EP0115307A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for preparing non-blocking hot melt adhesives
Assignee: Ingredion Inc
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Filing: 1984-01-19
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Granted: —
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Expires: 2004-01-19
Abstract
Abstract Process for producing non-blocking hot melt adhesive by contacting the adhesive at a temperature above its melting point with a dispersion of a parting agent selected from polyolefins, copolymers thereof and waxes, to provide a film-like coating fused on the surfaces of said adhesive. The parting agents have a molecular weight of from 800 to 5,000 and a melting point in the range of 65 to 140 DEG C.
Inventors
- 👤 Martin D. Thaler
- 👤 Zennon B. Kopicki
- 👤 Paul P. Puletti
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 17:40
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/124; C09; C09J; C09J201/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
120 words
A process for reducing the tackiness of a hot melt adhesive in slat form, which comprises contacting a stream of hot melt adhesive at a temperature above its melting point with an aqueous dispersion of a polymeric parting agent, whereby said parting agent provides a film-like coating which is substantially fused on the surfaces of said adhesive, characterized in that said parting agent is a polymeric powder having an average particle size less than about 20 microns and substantially free of particles greater than 30 microns and is selected from the group consisting of polyethylene, polypropylene, copolymers thereof and waxes, having a molecular weight of from 800 to 5,000 and a melting point in the range of 65 to 140°C.
Claim 2
Dependent Claim
120 words
A process for reducing the tackiness of a hot melt adhesive in slat form, which comprises contacting a stream of hot melt adhesive at a temperature above its melting point with an aqueous dispersion of a polymeric parting agent, whereby said parting agent provides a film-like coating which is substantially fused on the surfaces of said adhesive, characterized in that said parting agent is a polymeric powder having an average particle size less than about 20 microns and substantially free of particles greater than 30 microns and is selected from the group consisting of polyethylene, polypropylene, copolymers thereof and waxes, having a molecular weight of from 800 to 5,000 and a melting point in the range of 65 to 140°C.
Claim 3
Dependent Claim
19 words
The process of Claim 1, characterized in that the parting agent has a molecular weight of less than 2,000.
Claim 4
Dependent Claim
14 words
The process of Claim 1, characterized in that the parting agent is a wax.
Claim 5
Dependent Claim
18 words
The process of Claim 1, characterized in that the parting agent is polyethylene or an ethylene-vinyl acetate copolymer.
Claim 6
Dependent Claim
59 words
A non-blocking hot melt adhesive slat having a film-like coating which is substantially fused on the surfaces thereof, characterized in that said coating is a parting agent selected from the group consisting of polyethylene, polypropylene, copolymers thereof and waxes, having a molecular weight of from 800 to 5,000 and a melting point in the range of 65 to 140°C.
Claim 7
Dependent Claim
59 words
A non-blocking hot melt adhesive slat having a film-like coating which is substantially fused on the surfaces thereof, characterized in that said coating is a parting agent selected from the group consisting of polyethylene, polypropylene, copolymers thereof and waxes, having a molecular weight of from 800 to 5,000 and a melting point in the range of 65 to 140°C.
Claim 8
Dependent Claim
19 words
The article of Claim 5, characterized in that the parting agent has a molecular weight of less than 2,000.
Claim 9
Dependent Claim
14 words
The article of Claim 5, characterized in that the parting agent is a wax.
Claim 10
Dependent Claim
18 words
The article of Claim 5, characterized in that the parting agent is polyethylene or an ethylene-vinyl copolymer acetate.
References Cited (Backward Citations)
No citation records indexed.
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