Hot-melt adhesive

FIELD: chemistry.

SUBSTANCE: invention relates to hot-melt adhesive, particularly to an adhesive, which is used in production of disposable products. Adhesive contains: (A) propylene homopolymer with melting temperature equal to 100 °C or lower, which can be obtained through polymerisation of propylene using metallocene catalyst; and (B) an ethylene-based copolymer.

EFFECT: hot-melt adhesive is suitable for high-speed application and spiral application at low temperature, and also has excellent adhesion to a polyethylene film and nonwoven web.

4 cl, 3 tbl

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: hot-melt adhesive contains at least one copolymer of ethylene and/or propylene and α-olefin, having 4-20 carbon atoms, which is obtained via metallocene-catalysed polymerisation, at least one adhesive resin, as well as at least one ternary copolymer based on α-olefins having 2-5 carbon atoms, and (meth)acrylic esters, and additives. The ternary copolymer based on α-olefins having 2-5 carbon atoms and (meth)crylic esters contains carboxyl and anhydride groups, built through polymerisation or radical grafting of 0.1-7.5 wt % α,β-unsaturated monomers containing acid groups, or anhydride groups.

EFFECT: adhesive has good adhesion, particularly with plastic, metallic and lacquer surfaces, which remains elastic at low temperature, and exhibits high stability in heat.

8 cl, 5 ex

FIELD: chemistry.

SUBSTANCE: hot-melt adhesive contains at least one copolymer of ethylene and/or propylene and α-olefin, having 4-20 carbon atoms, which is obtained via metallocene-catalysed polymerisation, at least one adhesive resin, as well as at least one ternary copolymer based on α-olefins having 2-5 carbon atoms, and (meth)acrylic esters, and additives. The ternary copolymer based on α-olefins having 2-5 carbon atoms and (meth)crylic esters contains carboxyl and anhydride groups, built through polymerisation or radical grafting of 0.1-7.5 wt % α,β-unsaturated monomers containing acid groups, or anhydride groups.

EFFECT: adhesive has good adhesion, particularly with plastic, metallic and lacquer surfaces, which remains elastic at low temperature, and exhibits high stability in heat.

8 cl, 5 ex

Hot-melt adhesive // 2607586

FIELD: chemistry.

SUBSTANCE: invention relates to hot-melt adhesive, particularly to an adhesive, which is used in production of disposable products. Adhesive contains: (A) propylene homopolymer with melting temperature equal to 100 °C or lower, which can be obtained through polymerisation of propylene using metallocene catalyst; and (B) an ethylene-based copolymer.

EFFECT: hot-melt adhesive is suitable for high-speed application and spiral application at low temperature, and also has excellent adhesion to a polyethylene film and nonwoven web.

4 cl, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to hot-melt adhesive, in particular to an adhesive which is suitable for use in disposable products. Adhesive contains: (A) propylene homopolymer with melting temperature of 100 °C or lower, obtained by polymerisation of propylene in presence of a metallocene catalyst; and (B) wax, modified with carboxylic acid and/or anhydride of carboxylic acid.

EFFECT: hot-melt adhesive is suitable for application of coating with high rate, and is characterised by improved adhesion in moist condition and ability to form a coating at low temperature.

4 cl, 2 tbl

Hot-melt adhesive // 2613965

FIELD: chemistry.

SUBSTANCE: invention relates to hot-melt adhesive, which is used for production of disposable products such as a diapers and hygiene products, which are a typical product made from nonwoven fabric. Adhesive contains (A) thermoplastic block-copolymer, which is a copolymer of vinyl-containing aromatic hydrocarbon and a conjugated diene compound, (B) propylene homopolymer, obtained by polymerisation of propylene using metallocene catalyst, (C) a tackifying polymer and (D) a plasticiser. Propylene homopolymer (B) has a melting point of 100 °C or lower and polydispersity (Mw/Mn) from 1 to 3.

EFFECT: produced hot-melt adhesive is excellent for high-speed coating and application of coating using a vortex method at low temperature, and is excellent in its adhesion to polyethylene and nonwoven fabric; id est disposable products obtained using hot-melt adhesive, can be effectively made using a line for high-speed coating method, and application of coating can be performed at low temperature of about 140 °C, which is reason of higher safety; wherein disposable products are excellent in adhesion to nonwoven fabric and to a polyolefin film and less likely to peel off.

5 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: olefinic thermoplastic elastomer composition contains a rubber component, polyolefin, and an adhesion promoter system, which includes one or more first adhesion promoters from the group of wetting adhesion promoters and one or more second adhesion promoters from the group of chemically active adhesive binders, and one or more additives.

EFFECT: composition has good adhesion to polar substrates without the need to pre-treat the substrate surface and without intermediate primer application.

5 cl, 8 ex

Hot-melt adhesive // 2643549

FIELD: chemistry.

SUBSTANCE: hot-melt adhesive, comprising: (A) a thermoplastic block-copolymer that is a copolymer of an aromatic hydrocarbon on a vinyl base with a conjugated diene compound; (B) a propylene homopolymer having a melting point of 100°C or less, which can be obtained by polymerizing propylene using a metallocene catalyst; and (C) an ethylene/α-olefin copolymer.

EFFECT: quality improvement in high-speed coating and spiral coating at a low temperature, high adhesion to a polyolefin film and a non-woven material.

5 cl, 2 tbl

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