US5804610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making packaged viscoelastic compositions
Assignee: 3M Co
•
Filing: 1997-08-28
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Granted: 1998-09-08
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Expires: 2017-08-28
Abstract
Abstract Methods for preparing viscoelastic compositions (e.g., adhesives such as hot melt adhesives) in which a pre-viscoelastic composition (e.g., a pre-adhesive composition) is combined with a packaging material and then polymerized by transmissive energy.
Inventors
- 👤 Craig E. Hamer
- 👤 John D. Moon
- 👤 Thomas A. Kotnour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:10
CPC Classifications
C; C09; C09J; C09J4/00; B; B29; B29B; B29B13/00; B29B13/02; B29B13/022; B29C; B29C35/00; B29C35/02; B29C35/08; B29C35/0888; B29C37/00; B29C37/0067; B29C37/0075; B29C39/00; B29C39/02; B29C39/10; B29C67/00; B29C67/24; B65; B65D; B65D65/00; B65D65/38; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; B29K; B29K2105/00; B29K2105/0097; Y; Y10; Y10S; Y10S206/00; Y10S206/813; Y10T; Y10T428/00; Y10T428/28; Y10T428/2809; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/31935
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
113 words
A method of forming a hot melt adhesive composition comprising the steps of: (a) combining (i) a pre-adhesive composition which upon exposure to transmissive energy polymerizes to form a hot melt adhesive composition and (ii) a packaging material to form a packaged pre-adhesive composition; wherein said pre-adhesive composition has a viscosity less than about 50,000 centipoise at 25° C.; and (b) exposing said packaged pre-adhesive composition to transmissive energy to polymerize said pre-adhesive composition to form a packaged hot melt adhesive composition; wherein said packaging material is meltable and mixable with said holt melt adhesive so as to provide a coatable hot-melt adhesive composition when said packaged hot melt adhesive composition is melted.
Claim 2
Independent Claim
113 words
A method of forming a hot melt adhesive composition comprising the steps of: (a) combining (i) a pre-adhesive composition which upon exposure to transmissive energy polymerizes to form a hot melt adhesive composition and (ii) a packaging material to form a packaged pre-adhesive composition; wherein said pre-adhesive composition has a viscosity less than about 50,000 centipoise at 25° C.; and (b) exposing said packaged pre-adhesive composition to transmissive energy to polymerize said pre-adhesive composition to form a packaged hot melt adhesive composition; wherein said packaging material is meltable and mixable with said holt melt adhesive so as to provide a coatable hot-melt adhesive composition when said packaged hot melt adhesive composition is melted.
Claim 3
Dependent Claim
31 words
A method according to claim 1 comprising combining said pre-adhesive composition with said packaging material by completely surrounding said pre-adhesive composition with said packaging material to form said packaged pre-adhesive composition.
Claim 4
Dependent Claim
26 words
A method according to claim 1 comprising combining said pre-adhesive composition with said packaging material by disposing said pre-adhesive composition on the surface of a sheet.
Claim 5
Dependent Claim
57 words
A method according to claim 1 comprising combining said pre-adhesive composition with said packaging material by disposing said pre-adhesive composition between a pair of sheets, at least one of which is meltable and mixable with said holt melt adhesive so as to provide a coatable hot-melt adhesive composition when said packaged hot melt adhesive composition is melted.
Claim 6
Dependent Claim
47 words
A method according to claim 1 comprising combining said pre-adhesive composition with said packaging material by introducing said pre-adhesive composition into a hollow profile in which the ratio of the length to the square root of the cross-sectional area of the profile is at least about 30:1.
Claim 7
Dependent Claim
15 words
A method according to claim 1 further comprising melting said packaged hot melt adhesive composition.
Claim 8
Dependent Claim
39 words
A method according to claim 1 comprising contacting said packaged pre-adhesive composition with a heat exchange medium while exposing said packaged pre-adhesive composition to transmissive energy to polymerize said pre-adhesive composition to form a packaged hot melt adhesive composition.
