Adhesive patent introduction topic 1-7

Adhesives and Adhesive Sheets Containing (Meth)Acrylate Type Block Copolymers and Their Manufacturing. JP 2001 234147 (2001-08-28)

The adhesive has good adhesion and cohesive strength and is obtained with block copolymers of ≥2 blocks and carboxylic acid crosslinking compounds (as crosslinkers). The copolymer is obtained by living radical polymerization of a (meth)acrylic precursor monomer, and then this block A is further coupled by a block copolymer B, and the copolymer B is made of (meth)acrylate. According to the required sequence, the block A is converted into a block of (meth)acrylic acid so that cross-linking is achieved. Example: 15g of butyl acrylate, 0.539g of 2,2'-bispyridinium, and 0.220g of copper bromide with 0.323g of 2-bromo-
A mixture of 2-hydroxyethyl methyl propanoate is heated at 50°C for 12 h to give a living polymer which is first polymerized with butyl acrylate and then polymerized with butyl acrylate to give Out of
-BA triblock copolymers. A solution of 40 g of this copolymer in 40 mL of toluene was mixed with 4 g of a cation-exchanged exchanger at 120° C. for 2 h to obtain a block copolymer containing converted acrylic acid units. Polyepoxide compound made an adhesive.

High-viscosity vinyl polymer adhesive for carpet composition JP2001 234144 (2000-08-28)

The adhesive has good water resistance and low temperature storage stability. It is a water-dilutable emulsion, a polymer dispersion colloid containing vinyl ester monomers and a polymer containing vinyl alcohol (
The dispersant has a 1,2-glycol bond ≥1.7 mol %). Example: Vinyl acetate is mixed in the presence of polyvinyl alcohol (degree of polymerization 1700, degree of saponification 98.0 mol%, content of 1,2-diols 2.2 mol%), tartaric acid, water and dibutyl phthalate. This kind of adhesive has good water resistance, adhesive strength and low temperature storage stability on plywood.

Pressure sensitive adhesive for information bearing and its sheet material JP 2001 240833 (2001-09-04)

The composition consists of 100 parts (solids) of a natural rubber methyl methacrylate (I) graft copolymer and 5-50 parts (solids) of an acrylate-styrene copolymer (II) emulsion. , Take 100 parts of the main material and 100-250 parts of ultra-fine particles of filler made adhesive. The adhesive is applied to the base surface and dried to form an adhesive layer. The layer is adhered to the adherend under pressure. This laminate will peel the adhesive layer from the substrate when needed. This information-bearing sheet (such as stencil, postcard, etc.) consists of a sheet and a pressure-sensitive adhesive layer made of the above-mentioned adhesive. Example: 100 parts of natural rubber and 10 parts of I to prepare a graft copolymer emulsion, take 100 parts of the emulsion (solid basis) and 10 parts (solid basis) I, II copolymer emulsion (Polytlon
The mixture of F2000) was mixed with 50 parts of silica gel and 125 parts of starch. The product mentioned was coated on coated paper by gravure printing and dried at 120° C. for 30 s.
The 90°C peel strength is 100-150 g.(25mm)-1, and it has good blocking resistance.

Surface Protective Film JP 2001 234141 (2001-08-28)

This protective film is composed of a thermoplastic resin-based film and a peelable adhesive; the peelable adhesive is prepared using 100 parts of rubber and 1-15 parts of fatty acid-modified alkyd resin.
A coextruded film was coated with a layer of glue consisting of 100 parts hydrogenated block SBS, 2 parts Arakyd 251 and 1 part Irganox 1010. The resulting adhesive tape had an initial adhesion of 2.0 N. (25 mm)-1 on the steel plate and 4.0 N. (25 mm)-1 after one week at 70°C.

Production of self-adhesive protective film and its application on the surface of automobiles. EP 1126000 (2001-08-22)

This temporary protective film coated on the surface of a painted car consists of a carrier layer of ≥1 and a two-component (polar and non-polar) adhesive layer. The polar component (50%-99%) is an EVA polymer (vinyl acetate content 40-80%), while the non-polar component (1%-5%) is an amorphous or weakly crystalline C2-12-alpha-olefin polymer. The carrier is a thermoplastic polyolefin that is produced by co-extrusion. This protective film has the required amount of adhesive, leaving no residue after tearing.