A waterproofing membrane system for waterproofing a concrete substrate is disclosed. The waterproofing membrane may comprise a first layer comprising a thermoplastic elastomeric waterproof material using advanced polymerization and squeeze technology. The second layer may comprise a carrier sheet that comprises a fabric. The third layer may comprise an adhesive to provide bonding of the first layer with a concrete substrate upon contact. In addition, the third layer may reduce migration of water and vapor traveling between the first layer and the concrete substrate. In some examples, the waterproofing membrane may also comprise a fourth layer to provide mechanical protection and ease of handling for the first layer, the second layer, and the third layer. In some examples, the first layer may comprise a thermoplastic polyolefin (TPO), the fabric may comprise polypropylene and/or polyethylene, the adhesive may comprise a C5 petroleum resin, and the fourth layer may be a protective coating comprising quartz sand (SiO2) having a reflectivity of 4.5%.

A waterproofing membrane system for waterproofing a concrete substrate is disclosed. The waterproofing membrane may comprise a first layer comprising a thermoplastic elastomeric waterproof material using advanced polymerization and squeeze technology. The second layer may comprise a carrier sheet that comprises a fabric. The third layer may comprise an adhesive to provide bonding of the first layer with a concrete substrate upon contact. In addition, the third layer may reduce migration of water and vapor traveling between the first layer and the concrete substrate. In some examples, the waterproofing membrane may also comprise a fourth layer to provide mechanical protection and ease of handling for the first layer, the second layer, and the third layer. In some examples, the first layer may comprise a thermoplastic polyolefin (TPO), the fabric may comprise polypropylene and/or polyethylene, the adhesive may comprise a C5 petroleum resin, and the fourth layer may be a protective coating comprising quartz sand (SiO2) having a reflectivity of 4.5%.

Water-based adhesive composition comprising: from 30% to 60% by weight (expressed as dry content) of a chloroprene modified acrylic emulsion (A); and from 0.05% to 0.45% by weight (expressed as dry content) of a water soluble polymer (B) selected among xanthan gum and konjac gum; said composition being obtainable by a process (P) comprising a first step (i) of dissolving into water polymer (B) in the form of a powdered solid.

Use of said composition, for the bonding of at least one cellulose based substrate.

Water-based adhesive composition comprising: from 30% to 60% by weight (expressed as dry content) of a chloroprene modified acrylic emulsion (A); and from 0.05% to 0.45% by weight (expressed as dry content) of a water soluble polymer (B) selected among xanthan gum and konjac gum; said composition being obtainable by a process (P) comprising a first step (i) of dissolving into water polymer (B) in the form of a powdered solid.

Use of said composition, for the bonding of at least one cellulose based substrate.

Provided is an adhesive using bark, which is advantageous not only in that the proportion of the bark is increased so as to effectively utilize the bark, and the proportion of the phenolic resin is reduced to lower the adhesive solids content, but also in that the composition of the adhesive is simple. An adhesive using bark, which comprises a resol type phenolic resin and a radiata pine bark powder, wherein the adhesive contains 30 to 40 parts by mass of the radiata pine bark powder, relative to 100 parts by mass of the total of the resol type phenolic resin solids and the radiata pine bark powder. Alternatively, an adhesive using bark, which comprises a resol type phenolic resin and a radiata pine bark powder, wherein the adhesive contains 20 to 50 parts by mass of the radiata pine bark powder and wheat flour, relative to 100 parts by mass of the total of the resol type phenolic resin solids, the radiata pine bark powder, and the wheat flour, and wherein the mass ratio of the radiata pine bark powder and the wheat flour is 9:1 to 5:5.

A polyester-based pressure-sensitive adhesive layer, pressure-sensitive adhesive tape, and double-coated pressure-sensitive adhesive tape each having high durability (high heating humidification storage stability) and good adhesive properties are provided using a polyester-based pressure-sensitive adhesive composition. The polyester-based pressure-sensitive adhesive composition of the invention includes a polyester, a hydrolysis-resistant agent, a tackifier with an acid value of 8 or less and a softening point of 80 to 170 C., and a crosslinking agent, and contains 20 to 100 parts by weight of the tackifier based on 100 parts by weight of the polyester.

A polyester-based pressure-sensitive adhesive layer, pressure-sensitive adhesive tape, and double-coated pressure-sensitive adhesive tape each having high durability (high heating humidification storage stability) and good adhesive properties are provided using a polyester-based pressure-sensitive adhesive composition. The polyester-based pressure-sensitive adhesive composition of the invention includes a polyester, a hydrolysis-resistant agent, a tackifier with an acid value of 8 or less and a softening point of 80 to 170 C., and a crosslinking agent, and contains 20 to 100 parts by weight of the tackifier based on 100 parts by weight of the polyester.

A polyester-based pressure-sensitive adhesive layer, pressure-sensitive adhesive tape, and double-coated pressure-sensitive adhesive tape each having high durability (high heating humidification storage stability) and good adhesive properties are provided using a polyester-based pressure-sensitive adhesive composition. The polyester-based pressure-sensitive adhesive composition of the invention includes a polyester, a hydrolysis-resistant agent, a tackifier with an acid value of 8 or less and a softening point of 80 to 170 C., and a crosslinking agent, and contains 20 to 100 parts by weight of the tackifier based on 100 parts by weight of the polyester.

A waterproofing membrane system for waterproofing a concrete substrate includes a first layer comprising a thermoplastic elastomeric waterproof material using advanced polymerization and squeeze technology. The second layer comprises a carrier sheet that comprises a fabric. The third layer comprises an adhesive to provide bonding of the first layer with a concrete substrate upon contact. In addition, the third layer may reduce migration of water and vapor traveling between the first layer and the concrete substrate. In some examples, the waterproofing membrane system also includes a fourth layer to provide mechanical protection and ease of handling for the first layer, the second layer, and the third layer. In some examples, the first layer comprises a thermoplastic polyolefin (TPO), the fabric comprises polypropylene or polyethylene, the adhesive comprises a C5 petroleum resin, and the fourth layer is a protective coating comprising quartz sand (SiO2) having a reflectivity of 4.5%.

A waterproofing membrane system for waterproofing a concrete substrate includes a first layer comprising a thermoplastic elastomeric waterproof material using advanced polymerization and squeeze technology. The second layer comprises a carrier sheet that comprises a fabric. The third layer comprises an adhesive to provide bonding of the first layer with a concrete substrate upon contact. In addition, the third layer may reduce migration of water and vapor traveling between the first layer and the concrete substrate. In some examples, the waterproofing membrane system also includes a fourth layer to provide mechanical protection and ease of handling for the first layer, the second layer, and the third layer. In some examples, the first layer comprises a thermoplastic polyolefin (TPO), the fabric comprises polypropylene or polyethylene, the adhesive comprises a C5 petroleum resin, and the fourth layer is a protective coating comprising quartz sand (SiO2) having a reflectivity of 4.5%.