Claim 9
Dependent Claim
19 words
A method according to claim 7 comprising contacting said packaged pre-adhesive composition with a heat exchange medium comprising water.
Claim 10
Dependent Claim
21 words
A method according to claim 1 wherein said pre-adhesive composition has a viscosity less than about 50 centipoise at 25° C.
Claim 11
Dependent Claim
21 words
A method according to claim 1 wherein said pre-adhesive composition has a melting point of no greater than about 40° C.
Claim 12
Dependent Claim
21 words
A method according to claim 1 wherein said pre-adhesive composition has a melting point of no greater than about 25° C.
Claim 13
Dependent Claim
21 words
A method according to claim 1 wherein said pre-adhesive composition has a melting point of no greater than about 0° C.
Claim 14
Dependent Claim
104 words
A method according to claim 1 wherein said pre-adhesive composition comprises: (a) 50 to 100 parts by weight of a polymerizable component comprising at least one acrylic or methacrylic ester of a non-tertiary alkyl alcohol in which the alkyl group contains 1 to 20 carbon atoms; (b) 0 to 50 parts by weight of a polymerizable component comprising at least one modifying monomer, other than said acrylic or methacrylic ester, copolymerizable with component (a), the sum of (a) and (b) amounting to 100 parts by weight; (c) an effective amount of a polymerization initiator; and (d) an effective amount of a chain transfer agent.
Claim 15
Dependent Claim
15 words
A method according to claim 13 wherein said pre-adhesive composition further comprises a cross-linking agent.
Claim 16
Dependent Claim
28 words
A method according to claim 1 comprising exposing said packaged pre-adhesive composition to ultraviolet radiation to polymerize said pre-adhesive composition to form a packaged hot melt adhesive composition.
Claim 17
Dependent Claim
28 words
A method according to claim 1 comprising exposing said packaged pre-adhesive composition to thermal conduction to polymerize said pre-adhesive composition to form a packaged hot melt adhesive composition.
Claim 18
Dependent Claim
32 words
A method according to claim 1 comprising exposing said packaged pre-adhesive composition to transmissive energy to convert at least about 80% of said pre-adhesive composition to said packaged hot melt adhesive composition.
Claim 19
Dependent Claim
32 words
A method according to claim 1 comprising exposing said packaged pre-adhesive composition to transmissive energy to convert at least about 90% of said pre-adhesive composition to said packaged hot melt adhesive composition.
Claim 20
Independent Claim
121 words
A method of forming a hot melt adhesive composition comprising the steps of: (a) combining (i) a pre-adhesive composition which upon exposure to transmissive energy polymerizes to form a hot melt adhesive composition and (ii) a packaging material to form a packaged pre-adhesive composition; wherein said pre-adhesive composition has a viscosity less than about 50,000 centipoise at 25° C. (b) exposing said packaged pre-adhesive composition to transmissive energy to polymerize said pre-adhesive composition to form a packaged hot melt adhesive composition; and (c) melting said packaged hot melt adhesive composition; wherein said packaging material is meltable and mixable with said holt melt adhesive so as to provide a coatable hot-melt adhesive composition when said packaged hot melt adhesive composition is melted.
Claim 21
Independent Claim
121 words
A method of forming a hot melt adhesive composition comprising the steps of: (a) combining (i) a pre-adhesive composition which upon exposure to transmissive energy polymerizes to form a hot melt adhesive composition and (ii) a packaging material to form a packaged pre-adhesive composition; wherein said pre-adhesive composition has a viscosity less than about 50,000 centipoise at 25° C. (b) exposing said packaged pre-adhesive composition to transmissive energy to polymerize said pre-adhesive composition to form a packaged hot melt adhesive composition; and (c) melting said packaged hot melt adhesive composition; wherein said packaging material is meltable and mixable with said holt melt adhesive so as to provide a coatable hot-melt adhesive composition when said packaged hot melt adhesive composition is melted.
