Oil-resistant elastic attachment adhesive and laminates containing it
First Claim
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1. An adhesive composition, comprising:
- a single-site catalyzed polyolefin-based plastomer having a number average molecular weight of about 1,000 to about 50,000 grams/mol and a crystallinity of 10 to less than 50% by weight;
a crystalline propylene-based polymer having a number average molecular weight of greater than 10,000 to 200,000 grams/mol and a crystallinity of 50-100% by weight;
a tackifier; and
an elastomer.
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Abstract
A polyolefin-based elastic hot melt adhesive composition having oil resistance, creep resistance and excellent bond strength is provided. The adhesive composition is useful in elastic laminates used in personal care absorbent articles and other garments.
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Citations
23 Claims
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1. An adhesive composition, comprising:
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a single-site catalyzed polyolefin-based plastomer having a number average molecular weight of about 1,000 to about 50,000 grams/mol and a crystallinity of 10 to less than 50% by weight;
a crystalline propylene-based polymer having a number average molecular weight of greater than 10,000 to 200,000 grams/mol and a crystallinity of 50-100% by weight;
a tackifier; and
an elastomer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A laminate, comprising a first facing layer, a second facing layer, and an adhesive composition bonding the first facing layer to the second facing layer, wherein the adhesive composition comprises:
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a single-site catalyzed polyolefin-based plastomer having a number average molecular weight of about 1,000 to about 50,000 grams/mol and a crystallinity of 10 to less than 50% by weight;
a crystalline propylene-based polymer having a number average molecular weight of greater than 10,000 to 200,000 grams/mol and a crystallinity of 50-100% by weight;
a tackifier; and
an elastomer. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A personal care absorbent article, comprising a chassis defining a waist opening and two leg openings, side panels extending laterally from the chassis, a waist region adjacent to the waist opening and leg regions adjacent to the leg openings, the chassis including a substantially liquid impermeable outer cover, a liquid permeable bodyside liner, and an absorbent core between the outer cover and bodyside liner, wherein at least one of the outer cover, side panels, waist region and leg regions comprises a laminate which includes a first facing layer, a second facing layer, and an adhesive composition bonding the first facing layer to the second facing layer, the adhesive composition comprising:
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a single-site catalyzed polyolefin-based plastomer having a number average molecular weight of about 1,000 to about 50,000 grams/mol and a crystallinity of 10 to less than 50% by weight;
a crystalline propylene-based polymer having a number average molecular weight of greater than 10,000 to about 200,000 grams/mol and a crystallinity of 50-100% by weight;
a tackifier; and
an elastomer. - View Dependent Claims (20, 21, 22, 23)
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Specification