Introduction to the hottest adhesive patents 8

Special topic of adhesive patent introduction 1

adhesives and adhesive sheets containing (meth) acrylate block copolymers and their manufacture JP 2001 234147 ()

this adhesive has good bonding and cohesion strength. It is obtained from block copolymers with ≥ 2 blocks and carboxylic acid cross-linking compounds (as cross-linking agents). The copolymer is obtained by free radical polymerization of (meth) acrylic acid precursor monomer through active Bridgestone R & D department ashokekarmoker, and then this block a is coupled with a block copolymer B, while copolymer B is obtained from (meth) acrylate in the required order, and then block a is transformed into a block of (meth) acrylic acid to realize cross-linking. Example: heat the mixture of 15g butyl acrylate, 0.539g 2,2 ` - bipyridine, 0.220g copper bromide and 0.323g 2-bromo -

- 2-hydroxyethyl methacrylate gb/t 12606 magnetic flux leakage testing method for steel pipes at 50 ° C for 12 hours to obtain an active polymer, which is first polymerized with butyl acrylate, and then polymerized with tert butyl acrylate, so a

-b-a triblock copolymer is given. A block copolymer is obtained by mixing 40 g of the copolymer solution in 40ml toluene with 4G of a cation exchange agent at 120 ° C for 2 h. It contains acrylic acid units converted into

. These units are compounded with polyepoxides to produce an adhesive

composition of high viscosity vinyl polymer adhesive for carpet jp2001 234144 ()

the adhesive has good water resistance and low temperature storage stability. It is a water diluted lotion, a polymer dispersion colloid containing vinyl ester monomer and a dispersant containing vinyl alcohol polymer (

has 1,2-diol bond ≥ 1.7mol%). Example: vinyl acetate is taken in the presence of polyvinyl alcohol (polymerization degree 1700, saponification degree 98.0mol%, 1,2-diol content 2.2mol%), tartaric acid

, water and dibutyl phthalate to obtain an adhesive, which has good water resistance, adhesive strength and low-temperature storage stability on plywood

pressure sensitive adhesive for information bearing and its sheet JP 2001 240833 ()

the main material of this composition is 100 parts (solid count) of natural rubber methyl methacrylate (I) grafting. If it is found that the pressure is insufficient, and parts (solid count) of acrylate styrene copolymer (II) lotion, take 100 parts of the main material and parts of ultra-fine filler to prepare the adhesive. Apply the adhesive on the surface of the base and dry it to form an adhesive layer. Under pressure, the layer is bonded to the adherend. When it is needed, this layer of products will peel the adhesive layer off the base material. This information bearing sheet (such as retainers, postcards, etc.) is composed of a sheet and a pressure-sensitive

adhesive layer made of the above adhesive. Example: a graft copolymer lotion is prepared by 100 parts of natural rubber and 10 parts of I. take a mixture of 100 parts of the lotion (solid count) and 10 parts of I and II copolymer lotion (polylon

F2000) and mix it with 50 parts of silica gel and 125 parts of starch. The product mentioned is coated on coated paper by photogravure printing method, dried at 120 ° C and wiped with antirust oil for 30 s. The peel strength of the information bearing sheet given is g at

90 ° C (25mm) -1, and has good anti adhesion

surface protective film JP 2001 234141 ()

this protective film is composed of a thermoplastic resin based film and a peelable adhesive; The peelable adhesive is made of 100 parts of rubber and parts of fatty acid modified alkyd resin

on a coextrusion film, apply a layer of glue, which is composed of 100 parts of hydrogenated block SBS, 2 parts of arakyd 251 and 1 part of Irganox 1010. The adhesive force of the obtained tape on the steel plate is initially 2.0 n (25mm) -1, 4.0 n. (25mm) -1 after 1 week at 70 ° C

this temporary protective film coated on the painted automobile surface is composed of ≥ 1 carrier layer and a two-component (polar and non-polar) adhesive layer. The polar component (50%-99%) is a kind of EVA poly

complex (vinyl acetate content%), while the non-polar component (1%-5%) is an amorphous or weakly crystalline C- α- Olefin polymer. The carrier is a thermoplastic polyolefin, and the film is prepared by coextrusion. This protective film has the required adhesive dosage and will not leave residue after being torn off