EP0243956A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Adhesive compositions
Assignee: Asahi Kasei Corp
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Filing: 1987-04-29
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Granted: —
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Expires: 2007-04-29
Abstract
Abstract An adhesive composition comprising 100 parts by weight of a block copolymer (a) containing of at least one polymer block composed mainly of a vinyl aromatic hydrocarbon and at least one polymer block composed mainly of butadiene in which (i) the vinyl aromatic hydrocarbon content [S] is 10 to 30% by weight, (ii) the 1,2-vinyl content of butadiene portion [V] is 20 to 50%, and (iii) the relationship between said vinyl aromatic hydrocarbon content [S] and said 1,2-vinyl content of butadiene portion [V] satisfies the formula: 40 to 200 parts by weight of a tackifier (b), and, optionally contain various stabilizers; and a process for producing said composition.
Inventors
- 👤 Toshinori Shiraki
- 👤 Yasuo Hattori
- 👤 Masao Karouji
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 00:06
CPC Classifications
C; C09; C09J; C09J109/00; C09J153/00; C09J153/02; C08; C08F; C08F297/00; C08F297/02; C08F297/04; C08L; C08L53/00; C08L53/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
107 words
An adhesive composition characterized by comprising a blend of 100 parts by weight of a block copolymer (a) containing of at least one polymer block composed mainly of a vinyl aromatic hydrocarbon and at least one polymer block composed mainly of butadiene in which (i) the content of said vinyl aromatic hydrocarbon [S] is 10 to 30% by weight, (ii) the content of 1,2-vinyl in said butadiene portion [V] is 20 to 50%, and (iii) the relationship between said vinyl aromatic hydrocarbon content [S] and said 1,2-vinyl content in butadiene portion [V] satisfies the following formula: and 40 to 200 parts by weight of a tackifier (b).
Claim 2
Dependent Claim
107 words
An adhesive composition characterized by comprising a blend of 100 parts by weight of a block copolymer (a) containing of at least one polymer block composed mainly of a vinyl aromatic hydrocarbon and at least one polymer block composed mainly of butadiene in which (i) the content of said vinyl aromatic hydrocarbon [S] is 10 to 30% by weight, (ii) the content of 1,2-vinyl in said butadiene portion [V] is 20 to 50%, and (iii) the relationship between said vinyl aromatic hydrocarbon content [S] and said 1,2-vinyl content in butadiene portion [V] satisfies the following formula: and 40 to 200 parts by weight of a tackifier (b).
Claim 3
Dependent Claim
105 words
An adhesive composition according to Claim 1, characterized by further containing, per 100 parts by weight of said block copolymer (a), 0.05 to 5 parts by weight of at least one member selected from the group consisting of phenolic compounds (c) represented by the general formula [I] or [II]: and wherein Z is OH or R1 is an alkyl group having 1 to 4 carbon atoms, R 2 is an alkenyl group having 2 to 4 carbon atoms, R 3 is a tert-butyl group or a cyclohexyl group, and R 4 is a hydrogen atom or an alkyl group having 1 to 18 carbon atoms.
Claim 4
Dependent Claim
43 words
An adhesive composition according to Claim 2, characterized in that the phenolic compound (c) represented by the above general formula [I] is one selected from the group consisting of 2,2'-methylene-bis-(4-methyl-6-tert-butylphenol) monoacrylate, 2,2'-methylene-bis-(4,6-di-tert-butylphenol) monoacrylate, 2,2'-ethylidene- bis-(4,6-di-tert-butylphenol) monoacrylate, 2,2'-methylene-bis-(4-methyl-6-tert-butylphenol) diacrylate, 2,2'-methylene-bis-(4,6-di-tert-butylphenol) diacrylate, and 2,2'-ethylidene-bis-(4,6-di-tert-butylphenol) diacrylate.
