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    • 53. 发明授权
    • High wear resistance low compression set polyurethane
    • 高耐磨低压缩聚氨酯
    • US5656720A
    • 1997-08-12
    • US767442
    • 1991-09-30
    • Edward L. Schlueter, Jr.James F. SmithLucille M. Sharf
    • Edward L. Schlueter, Jr.James F. SmithLucille M. Sharf
    • C08G18/10C08G18/48C08G18/76
    • C08G18/7671C08G18/10C08G18/4854C08G18/76
    • A polyurethane elastomer obtained by the reaction of a polytetramethylene ether glycol having the formula HO[(CH.sub.2).sub.4 O].sub.n H where n is from 10 to 60, preferably 55 to 60, and from about 20 to about 95 parts preferably 22 to 26 parts, by weight per 100 parts by weight of said glycol of a diisocyanate selected from the group consisting of diphenylmethane diisocyanates, toluene diisocyanates, naphthalene diisocyanates and blends thereof and a sufficient amount of cross linking agents to provide a crosslinked elastomer, said cross linking agents comprising a mixture of from about 75% to 60% by weight of a diol having the formula HO(R.sub.1) OH where R.sub.1 is a straight or branched chain alkyl group having from 2 to 12 carbon atoms and from about 25% to 40% by weight of a triol having the formula R'--C--[(OH).sub.a (CH.sub.2 OH).sub.b ] where R' is H, CH.sub.3 or C.sub.2 H.sub.5, a is 0 or 1, b is 2 or 3 and a+b=3.
    • 通过使具有式HO [(CH 2)4 O] n H的聚四亚甲基醚二醇反应获得的聚氨酯弹性体,其中n为10至60,优选为55至60,和约20至约95份,优选为22至26份, 的二异氰酸酯选自二苯基甲烷二异氰酸酯,甲苯二异氰酸酯,萘二异氰酸酯及其共混物,以及足够量的交联剂以提供交联弹性体,所述交联剂包含: 约75%至60%重量的具有式HO(R 1)OH的二醇,其中R 1为具有2至12个碳原子的直链或支链烷基和约25至40重量% 具有式R'-C - [(OH)a(CH2OH)b]的三醇,其中R'是H,CH 3或C 2 H 5,a是0或1,b是2或3,a + b = 3。
    • 57. 发明授权
    • Sheet handling scuffer paddle wheel made of polyether urethane
    • 由聚醚聚氨酯制成的纸张处理刮板桨轮
    • US5142016A
    • 1992-08-25
    • US767431
    • 1991-09-30
    • Lucille M. SharfEdward L. Schlueter, Jr.Richard E. Carlston
    • Lucille M. SharfEdward L. Schlueter, Jr.Richard E. Carlston
    • B65H27/00C08G18/10C08G18/48
    • C08G18/4854B65H27/00C08G18/10B65H2401/10
    • A sheet handling apparatus for stacking successive sheets has a stacking tray, registration gate and a scuffer paddle wheel made of a polyurethane elastomer obtained by the reaction of a polytetramethylene ether glycol having the formula HO[(CH.sub.2).sub.4 O].sub.n H where n is from 10 to 60, preferably 55 to 60, and from about 20 to about 95 parts preferably 22 to 26 parts, by weight per 100 parts by weight of said glycol of a diisocyanate selected from the group consisting of diphenylmethane diisocyanates, toluene diisocyanates, naphthalene diisocyanates and blends thereof and a sufficient amount of cross linking agents to provide a crosslinked elastomer, said crosslinking agents comprising a mixture of from about 75% to 60% by weight of diol having the formula HO(R.sub.1)OH where R.sub.1 is a straight or branched chain alkyl group having from 2 to 12 carbon atoms and from about 25% to 40% by weight of a triol having the formula:R'--C[(OH).sub.a (CH.sub.2 OH).sub.b ]where R' is H, CH.sub.3 or C.sub.2 H.sub.5, a is 0 or 1, b is 2 or 3 and a+b=3.
    • 用于堆叠连续片材的片材处理装置具有堆叠托盘,对准门和由聚氨酯弹性体制成的刮板桨轮,所述聚氨酯弹性体通过具有式HO [(CH 2)4 O] n H的聚四亚甲基醚二醇反应而获得,其中n为10 至60重量%,优选55至60重量份,优选约20至约95重量份,优选22至26重量份,相对于每100重量份所述二醇选自二苯基甲烷二异氰酸酯,甲苯二异氰酸酯,萘二异氰酸酯和 共混物和足够量的交联剂以提供交联的弹性体,所述交联剂包含约75%至60%重量的式HO(R1)OH的二醇,其中R 1为直链或支链 具有2至12个碳原子的烷基和约25至40重量%的具有下式的三元醇:R'-C [(OH)a(CH2OH)b]其中R'是H,CH3或C2H5, a是0或1,b是2或3,a + b = 3。