摘要:
The invention relates to adhesive compositions based on polyurethane and on a polyamine suspension, characterized in that the free isocyanate functional group content is between 2 and 9% by weight and the polyamine is in the form of particles of mean diameter between 30 and 60 .mu.m. Its subject-matter is also a process for the preparation of the said compositions which consists in reacting a polyol and a polyisocyanate to form a polyurethane prepolymer, which prepolymer is mixed with the polyamine suspension.Such compositions can be employed for the adhesive bonding of materials especially for motor vehicles.
摘要:
The present invention relates to a composition based on 1,1,1,3,3-pentafluorobutane (HFC-365 mfc), that can be used in deposition, cleaning, degreasing and drying applications. Its object is also a fluid for cleaning internal heat-transfer systems. The object of the present invention is also a method for dissolving oil and for cleaning.
摘要:
The invention relates to a hydrofluorocarbon (HFC)-based composition, to the use thereof in refrigeration and/or air conditioning and to a heat-transfer system containing same.
摘要:
The invention relates to a hydrofluorocarbon (HFC)-based composition, to the use thereof in refrigeration and/or air conditioning and to a heat-transfer system containing same.
摘要:
The invention relates to polyurethane-based hot-melt adhesives resulting from the polyaddition of a polyisocyanate, of a polyol and of a copolymer of ethylene, of vinyl acetate and of an ethylenically unsaturated monomer containing at least one primary hydroxyl group per mole. It also relates to a process for the preparation of the said adhesives. It also relates to the use of the adhesives for the adhesive bonding of flexible materials such as films.
摘要:
The present invention relates to a composition based on 1,1,1,3,3-pentafluorobutane (HFC-365 mfc), that can be used in deposition, cleaning, degreasing and drying applications. Its object is also a fluid for cleaning internal heat-transfer systems. The object of the present invention is also a method for dissolving oil and for cleaning.
摘要:
Adhesive compositions based on polyurethane and a polyamine suspension have a free isocyanate functional group content of between 2 and 9% by weight, with the polyamine being in the form of particles having a mean diameter of between 30 and 60 &mgr;m. A process for preparing the adhesive compositions involves reacting a polyol and a polyisocyanate to form a polyurethane prepolymer, wherein the prepolymer is mixed with the polyamine suspension. The adhesive compositions can be used for the adhesive bonding of materials, especially for motor vehicles.