49 results about "Isocyanate" patented technology

The invention provides a novel acrylate modified waterborne polyurethane adhesive. The adhesive is characterized by being prepared by the following steps: taking polyether glycol and polyisocyanate toreact, so as to obtain a waterborne polyurethane pre-polymer; enabling the waterborne polyurethane pre-polymer to react with an acrylic monomer or a methacrylic acid monomer under the action of an emulsifier and an initiator to obtain waterborne polyurethane acrylate, so as to obtain emulsion, wherein the emulsion is the acrylate modified waterborne polyurethane adhesive. The invention further discloses a preparation method and application of the adhesive. Compared with the prior art, the novel acrylate modified waterborne polyurethane adhesive has the advantages of better environment-friendly performance and improved anti-oxidization capability and anti-ageing capability; the adhesive has good bonding performance with adhesive films and paper products.

The invention discloses a vinyl-containing fluorinated isocyanate monomer. The preparation method of the fluorinated isocyanate monomer comprises the following steps: reacting diisocyanate with fluorinated alcohol to prepare a fluorinated isocyanate intermediate and then reacting the fluorinated isocyanate intermediate with (meth) hydroxyalkyl acrylate to obtain the fluorinated isocyanate monomer. The organic fluorine-modified polyurethane-acrylate copolymer emulsion with the characteristics of organic fluorine, polyurethane and acrylate resin is synthesized by carrying out emulsion polymerization on the fluorinated isocyanate monomer and the conventional (meth) acrylate. Compared with the prior art, the method for preparing fluorinated isocyanate-acrylate copolymer emulsion has the advantages that since the fluorinated isocyanate monomer is prepared in advance, when an emulsion copolymerization reaction is carried out on the fluorinated isocyanate monomer and acrylates monomer in an aqueous system, the compatibility between the monomers is better, the reaction system is more stable, the reaction is controlled easier and the synthesized copolymer emulsion has better stability.

The invention discloses a modified polyurethane acrylic resin, which is prepared by polymerization among hydroxyl acrylate, diisocyanate, alkylated 4,4'-dicyclohexanol, and polyester / polyether glycol. The invention provides a method of preparing the modified polyurethane acrylic resin at the same time. The provided modified polyurethane acrylic resin does not contain active functional group such as phenyl ring, amino group, or the like, so the modified polyurethane acrylic resin will not become yellow even if the modified polyurethane acrylic resin is irradiated by light, and the weatherability is good. The resin can be applied to an adhesive, and has a good waterproof performance, good anti-falling performance, good drug resistant property, and excellent thermal stability.

Fiber coatings with low Young's modulus, high tear strength, and / or high critical stress are achieved with coating compositions that include an oligomeric material formed from an isocyanate, a hydroxyacrylate compound and a polyol. The oligomeric material includes a polyether urethane acrylate and a di-adduct compound. The reaction mixture used to form the oligomeric material includes a molar ratio of isocyanate:hydroxy acrylate:polyol of n:m:p, where when p is 2, n is in the range from 3.0 to 5.0 and m is in the range from 1.50n-3 to 2.50n-5. Control of the n:m:p ratio leads to compositionsthat, when cured, provide coatings and cured products having high critical stress, high tear strength, and a high ratio of tear strength to Young's modulus.

The invention discloses a polyurethane structural adhesive used for bonding an automobile spoiler and a preparation method and application of the polyurethane structural adhesive used for bonding theautomobile spoiler. The polyurethane structural adhesive comprises raw materials of a first component and a second component in a feed mass ratio of 1: (0.75 to 1.5), wherein the second component comprises polyisocyanate; the first component comprises polyether polyol having the number average molecular weight from 2000 to 4000 and being more than difunctionality, polyether polyol having the number average molecular weight from 300 to 500 and being more than tri-functionality, polyether polyol having the number average molecular weight from 90 to 400 and castor oil in a feed mass ratio of (7 to 33): (0.6 to 5): 1 to (2 to 13); the preparation of the polyurethane structural adhesive used for bonding the automobile spoiler comprises the following steps: respectively mixing various componentsin the first component and the second component through a physical mixing method and then blending to obtain the polyurethane structural adhesive; the application of the polyurethane structural adhesive used for bonding the automobile spoiler is that the first component and the second component of the polyurethane structural adhesive are separately sprayed on the bonding part of the spoiler on anautomobile, and the automobile spoiler is bonded to realize bonding; and by adopting the polyurethane structural adhesive used for bonding the automobile spoiler, all performances in various aspectsat room temperature and high and low temperature are excellent.