒸馏成小于15重量%的水,同时将混合物保持在足够高的温度以保持其液体,b)通过增加步骤a)中获得的混合物的聚合开始 直到至少180℃直至至少80%的反应性基团已经转化,c)任选地提供另外的1,4-丁二胺,具有6-12个碳原子的脂族二羧酸和基于脂肪酸的 d 二羧酸和/或二胺衍生自反应混合物。 本发明还涉及获得的聚酰胺,包含聚酰胺的组合物和由组合物制成的成型制品。