会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 15. 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。
    • 16. 发明授权
    • Thermoplastic polyurethanes and a two-stage process for their preparation
    • 热塑性聚氨酯及其制备的两阶段工艺
    • US3963656A
    • 1976-06-15
    • US546062
    • 1975-01-31
    • Ernst MeisertWilhelm Goyert
    • Ernst MeisertWilhelm Goyert
    • C08G18/10C08G18/32
    • C08G18/10
    • Polyurethane elastomers suitable for coating textiles, leather, paper and similar substrate and a multi-stage process for their production. The polyurethane elastomers are obtained fromA. a polyol with an average molecular weight between 900 and 5300,B. 4,4'-diisocyanatodiphenylmethane andC. a diol with a molecular weight below 500, characterized in that the equivalent ratio ((b)/(a)+(c)) is between 0.87 and 1 and in that (a) contains at least 40% by weight of a polyurethane of the formula ##EQU1## where R is a divalent group such as can be obtained by removing the hydroxyl groups from a diol which has a molecular weight of between 700 and 1750, andQ is a divalent aliphatic, cycloaliphatic, araliphatic or aromatic group which contains 2 to 20, and preferably, 4 to 15, carbon atoms; but Q is not ##SPC1##
    • 适合涂布纺织品,皮革,纸张和类似基材的聚氨酯弹性体,以及用于生产的多阶段工艺。 聚氨酯弹性体得自A.具有900和5300之间的平均分子量的多元醇,B,4,4'-二异氰酸亚氨基乙酯和C.具有以下分子量的二醇,其特征在于等同比((B) /(A)+(C))在0.87和1之间,并且其中(A)至少包含40质量%的配方HO-ROC-NH-Q-NH-COR-OH并行性平行OO的聚氨酯,其中 R是二价基团,例如可以通过从分子量为700〜1750的二醇除去羟基而获得,Q为含有2〜20的二价脂肪族,脂环族,芳脂族或芳族基团,优选 ,4至15个碳原子; 但Q不是
    • 18. 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。