US4324871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt adhesive compositions containing a terpene-phenolic resin, ethylene copolymer and alkenyl succinic anhydride
Assignee: Chevron USA Inc
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Filing: 1981-01-28
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Granted: 1982-04-13
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Expires: 2001-01-28
Abstract
Abstract Hot melt adhesive compositions are provided which contain (a) about 10-30 weight % of an alkenyl succinic anhydride, (b) abut 20-60 weight % of an ethylene copolymer, and (c) about 10-40 weight % of a tackifying resin which is a terpene-phenolic resin.
Inventors
- 👤 Vikramkumar Acharya
- 👤 Pallavoor R. Lakshmanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:31
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C08; C08F; C08F255/00; C08F255/02; C09J131/00; C09J131/02; C09J131/04; C08L; C08L2666/00; C08L2666/02; C08L2666/28; C08L2666/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A hot melt adhesive composition consisting essentially of: (a) 10-30 weight % of an alkenyl succinic anhydride, (b) 20-60 weight % of an ethylene copolymer, and (c) 10-40 weight % of a tackifying resin; said alkenyl succinic anhydride having the structure: ##STR2## where R is an alkyl group containing at least about 15 carbon atoms; said ethylene copolymer having polymerized therein at least 40 weight % polymerized ethylene and the balance one or more polymerized monomers from the group consisting of vinyl acetate, acrylic and methacrylic acid and alkyl esters of acrylic and methacrylic acid; and said tackifying resin being a terpene-phenolic resin having a Ring and Ball softening point of about 80°-135° C.
Claim 2
Dependent Claim
114 words
A hot melt adhesive composition consisting essentially of: (a) 10-30 weight % of an alkenyl succinic anhydride, (b) 20-60 weight % of an ethylene copolymer, and (c) 10-40 weight % of a tackifying resin; said alkenyl succinic anhydride having the structure: ##STR2## where R is an alkyl group containing at least about 15 carbon atoms; said ethylene copolymer having polymerized therein at least 40 weight % polymerized ethylene and the balance one or more polymerized monomers from the group consisting of vinyl acetate, acrylic and methacrylic acid and alkyl esters of acrylic and methacrylic acid; and said tackifying resin being a terpene-phenolic resin having a Ring and Ball softening point of about 80°-135° C.
Claim 3
Dependent Claim
32 words
A composition of claim 1 containing about 15-25 weight % of the alkenyl succinic anhydride, about 25-50 weight % of the ethylene copolymer, and about 15-35 weight % of the tackifying resin.
Claim 4
Dependent Claim
17 words
A composition of claim 1 in which the ethylene polymer has a melt index of about 1-100.
Claim 5
Dependent Claim
19 words
A composition of claim 1 in which the ethylene copolymer is a binary copolymer of ethylene and vinyl acetate.
Claim 6
Dependent Claim
25 words
A composition of claim 1 in which the ethylene copolymer is a binary copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid.
Claim 7
Dependent Claim
19 words
A composition of claim 2 in which the ethylene copolymer is a binary copolymer of ethylene and vinyl acetate.
Claim 8
Dependent Claim
25 words
A composition of claim 2 in which the ethylene copolymer is a binary copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid.
Claim 9
Dependent Claim
19 words
A composition of claim 3 in which the ethylene copolymer is a binary copolymer of ethylene and vinyl acetate.
Claim 10
Dependent Claim
25 words
A composition of claim 3 in which the ethylene copolymer is a binary copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-12 | 1985-10-12 | 1986-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-12 | 1989-10-12 | 1990-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-12 | 1993-10-12 | 1994-04-13 | $7700.00 | Window Closed / Lapsed |