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
    • 5. 发明授权
    • Process for the production of heat-resistant polyurethane urea elastomers
    • 生产耐热聚氨酯脲弹性体的方法
    • US4882409A
    • 1989-11-21
    • US245880
    • 1988-09-16
    • Gerhard GroglerAndreas RuckesHeinrich Hess
    • Gerhard GroglerAndreas RuckesHeinrich Hess
    • C08G18/10C08G18/32
    • C08G18/10C08G2101/0008C08G2101/0016C08G2101/0033
    • The present invention is directed to a process for the production of a polyurethane urea elastomer which comprises preparing a heterogeneous mixture of(a) a diaminodiphenylurea corresponding to the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, represent hydrogen or a C.sub.1 -C.sub.6 alkyl radical and wherein the amino groups are in the meta and/or para position to the urea group and(b) polyisocyanates and NH.sub.2 -or OH-groups containing compounds or a NCO-terminated prepolymer prepared from a polyisocyanate and a polyhydroxyl compound having a molecular weight of 400 to about 10,000, and subsequently reacting the heterogeneous system to form a polyurethane urea elastomer by heating the mixture to a temperature below the melting point of said diaminodiphenylurea.The present invention is also directed to heterogeneous reaction mixtures based on the above diaminodiphenylureas suspended in the above NCO-terminated prepolymers.
    • 本发明涉及一种制备聚氨酯脲弹性体的方法,其包括制备(a)对应于式“IMAGE”的二氨基二苯脲的不均匀混合物,其中R 1,R 2,R 3和R 4可以相同或不同, 不同的,代表氢或C1-C6烷基,其中氨基位于脲基的间位和/或对位,和(b)含有多异氰酸酯和含NH 2或OH基的化合物或NCO封端的预聚物 来自多异氰酸酯和分子量为400至约10,000的多羟基化合物,随后通过将所述混合物加热至低于所述二氨基二苯基脲的熔点的温度,随后使所述非均相体系反应形成聚氨酯脲弹性体。 本发明还涉及基于悬浮在上述NCO封端的预聚物中的上述二氨基二苯基脲的不均匀反应混合物。
    • 7. 发明授权
    • Process for the production of polyurethane urea elastomers
    • 生产聚氨酯脲弹性体的方法
    • US4882361A
    • 1989-11-21
    • US245846
    • 1988-09-16
    • Andreas RuckesGerhard GroglerRichard Kopp
    • Andreas RuckesGerhard GroglerRichard Kopp
    • C08G18/65C08G18/00C08G18/08C08G18/38C08G101/00C08J9/14
    • C08G18/3829C08G2120/00
    • The present invention is directed to a process for the production of compact or cellular, elastomeric moldings having a compact skin based on polyurethane urea elastomers prepared from(a) organic polyisocyanates,(b) relatively high molecular weight polyhydroxyl or polyamino compounds containing at least two reactive hydrogen atoms,(c) diaminodiphenyl ureas as chain-extending agents and optionally,(d) catalysts,(e) small quantities of ethylene glycol,(f) other chain-extending agents and/or cross-linking agents,(g) blowing agents and(h) auxiliaries and/or additives, which is characterized in that the chain-extending agents (c) are diaminodiphenyl ureas corresponding to formula I ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may be the same or different and represent hydrogen or a C.sub.1 -C.sub.6 alkyl radical and wherein the NH.sub.2 groups are in the m- and/or p-position to the urea group.The present invention is also directed to the RIM elastomers produced by this process.
    • 本发明涉及一种生产紧凑型或细胞型弹性体模制品的方法,其具有基于由(a)有机多异氰酸酯制备的聚氨酯脲弹性体的紧密表皮,(b)相对高分子量的多羟基或聚氨基化合物,其含有至少两个 反应性氢原子,(c)作为扩链剂的二氨基二苯基脲和任选的(d)催化剂,(e)少量乙二醇,(f)其它增链剂和/或交联剂,(g) 发泡剂和(h)助剂和/或添加剂,其特征在于扩链剂(c)是对应于式I的二氨基二苯基脲(I),其中R 1,R 2,R 3和R 4可以相同 或不同的并且表示氢或C 1 -C 6烷基,并且其中NH 2基团与脲基团的m-位和/或p-位。 本发明还涉及通过该方法制备的RIM弹性体。