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
    • 13. 发明专利
    • DE19847791A1
    • 2000-04-20
    • DE19847791
    • 1998-10-16
    • BAYER AG
    • HASSEL TILLMANNMEIXNER JUERGENMUENZMAY THOMASREINERS JUERGENSCHOOB JOERG
    • C08G18/08C08G18/12C08G18/32C08G18/40C08G18/42C08G18/48C08G18/65C08G18/66C08G18/70C08J3/03C08L75/04C09D175/04B05D7/24C14C11/00C08G18/34C08G18/78D06N3/14
    • Aqueous polyurethane (PUR) dispersions containing PUR with an OH functionality of 2-6 and a mol. wt. (Mn) of less than 15000, derived from a mixture of polyol, low-mol. wt. diol and ionic group-containing diol in a special mol ratio, plus aliphatic polyisocyanate in a special OH/NCO mol ratio, NCO-reactive amine, water and optionally mono-alcohol. Aqueous polyurethane dispersions containing PUR derived from (a) polyol(s) with a number-average mol. wt. (Mn) of 500-6000, preferably 1000-4000, most preferably 1500-3000, (b) polyol(s), preferably diol(s) with a mol. wt. of less than 500, preferably 61-499, (c) aliphatic polyisocyanate(s), preferably di-isocyanate(s), (d) diol(s) with a mol. wt. of less than 450 containing one or more ionic and/or potentially ionic groups, preferably carboxylic acid or carboxylate group(s), (e) NCO-reactive amine(s) containing 1-6 hydroxyl groups, (f) water and optionally (g) a mono-alcohol. In these compositions the mol ratio of (a):(b + d) = (1:1.5)-(1:4), preferably (1:2)-(1:3) and the mol ratio of (a + b + d):(c) = (1:1.1)-(1:2.5), preferably (1:1.2)-(1:1.7), while the PUR shows an OH functionality of 2-6, preferably 2-4, and an Mn of less than 15000, preferably 2500-10000, most preferably 3000-7000. Independent claims are also included for:- (1) a process for the production of PUR dispersions by reacting components (a), (b), (c), (d) and optionally (g) to an NCO prepolymer and then reacting this with component (e) and water (f) to give a PUR with an OH functionality of 2-6; (2) aqueous PUR systems containing (A) aqueous PUR dispersion(s) as described and (B) water-dispersible aliphatic or cycloaliphatic polyisocyanate(s) with an NCO functionality of at least 2, preferably 2-6, most preferably 2.3-4, in which the ratio of (OH groups in A):(NCO in B) = (1:1)-(1:4), preferably (1:1.2)-(1:3); (3) substrates coated with these PUR systems, especially wood, metal, textiles, paper, plastic and leather; and (4) a process for coating substrates with these aqueous PUR systems.
    • 19. 发明专利
    • RADIATION CURABLE COMPOSITIONS AND THEIR USE
    • CA2103540A1
    • 1994-02-12
    • CA2103540
    • 1993-08-06
    • BAYER AG
    • MEIXNER JUERGENFISCHER WOLFGANGGUPTA PRAMOD
    • C08F299/04C08F283/01C08G63/52C08G63/676C08L67/06C09D4/00C09D167/06C09K3/10C08G63/54C08L29/02C08L29/10C09D5/34
    • The present invention relates to compositions which may be cured by radical polymerization at room temperature and contain A) 20 to 100 parts by weight of .alpha.,.beta.-ethylenically unsaturated polyesters which are the reaction products of a) a dicarboxylic acid component containing i) 40 to 100 carboxyl equivalent % of .alpha.,.beta. ethylenically unsaturated dicarboxylic acids and/or their anhydrides and ii) 0 to 60 carboxyl equivalent % of dicarboxylic acids and/or their anhydrides other than those set forth in i) with b) an alcohol component containing i) 25 to 100 hydroxyl equivalent % of alkoxylated 2-butene-1,4-diols having an average molecular weight 130 to 400 and ii) 0 to 75 hydroxyl equivalent % of mono- or poly- hydric alcohols having a molecular weight of 32 to 400 other than those set forth in i) wherein the amounts of a) and b) are chosen such that the equivalent ratio of carboxyl groups to hydroxyl groups is no more than 1:1, B) 0 to 80 parts by weight of compounds containing (meth)acryloyl groups and/or vinyl ether groups, wherein the sum of the parts by weight of A) and B) is 100, based on the weight of components A) and B), provided that when components A) and B) are used in a weight ratio exceeding 9:1, component a) contains at least 90 carboxyl equivalent % of component ai) and component b) contains at least 40 hydroxyl equivalent % component bi). The present invention also relates to the use of these compositions as binders for coating, patching or sealing compositions and for the production of molded bodies.