Claim 22
Independent Claim
134 words
A method of forming a hot melt adhesive composition comprising the steps of: (a) combining (i) a pre-adhesive composition which upon exposure to transmissive energy polymerizes to form a hot melt adhesive composition and (ii) a packaging material by disposing said pre-adhesive composition between a pair of sheets to form a packaged pre-adhesive composition; wherein said pre-adhesive composition has a viscosity less than about 50,000 centipoise at 25° C.; (b) exposing said packaged pre-adhesive composition to transmissive energy to polymerize said pre-adhesive composition to form a packaged hot melt adhesive composition; and (c) melting said packaged hot melt adhesive composition; wherein at least one of said sheets is meltable and mixable with said hot melt adhesive so as to provide a coatable hot-melt adhesive composition when said packaged hot melt adhesive composition is melted.
Claim 23
Independent Claim
134 words
A method of forming a hot melt adhesive composition comprising the steps of: (a) combining (i) a pre-adhesive composition which upon exposure to transmissive energy polymerizes to form a hot melt adhesive composition and (ii) a packaging material by disposing said pre-adhesive composition between a pair of sheets to form a packaged pre-adhesive composition; wherein said pre-adhesive composition has a viscosity less than about 50,000 centipoise at 25° C.; (b) exposing said packaged pre-adhesive composition to transmissive energy to polymerize said pre-adhesive composition to form a packaged hot melt adhesive composition; and (c) melting said packaged hot melt adhesive composition; wherein at least one of said sheets is meltable and mixable with said hot melt adhesive so as to provide a coatable hot-melt adhesive composition when said packaged hot melt adhesive composition is melted.
Claim 24
Dependent Claim
21 words
A method according to claim 20 comprising removing one of said sheets prior to melting said packaged hot melt adhesive composition.
Claim 25
Independent Claim
114 words
A method of forming an adhesive composition comprising the steps of: (a) combining (i) a pre-adhesive composition which upon exposure to ultraviolet radiation, thermal conduction, or a combination thereof polymerizes to form an adhesive composition and (ii) a packaging material to form a packaged pre-adhesive composition, wherein said pre-adhesive composition has a viscosity less than about 50,000 centipoise at 25° C.; and (b) exposing said packaged pre-adhesive composition to ultraviolet radiation, thermal conduction, or a combination thereof to polymerize said pre-adhesive composition to form a packaged adhesive composition; wherein said packaging material is meltable and mixable with said adhesive so as to provide a coatable adhesive composition when said packaged adhesive composition is melted.
Claim 26
Independent Claim
114 words
A method of forming an adhesive composition comprising the steps of: (a) combining (i) a pre-adhesive composition which upon exposure to ultraviolet radiation, thermal conduction, or a combination thereof polymerizes to form an adhesive composition and (ii) a packaging material to form a packaged pre-adhesive composition, wherein said pre-adhesive composition has a viscosity less than about 50,000 centipoise at 25° C.; and (b) exposing said packaged pre-adhesive composition to ultraviolet radiation, thermal conduction, or a combination thereof to polymerize said pre-adhesive composition to form a packaged adhesive composition; wherein said packaging material is meltable and mixable with said adhesive so as to provide a coatable adhesive composition when said packaged adhesive composition is melted.
Claim 27
Dependent Claim
16 words
A method according to claim 22 wherein said adhesive composition comprises a pressure sensitive adhesive composition.
Claim 28
Dependent Claim
16 words
A method according to claim 22 wherein said adhesive composition comprises a hot melt adhesive composition.
Claim 29
Dependent Claim
31 words
A method according to claim 22 comprising combining said pre-adhesive composition with said packaging material by completely surrounding said pre-adhesive composition with said packaging material to form said packaged pre-adhesive composition.
Claim 30
Dependent Claim
13 words
A method according to claim 22 further comprising melting said packaged adhesive composition.
Claim 31
Dependent Claim
21 words
A method according to claim 22 further comprising removing said packaging material from said adhesive composition and melting said adhesive composition.
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