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US 2006/0234580 A1Published application
Hot melt adhesives with exceptional wet strength in hot soapy aqueous media
OwnerAndres Susticinventor
Life of this patent
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Abstract
The invention relates to a hot melt adhesive composition including a blend of a first styrene-isoprene-styrene block copolymer having about 15% by weight styrene and about 42% by weight styrene-isoprene diblock and a second styrene-isoprene-styrene block copolymer having about 30% by weight styrene and substantially 0% by weight styrene-isoprene diblock, a solid plasticizer, a liquid plasticizer, and a tackifying resin. The adhesive composition is resistant to debonding induced by an aqueous soapy medium at about 140° F. and useful for preparing laminates
Claims17
A hot melt adhesive composition comprising:
- a) a blend of styrenic block copolymer comprising
- i) a first styrene-isoprene-styrene block copolymer that has about 15% by weight styrene and about 42% by weight styrene-isoprene diblock, and
- ii) a second styrene-isoprene-styrene block copolymer that has about 30% by weight styrene and substantially 0% by weight styrene-isoprene diblock,
- b) a solid plasticizer;
- c) a liquid plasticizer;
- and
- d) a tackifying resin,
- wherein the total styrene-isoprene diblock content of the composition is from about 10% by weight to about 20% by weight, based on the total weight of the first and second block copolymers, and wherein the composition is resistant to debonding induced by an aqueous soapy medium at 140° F.
5 more elements
Dependencies are inferred from the claim text.