Moisture-hardening adhesives and sealants
    4.
    发明申请
    Moisture-hardening adhesives and sealants 审中-公开
    水分硬化粘合剂和密封剂

    公开(公告)号:US20070260031A1

    公开(公告)日:2007-11-08

    申请号:US11796421

    申请日:2007-04-27

    IPC分类号: C08G18/00

    摘要: The invention relates to moisture-curable adhesive or sealant compositions comprising a) prepolymers based on aliphatic polyisocyanates and having isocyanate contents of 2 to 20 wt. %, and b) bis(dimethylaminoethyl)ether as catalyst. The compositions exhibit good storability, processability can be adjusted within wide limits and also provide rapid through-hardening.

    摘要翻译: 本发明涉及可湿气固化的粘合剂或密封剂组合物,其包含a)基于脂族多异氰酸酯的预聚物,并且异氰酸酯含量为2-20wt。 %,b)双(二甲基氨基乙基)醚作为催化剂。 组合物表现出良好的保存性,可加工性能在宽范围内进行调节并且还提供快速的通硬化。

    Wood adhesives
    5.
    发明授权
    Wood adhesives 失效
    木材胶粘剂

    公开(公告)号:US07056415B2

    公开(公告)日:2006-06-06

    申请号:US10014053

    申请日:2001-12-11

    申请人: Walter Meckel

    发明人: Walter Meckel

    IPC分类号: C08G18/10 C08G18/40

    摘要: The present invention relates to a process for bonding two or more wood substrates by using as the adhesive isocyanate-terminated prepolymers having an isocyanate content of 8 to 20 wt. % and containing the reaction product of a) at least one organic polyisocyanate with b) at least one organic polyhydroxyl compound containing the reaction products of i) organic polyisocyanates with ii) polyamines, hydrazines and/or hydrazides having primary and/or secondary amino groups dispersed in a iii) polyethers having at least two hydroxyl groups and a number average molecular weight of 500 to 12,000; and, the present invention also relates to the bonded substrates obtained by this process.

    摘要翻译: 本发明涉及通过使用具有异氰酸酯含量为8〜20重量%的异氰酸酯封端的预粘合剂的粘合剂来粘合两个或多个木质基材的方法。 并且含有a)至少一种有机多异氰酸酯与b)至少一种含有i)有机多异氰酸酯与ii)有机多异氰酸酯的反应产物的有机多羟基化合物与ii)具有伯和/或仲氨基的多胺,肼和/或酰肼的反应产物 分散在iii)具有至少两个羟基并且数均分子量为500至12,000的聚醚; 并且本发明还涉及通过该方法获得的粘合基材。

    Rapidly crystallizing polyurethane systems
    7.
    发明授权
    Rapidly crystallizing polyurethane systems 失效
    快速结晶聚氨酯系统

    公开(公告)号:US5115073A

    公开(公告)日:1992-05-19

    申请号:US580717

    申请日:1990-09-11

    摘要: The present invention is directed to a polyurethane system containing isocyanate groups prepared by reactingA) 70 to 98 parts by weight of at least one polyester diol having a melting point of 30.degree. C. to 60.degree. C. and a molecular weight of 800 to 8,000,B) 2 to 30 parts by weight of at least one polyester diol having a melting point of 65.degree. C. to 150.degree. C. and a molecular weight of 600 to 8,000, andC) no more than 1 mole of a diol having a molecular weight of less than 600 per moles of A) plus B), with,D) at least one organic polyisocyanate, the ratio of isocyanate groups to hydroxyl groups is between 3:1 and 1.2:1.

    摘要翻译: 本发明涉及含有异氰酸酯基团的聚氨酯体系,其通过使A)70〜98重量份的至少一种熔点为30℃〜60℃,分子量为800〜 8,000,B)2〜30重量份的至少一种聚酯二醇,其熔点为65℃至150℃,分子量为600至8,000,C)不超过1摩尔的二醇 具有小于600摩尔A)+ B)的分子量,D)至少一种有机多异氰酸酯,异氰酸酯基与羟基的比例在3:1至1.2:1之间。

    Magnetic storage medium
    8.
    发明授权
    Magnetic storage medium 失效
    磁存储介质

    公开(公告)号:US4477531A

    公开(公告)日:1984-10-16

    申请号:US396238

    申请日:1982-07-08

    摘要: The present invention relates to a magnetic storage medium consisting of a non-magnetic layer support and, applied thereto, a binder-containing magnetic layer, the binder consisting of from 25 to 100% of a thermoplastic polyurethane substantially free from reactive terminal groups obtained by reacting a linear polyester of at least one dicarboxylic acid containing from 2 to 8 carbon atoms and/or hydroxy carboxylic acid containing from 4 to 6 carbon atoms and at least one glycol containing from 2 to 6 carbon atoms, the polyester having a molecular weight of from 1200 to 6000, at least one diisocyanate and a mixture of at least two glycols containing from 2 to 20 carbon atoms, the molar fraction of the individual components not exceeding 0.8. The polyurethane has a hardness of from 80 to 100 Shore A, a tensile strength of from 30 to 75 MPa and a breaking elongation of from 320 to 520%.

    摘要翻译: 本发明涉及一种由非磁性层载体组成的磁存储介质,并在其上施加含粘合剂的磁性层,该粘合剂由25-100%的热塑性聚氨酯组成,其基本上不含由 使包含2至8个碳原子的至少一种二羧酸和/或含有4至6个碳原子的羟基羧酸和至少一种含有2至6个碳原子的二醇的线性聚酯反应,所述聚酯的分子量为 1200至6000,至少一种二异氰酸酯和至少两种含有2-20个碳原子的二醇的混合物,各组分的摩尔分数不超过0.8。 聚氨酯的硬度为80至100肖氏A,拉伸强度为30至75MPa,断裂伸长率为320至520%。

    Molecular weight control of polyurethane elastomers
    9.
    发明授权
    Molecular weight control of polyurethane elastomers 失效
    聚氨酯弹性体的分子量控制

    公开(公告)号:US4071505A

    公开(公告)日:1978-01-31

    申请号:US622594

    申请日:1975-10-15

    CPC分类号: C08G18/2815 C08G18/10

    摘要: Polyurethane elastomers are prepared by reacting organic polyisocyanates with organic polyhydroxyl compounds and a mono-functional secondary hydroxyl group containing chain terminator. The chain terminator can be added to the polyhydroxyl compound prior to the reaction with the polyisocyanate.

    摘要翻译: 聚氨酯弹性体通过有机多异氰酸酯与有机多羟基化合物和含单官能的含羟基的链终止剂反应来制备。 在与多异氰酸酯反应之前,可以将链终止剂加入到多羟基化合物中。