Claim 5
Dependent Claim
34 words
An adhesive composition according to Claim 2, characterized in that the phenolic compound (c) represented by the above general formula [II] is one selected from the group consisting of 3,9-bis-[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2, 4,8,10-tetraoxaspiro [5·5]undecane and 3,9-bis-[2-[3-(3-tert-butyl-4-hydroxy-5-isopropylphenyl)propinyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5·5]undecane.
Claim 6
Dependent Claim
37 words
An adhesive composition according to any of the claims 1 to 4, characterized by further containing 0.05 to 5 parts by weight of a sulfur-containing stabilizer (d) per 100 parts by weight of said block copolymer (a).
Claim 7
Dependent Claim
70 words
An adhesive composition according to Claim 5, characterized in that said sulfur-containing stabilizer (d) is at least one member selected from the group. consisting of compounds represented by the general formula [III] or [IV]: and, wherein R 5 is an alkyl group having 3 to 20 carbon atoms; and each of R 6 and R 7 is a hydrogen atom or an alkyl group having 1 to 18 carbon atoms.
Claim 8
Dependent Claim
38 words
An adhesive composition according to Claim 6, characterized in that the sulfur-containing stabilizer (d) represented by the general formula [III] or [IV] is pentaerythritol-tetrakis(3-dodecylthiopropionate), or is one selected from the group consisting of 3,9-bis-(2-dodecylthioethyl)-2,4,8,10-tetraoxaspiro[5 ' 5]undecane and 3,9-bis-(2-octadecylthiopropyl}-2,4,8,10-tetraoxaspiro-[5·5]undecane.
Claim 9
Dependent Claim
37 words
An adhesive composition according to any of the claims 1 to 7, characterized by further containing 5 to 150 parts by weight of a softener (component (f)) per 100 parts by weight of said block copolymer (a).
Claim 10
Dependent Claim
55 words
An adhesive composition according to any of the claims 1 to 8, characterized in that the tackifier (b) is at least one member selected from the group consisting of terpene resin, aromatic-compound-modified terpene resins, alicyclic saturated petroleum resins, rosin esters, disproportionated rosin esters, completely hydrogenated rosin esters, aliphatic petroleum resins, and modified aliphatic petroleum resins.
Claim 11
Dependent Claim
109 words
A process for producing an adhesive, characterized by blending 100 parts by weight of a block copolymer (a) containing at least one polymer block composed mainly of a vinyl aromatic hydrocarbon and at least one polymer block composed mainly of butadiene with 40 to 200 parts by weight of a tackifier (b), (i) said block copolymer (a) having a vinyl aromatic hydrocarbon content [S] of 10 to 30% by weight (ii) said block copolymer (a) having a 1,2-vinyl content of butadiene portion [V] of 20 to 50%, and (iii) the relationship between said vinyl aromatic hydrocarbon content [S] and said 1,2-vinyl content of butadiene portion [V] satisfying the formula:
Claim 12
Dependent Claim
109 words
A process for producing an adhesive, characterized by blending 100 parts by weight of a block copolymer (a) containing at least one polymer block composed mainly of a vinyl aromatic hydrocarbon and at least one polymer block composed mainly of butadiene with 40 to 200 parts by weight of a tackifier (b), (i) said block copolymer (a) having a vinyl aromatic hydrocarbon content [S] of 10 to 30% by weight (ii) said block copolymer (a) having a 1,2-vinyl content of butadiene portion [V] of 20 to 50%, and (iii) the relationship between said vinyl aromatic hydrocarbon content [S] and said 1,2-vinyl content of butadiene portion [V] satisfying the formula:
Claim 13
Dependent Claim
115 words
CLAIMS FOR THE CONTRACTING STATE ES 1. A process for producing an adhesive composition characterized by blending 100 parts by weight of a block copolymer (a) containing of at least one polymer block composed mainly of a vinyl aromatic hydrocarbon and at least one polymer block composed mainly of butadiene in which (i) the content of said vinyl aromatic hydrocarbon [S] is 10 to 30% by weight, (ii) the content of 1,2-vinyl in said butadiene portion [V] is 20 to 50%, and (iii) the relationship between said vinyl aromatic hydrocarbon content [S] and said 1,2-vinyl content in butadiene portion [V] satisfies the following formula: and 40 to 200 parts by weight of a tackifier (b).
