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    • 3. 发明授权
    • Aqueous polyurethane compositions containing crosslinking agents and
their use for heat-active one-coat reverse coating
    • 含有交联剂的水性聚氨酯组合物及其用于热活性单层反涂层的用途
    • US4543144A
    • 1985-09-24
    • US599028
    • 1984-04-11
    • Wilhelm ThomaKlaus NachtkampWalter SchroerRolf Langel
    • Wilhelm ThomaKlaus NachtkampWalter SchroerRolf Langel
    • C08G18/08C08G18/10C09D175/04D06N3/14B44C1/00
    • D06N3/14C08G18/0866C08G18/10C09D175/04Y10S428/904
    • This invention relates to compositions of aqueous polyurethane dispersions containing polyurethanes having lateral OH-groups, optionally in admixture with PU-dispersions without any lateral OH-groups, which contain a combination of formaldehyde resins and blocked polyisocyanates as crosslinking agent and, optionally handle-improving agents, silicones and standard additives.The present invention also relates to the use of these compositions for the production of light coatings by the heat-activated, one-coat reverse coating process, in which the PU-composition is applied to a temporary support and dried, after which the (textile) substrate is laminated onto the dry polyurethane film at elevated temperature and pressure and the polyurethane laminate formed is subsequently crosslinked at a relatively high temperature.Mixed crosslinking with formaldehyde resins plus blocked polyisocyanates makes it possible to obtain coatings characterized by outstanding substrate adhesion and wet strength values.
    • 本发明涉及含有聚氨酯的水性聚氨酯分散体的组合物,其具有侧向OH-基团,任选地与没有任何横向OH-基团的PU-分散体混合,其含有甲醛树脂和封端多异氰酸酯作为交联剂的组合,以及任选处理改进 代理商,硅胶和标准添加剂。 本发明还涉及这些组合物用于通过热活化的单层反涂法生产轻涂层的用途,其中将PU组合物施用于临时载体并干燥,之后(纺织品 )基材在升高的温度和压力下层压在干燥的聚氨酯膜上,并且随后形成的聚氨酯层压体在较高的温度下交联。 与甲醛树脂加封端聚异氰酸酯的混合交联使得可以获得以卓越的基材粘合力和湿强度值为特征的涂层。
    • 5. 发明授权
    • Coating materials containing PUR dispersions and solvents and their use
for the preparation of water vapor permeable PUR coatings
    • 含有分散剂和溶剂的涂料及其用于制备水蒸汽渗透性涂料的用途
    • US5177141A
    • 1993-01-05
    • US422278
    • 1989-10-16
    • Wilhelm ThomaRolf LangelWalter Schroer
    • Wilhelm ThomaRolf LangelWalter Schroer
    • C14C11/00C08G18/00C08G18/08C08G18/10C08G18/28C08G18/80C09D171/08C09D175/04C09D175/08D06M15/564D06M101/00D06M101/16D06N3/14
    • D06N3/142C08G18/0819C08G18/10C08G18/283C08G18/8012C09D175/04
    • The present invention is directed to coating compositions (pastes) containinga) about 20 to 90% of an aqueous polyurethane dispersion which has a solids content of about 20 to 60% and wherein the polyurethane is rendered hydrophilic by carboxylate groups, sulphonate groups, pendant polyether chains having oxyethylene units, terminal polyether chains having oxyethylene units or mixtures thereof,b) about 0.1 to 5% by weight of a water-soluble, polymeric thickening agent for aqueous polyurethane dispersions which is not a polyurethane and which is free from carboxyl groups,c) about 3 to 80% by weight of water-immiscible organic solvent which is not a solvent for polyurethanes dispersed in water and which has a boiling point up to 250 C.,d) about 0.1 to 5% by weight of a cross-linking agent for the polyurethane dispersed in water which does not contain free isocyanate groups ande) about 0.1 to 5% by weight of a hydrophilic polyisocyanate which promotes the adhesion of the coating composition to substrates and is a cross-linking agent for the polyurethane dispersed in water,the sum of the percentages of a)+b)+c)+d)+e) being 100.The present invention is also directed to the use of these coating compositions for coating of substrates, preferably made of textile or leather, by the direct or transfer process, using the evaporation coagulation technique.
    • 本发明涉及包含a)约20至90%的具有约20至60%的固体含量的水性聚氨酯分散体的涂料组合物(糊剂),并且其中聚氨酯由羧酸酯基团,磺酸酯基团,侧链 具有氧乙烯单元的聚醚链,具有氧乙烯单元的末端聚醚链或其混合物,b)约0.1至5重量%的用于聚氨酯水分散体的水溶性聚合增稠剂,其不是聚氨酯并且不含羧基 ,c)约3-80重量%的水不混溶有机溶剂,其不是分散在水中的聚氨酯的溶剂,并且沸点高达250℃,d)约0.1至5重量%的十字 分散在不含游离异氰酸酯基团的水中的聚氨酯的连接剂和e)约0.1至5重量%的促进涂料组合物粘附的亲水性多异氰酸酯 并且是分散在水中的聚氨酯的交联剂,a)+ b)+ c)+ d)+ e)的百分比之和为100.本发明还涉及使用 这些涂料组合物用于通过直接或转移方法使用蒸发凝结技术涂覆基材,优选由纺织品或皮革制成。