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US 12,760,208 B2Granted
Hot melt adhesive composition
AssigneeBostik SA
InventorsOlivier Laferte, Laurianne Libralesso, Stéphanie Komar, Clement Bellini, Jian Ping Shi, Danfeng Li
Life of this patent
Estimating the term…
Abstract
The present invention relates to a pressure sensitive hot melt adhesive, particularly to a pressure sensitive hot melt positioning adhesive for use on feminine sanitary pads or adult incontinent products having improved peel values on fabrics made from Lyocell fibers, particularly eucalyptus-based Lyocell fibers.
Claims12
A hot melt adhesive composition comprising, by total weight of the composition:
- from 5 to 35% by weight of at least one styrene block polymeric component having an average hardness Shore A of 60 or less, wherein the at least one styrene block polymeric component comprises at least one linear styrene block copolymer (a) and at least one linear styrene block copolymer (b), wherein the at least one linear styrene block copolymer (a) is selected from the group consisting of SB, SI, SEB, SEP, SBBS, SBS, SEBS, SEPS, SEEPS, SIBS, SIS, random-block SBR, random-block SIR, and mixtures thereof and the at least one linear styrene block copolymer (b) is selected from the group consisting of SB, SI, SEB, SEP, SBBS, SBS, SEBS, SEPS, SEEPS, SIBS, SIS, random-block SBR, random-block SIR, and mixtures thereof, and wherein the at least one styrene block polymeric component is selected from the group consisting of:
- from 60 to 70% of random-block SBR copolymer (a) and from 30 to 40% of SIS copolymer (b);
- from 75 to 85% of random-block SBR copolymer (a) and from 15 to 25% of SIS copolymer (b);
- from 45 to 55% of random-block SBR copolymer (a) and 45 to 55% of SIS copolymer (b);
- from 20 to 30% of random-block SBR copolymer (a) and from 70 to 80% of SIS copolymer (b);
- from 60 to 70% of random-block SBR copolymer (a) and from 30 to 40% of SEBS copolymer (b);
- from 60 to 70% of SIS copolymer (a) and from 30 to 40% of SIS copolymer (b);
- from 60 to 70% of SIS copolymer (a) and from 30 to 40% of SEBS copolymer (b);
- 100% of SIS copolymer (a);
- 100% of random-block SBR polymer (a);
- 100% of a composition of copolymers (a) consisting of 60 to 70% of SIS copolymer (a) and from 30 to 40% of random-block SBR copolymer (a);
- 100% of a composition of copolymers (a) consisting of 45 to 55% of SIS copolymer (a) and from 45 to 55% of random-block SBR copolymer (a);
- and
- from 27 to 37% of random-block SBR copolymer (a), from 27 to 37% of SIS copolymer (b) and from 30 to 40% of SEBS copolymer (b);
- from 40 to 65% by weight of at least one tackifying resin;
- from 15 to 40% by weight of at least one plasticizer;
- from 0 to 5% by weight of at least one stabilizer;
- wherein
- the composition does not comprise a propylene-based polymer.
16 more elements
Dependencies are inferred from the claim text.