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    • 1. 发明授权
    • Process for the production of radiation-crosslinked thermoplastic
polyurethanes
    • 辐射交联热塑性聚氨酯生产工艺
    • US4762884A
    • 1988-08-09
    • US40428
    • 1987-04-20
    • Wilhelm GoyertJurgen WinklerHermann PerreyHerbert Heidingsfeld
    • Wilhelm GoyertJurgen WinklerHermann PerreyHerbert Heidingsfeld
    • C08J3/28C08F2/46C08F2/54C08F283/00C08F299/06C08G18/00C08L75/00C08L75/04C08G18/40
    • C08F299/06
    • The invention is directed to a process for the production of polyurethanes suitable for thermoplastic processing comprising mixingI. at least 75% by weight of preformed thermoplastic polyurethane elastomers, or of a blend of(A) substantially bifunctional, compounds(B) substantially bifunctional chain-extending agents(C) organic diisocyanates and optionally(D) lubricants or other known additivessaid blend characterized in that it contains no peroxides and polymerization initiators which decompose into radicals under the effect of actinic light and further in that the molar ratio of the sum of said (A) and said (B) to said (C) is between 0.9 to 1.1, withII. (E) from 4 to 24% by weight of a crosslinking agent andIII. (F) from 0.01 to 3% by weight of a polymerization inhibitor and/or an antioxidant,by adding said II and said III to said I at a temperature below 230.degree. C., and the cooling the mixture to below 130.degree. C. in less than 5 minutes in a continuous extruder and optionally granulating the resulting polyurethane.
    • 本发明涉及一种用于生产适用于热塑性加工的聚氨酯的方法,其包括将I.至少75重量%的预成型热塑性聚氨酯弹性体或(A)基本上双官能的化合物(B)的混合物(B)基本上是双功能链 - 扩展剂(C)有机二异氰酸酯和任选的(D)润滑剂或其它已知的添加剂,所述共混物的特征在于其不含过氧化物和聚合引发剂,其在光化光的作用下分解成自由基,并且进一步地,总和的摩尔比 (A)和所述(B)至(C)之间的比例在0.9至1.1之间。 (E)4至24重量%的交联剂和III。 (F)0.01〜3重量%的阻聚剂和/或抗氧化剂,通过在低于230℃的温度下将所述II和所述III加入到所述I中,并将混合物冷却至130℃以下。 在连续挤出机中在不到5分钟的时间内,并任选地造粒得到的聚氨酯。
    • 2. 发明授权
    • Thermoplastic polyurethanes having a high heat stability, based on
naphthylene diisocyanate, their production and their use
    • 具有高热稳定性,基于亚萘基二异氰酸酯的热塑性聚氨酯,其制备及其用途
    • US4521582A
    • 1985-06-04
    • US637242
    • 1984-08-02
    • Wilhelm GoyertJurgen Winkler
    • Wilhelm GoyertJurgen Winkler
    • C08G18/00C08G18/10C08G18/65C08G18/76C08G18/32
    • C08G18/7678C08G18/10
    • This invention relates to novel, thermoplastically processible, branched polyurethanes based on naphthylene-1,5-diisocyanate which have good heat stability and are obtained by the claimed process. In the first stage of the process long-chain polyols are reacted with a first diisocyanate which is any diisocyanate other than naphthylene-1,5-diisocyanate in substoichiometric NCO quantities to produce an OH prepolymer which is then lengthened with excess napthylene-1,5-diisocyanate and with a chain lengthening mixture of short-chain diols and triols and/or polyols in specific ratios. The resulting semi-rigid, thermoplastic polyurethane elastomers are characterized by their good dimensional stability under heat, a good rebound elasticity (even at relatively high temperatures), acceptable low temperature flexibility and an outstanding resistance to wear which properties render them useful for the production of hydraulic seals, seals, rollers, buffers, tubes, bellows, plugs, cylinders, couplings and similar moldings.
    • 本发明涉及基于亚萘基-1,5-二异氰酸酯的热塑性加工性支化聚氨酯,其具有良好的热稳定性并且通过所要求的方法获得。 在该方法的第一阶段中,长链多元醇与作为亚化学计量NCO量的除亚萘基-1,5-二异氰酸酯以外的任何二异氰酸酯的第一二异氰酸酯反应以产生OH预聚物,然后用过量的萘二酚-1,5 二异氰酸酯和具有特定比例的短链二醇和三醇和/或多元醇的链延长混合物。 所得的半刚性热塑性聚氨酯弹性体的特征在于其在加热下具有良好的尺寸稳定性,良好的回弹弹性(即使在相对高的温度下),可接受的低温柔韧性和优异的耐磨性,这些性质使其对于生产 液压密封件,密封件,辊子,缓冲器,管子,波纹管,塞子,气缸,联轴器和类似的模制品。
    • 4. 发明授权
    • Thermoplastic polyurethanes for processing in extruders and/or on
calenders
    • 用于在挤出机和/或压延机中加工的热塑性聚氨酯
    • US4371684A
    • 1983-02-01
    • US271308
    • 1981-05-29
    • Bernd QuiringGeorg NiederdellmannWilhelm GoyertHans Wagner
    • Bernd QuiringGeorg NiederdellmannWilhelm GoyertHans Wagner
    • C08G18/10C08G18/61C08G18/65C08G18/42
    • C08G18/6511C08G18/10C08G18/61
    • The invention is directed to a process extruding or melt roll calendering thermoplastic polyurethanes wherein the polyurethanes used are synthesized from p1 (a) one or more relatively high molecular weight substantially linear polyols having molecular weights in the range from 400 to 10,000(b) diphenyl methane and/or hexamethylene diisocyanate and(c) a mixture of 85 to 99% by weight of 1,4-butane diol and 1 to 15% by weight of at least one co-extender selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, diethylene 1,2-propane diol, 1,3-butane diol, 1,6-hexane diol, 2-ethyl-1,3-hexane diol, 2,2-dimethyl-1,3-propane diol, 1,4-bis-hydroxymethyl cyclohexane, hydroquinone-bis-hydroxyethyl ether, and mixtures thereof, the equivalent ratio of NCO groups in component (B) to the Zerewitinoff-active hydrogen atoms in components (A) and (C) being from 0.9:1 to 1.2:1 and the molar ratio of component (A) to (C) being from 1:20 to 5:1.
    • 本发明涉及一种挤出或熔融辊压延热塑性聚氨酯的方法,其中使用的聚氨酯由p1(a)一种或多种相对高分子量的基本上线性的多元醇合成,分子量范围为400至10,000(b)二苯基甲烷 和/或六亚甲基二异氰酸酯和(c)85-99重量%的1,4-丁二醇和1-15重量%的选自乙二醇,二甘醇的至少一种共扩链剂的混合物 三甘醇,二乙二醇1,2-丙二醇,1,3-丁二醇,1,6-己二醇,2-乙基-1,3-己二醇,2,2-二甲基-1,3-丙二醇, 1,4-双羟甲基环己烷,氢醌双羟乙基醚及其混合物,组分(B)中的NCO基与组分(A)和(C)中的Zerewitinoff活性氢原子的当量比为0.9 :1〜1.2:1,成分(A)与(C)的摩尔比为1:20〜5:1。