Claim 14
Dependent Claim
105 words
A process according to Claim 1, characterized by further blending, per 100 parts by weight of said block copolymer (a), 0.05 to 5 parts by weight of at least one member selected from the group consisting of phenolic compounds (c) represented by the general formula [I] or [II]: and wherein Z is OH or R 1 is an alkyl group having 1 to 4 carbon atoms, R 2 is an alkenyl group having 2 to 4 carbon atoms, R 3 is a tert-butyl group or a cyclohexyl group, and R 4 is a hydrogen atom or an alkyl group having 1 to 18 carbon atoms.
Claim 15
Dependent Claim
42 words
A process according to Claim 2, characterized in that the phenolic compound (c) represented by the above general formula [I] is one selected from the group consisting of 2,2'-methylene-bis-(4-methyl-6-tert-butylphenol) monoacrylate, 2,2'-methylene-bis-(4,6-di-tert-butylphenol) monoacrylate, 2,2'-ethylidene- bis-(4,6-di-tert-butylphenol) monoacrylate, 2,2'-methylene-bis-(4-methyl-6-tert-butylphenol) diacrylate, 2,2'-methylene-bis-(4,6-di-tert-butylphenol) diacrylate, and 2,2'-ethyl-idene-bis-{4,6-di-tert-butylphenol) diacrylate.
Claim 16
Dependent Claim
33 words
A process according to Claim 2, characterized in that the phenolic compound (c) represented by the above general formula [II] is one selected from the group consisting of 3,9-bis-[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2, 4,8,10-tetraoxaspiro [5·5]undecane and 3,9-bis-[2-(3-(3-tert-butyl-4-hydroxy-5-isopropylphenyl)propinyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5·5]undecane.
Claim 17
Dependent Claim
36 words
A process according to any of the Claims 1 to 4, characterized by further blending 0.05 to 5 parts by weight of a sulfur-containing stabilizer (d) per 100 parts by weight of said block copolymer (a).
Claim 18
Dependent Claim
67 words
A process according to Claim 5, characterized in that said sulfur-containing stabilizer (d) is at least one member selected from the group consisting of compounds represented by the general formula [III] or [IV]: and, wherein R 5 is an alkyl group having 3 to 20 carbon atoms; and each of R6 and R7 is a hydrogen atom or an alkyl group having 1 to 18 carbon atoms.
Claim 19
Dependent Claim
35 words
A process according to Claim 6, characterized in that the sulfur-containing stabilizer (d) represented by the general formula [III] or [IV] is pentaerythritol-tetrakis(3-dodecylthiopropionate), or is one selected from the group consisting of 3,9-bis-(2-dodecylthioethyl)-2,4,8,10-tetraoxaspiro[5·5]undecane and 3,9-bis-(2-octadecylthiopropyl)-2,4,8,10-tetraoxaspiro-[5·5]undecane.
Claim 20
Dependent Claim
36 words
A process according to any of the Claims 1 to 7, characterized by further blending 5 to 150 parts by weight of a softener (component (f)) per 100 parts by weight of said block copolymer (a).
Claim 21
Dependent Claim
56 words
9 . A process according to any of the Claims 1 to 8, characterized in that the tackifier (b) is at least one member selected from the group consisting of terpene resin, aromatic-compound-modified terpene resins, alicyclic saturated petroleum resins, rosin esters, disproportionated rosin esters, completely hydrogenated rosin esters, aliphatic petroleum resins, and modified aliphatic petroleum resins.
References Cited (Backward Citations)
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