公开(公告)号：US20200010743A1

公开(公告)日：2020-01-09

申请号：US16486880

申请日：2018-02-20

Applicant: BOSTIK, INC.

Inventor： Steven D. GRAY ,  Darius K. DEAK ,  Brian R. MINIX ,  Edward P. TOMLINSON

IPC: C09J153/02 ,  C09J11/06

Abstract: A hot melt adhesive comprises at least one polymer selected from the group consisting of polystyrene, polybutene, polyisobutene, linear low density polyethylene, polypropylene random copolymer, polypropylene, olefin block copolymer, polyolefins, styrene block copolymers, and ethyl vinyl acetate polymers; a tackifying resin; and at least one precisely end-capped polystyrene (PECPS). The use of the styrene-based oligomers and polymers with the precisely controlled end-groups in hot melt adhesive formulations to improve compatibility with polymers and block copolymers frequently used in such adhesives.

公开(公告)号：US20180148616A1

公开(公告)日：2018-05-31

申请号：US15822790

申请日：2017-11-27

Applicant: Bostik, Inc.

Inventor： Genta OKAZAKI ,  Kimberly E. SECRIST ,  Steven D. GRAY

IPC: C09J123/12 ,  C09J123/14 ,  C09J123/08 ,  C09J5/06 ,  C09J11/04 ,  C09J11/06 ,  C09J11/08

CPC classification number: C09J123/12 ,  A61F13/5611 ,  C08L2205/02 ,  C08L2205/025 ,  C09J5/06 ,  C09J11/04 ,  C09J11/06 ,  C09J11/08 ,  C09J123/08 ,  C09J123/14 ,  C09J2423/00 ,  C09J2425/00 ,  C09J2431/00 ,  C09J2491/00 ,  C08L23/14 ,  C08L23/12

Abstract: A hot melt adhesive composition comprises a polymer blend based on a first polymer component having a low melting point and is selected from a polypropylene homopolymer and a copolymer of propylene and ethylene and mixtures thereof; a second polymer component comprising an amorphous polyolefin; and about 30% to about 75% by weight of a tackifying resin. The composition optionally further contains a plasticizer, an antioxidant, a wax, a filler, a colorant, a UV absorber, another polymer, or combinations thereof. The hot melt composition has a viscosity equal to or less than about 80,000 cP at 180° C. and is useful for a variety of industrial applications including bonding together the substrates used in disposable hygiene products, such as nonwoven layers, elastic attachments, and thermoplastic films (polyolefin, polylactic acid, etc.). The hot melt adhesive composition may be dually functional, serving as an elastic component adhesive and a construction adhesive.

公开(公告)号：US20220251429A1

公开(公告)日：2022-08-11

申请号：US17626238

申请日：2020-07-10

Applicant: Bostik, Inc. ,  Bostik, SA

Inventor： Kimberly E. SECRIST ,  Steven D. GRAY ,  Naji HUSSEIN

IPC: C09J123/12 ,  C09J5/06 ,  A61F13/539

Abstract: A hot melt adhesive composition comprises a polypropylene homopolymer having a DSC melting point of less than 100° C.; a butene-based copolymer; and a plasticizer. The butene-based copolymer may comprise a butene-rich amorphous poly-alpha olefin, such as a butene-propylene copolymer, or a semi-crystalline copolymer, such as a butene-ethylene copolymer. The hot melt adhesive is especially useful for bonding substrates which swell or elongate significantly in use. Such uses include adhering superabsorbent polymers to a substrate or adhering together two substrates at least one of which having superabsorbent polymers, such as the top and bottom layer of an absorbent core of a disposable hygiene article, such as a diaper, feminine sanitary napkin, and adult incontinence pad. The hot melt adhesive composition, which does not contain a tackifier, demonstrates suitable elongation at break and stress at yield, with a sufficiently low viscosity, to stabilize an absorbent core having superabsorbent polymers.