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US 2025/0051619 A1Published application
Semi-crystalline polyolefin construction adhesive
OwnerDaniel A. Everson, Ethan A. Gormonginventors
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Abstract
The invention includes a hot melt adhesive composition based on polyolefin polymers that can be used for applications (e.g., construction applications) in a disposable absorbent article. The olefin based hot melt adhesive composition has surprisingly good cohesive strength.
Claims20
A hot melt adhesive composition comprising:
- a. a first propylene-based copolymer that has a comonomer content of less than 5% by weight, a Heat of Fusion from 40 joules/gram to 65 joules/gram and a Melt Flow Rate of from 2 grams/10 minute to 40 grams/10 minute when tested at 230° C./2.16 kg according to ASTM D 1238,
- b. a second propylene-based copolymer that has a comonomer content of from 5% by weight to 30% by weight,
- c. a tackifying agent;
- and
- d. a plasticizer.
2 more elements
A hot melt adhesive composition comprising:
- a. from 4% by weight to 20% by weight of a first propylene-based copolymer that is single-site catalyzed, has a comonomer content of less than 5% by weight, a Heat of Fusion from 40 joules/gram to 65 joules/gram and a Melt Flow Rate of from 2 grams/10 minute to 40 grams/10 minute when tested at 230° C./2.16 kg according to ASTM D 1238,
- b. from 4% by weight to 25% by weight of a second propylene-based copolymer that has a comonomer content of from 5% by weight to 30% by weight,
- c. from 30% by weight to 60% by weight of a tackifying agent and
- d. from 22% by weight to 35% by weight of a plasticizer.
1 more element
Dependencies are inferred from the claim text.