摘要:
A solvent or water-based primer system to promote the adhesion of polyurethane adhesives and sealants such as polyurethane hot melt adhesives to polymer composite substrates such as FRP and SMC. The primer contains at least one functional polymer, and preferably at least one hydroxyl functional polymer. A method of using the primer system and an article containing the primer system are also disclosed
摘要:
High green strength reactive hot melt adhesives are prepared using relatively low levels of reactive acrylic, and may be prepared with one or more difunctionals having cyclic or polycyclic structures.
摘要:
High green strength reactive hot melt adhesives are prepared using relatively low levels of reactive acrylic, and may be prepared with liquid crystalline or crystalline diols.
摘要:
The present invention is directed to nitrile-oxide precursor compounds, and their preparation and use as an irreversible cross-linking agent in polymers having appropriate functionality, i.e., alkenes, alkynes nitrites, and isocyanates. The present invention is also directed to the use of nitrile oxide compound in filled or unfilled applications such as pressure sensitive adhesives, reactive hot melts, polyurethane dispersions, thermosetting adhesives, thermoplastic adhesives or coatings.
摘要:
High green strength reactive hot melt adhesives are prepared using relatively low levels of reactive acrylic, and may be prepared with one or more difunctionals having cyclic or polycyclic structures.
摘要:
High green strength reactive hot melt adhesives are prepared using relatively low levels of reactive acrylic, and may be prepared with liquid crystalline or crystalline diols.
摘要:
A solvent-free one-part hot melt polyurethane adhesive or sealant composition which is solid at room temperature comprising 10 to 70% by weight of a urethane prepolymer having an isocyanate content of 0.25 to 15% and an isocyanate index greater than 1 and 30 to 90% by weight of an ethylenically unsaturated polymer having a number average molecular weight of 4,000 to 15,000 as determined by Gel Permeation Chromatography using a PL Gel,Mixed 10 micron column, a Shimadzu Model RID 6A Detector with a tetrahydrofuran carrier solvent at a flow rate of 1 milliliter per minute, the polymer containing sufficient hydroxyl functionality to provide an OH number of 5 to 15.
摘要翻译:无溶剂的单组分热固性聚氨酯粘合剂或密封剂组合物,其在室温下为固体,包含10至70重量%的异氰酸酯含量为0.25至15重量%,异氰酸酯指数大于1至30重量% 90重量%的数均分子量为4,000至15,000的烯键式不饱和聚合物,通过使用PL凝胶,混合10微米柱,Shimadzu Model RID 6A检测器的凝胶渗透色谱法,使用四氢呋喃载体溶剂,流速 1分钟,该聚合物含有足够的羟基官能度以提供5至15的OH值。