US4361676A
Expired / Lapsed
US
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Sag-resistant compositions
Assignee: 3M Co
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Filing: 1979-12-26
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Granted: 1982-11-30
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Expires: 1999-12-26
Abstract
Abstract Sag-resistant, pumpable compositions are described which comprise a liquid material dispersed throughout a cross-linked polymer matrix. The liquid material may be a polymerizable material or a polymer-containing material. The compositions of the invention have very broad utility, depending upon the particular ingredients present.
Inventors
- 👤 Jon H. Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:29
CPC Classifications
C; C09; C09J; C09J4/00; C08; C08F; C08F291/00; C08L; C08L75/00; C08L75/04; C09J175/00; C09J175/04; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
32 words
A sag-resistant, pumpable composition comprising a liquid material dispersed throughout a synthetic, continuous crosslinked polymer matrix, wherein said liquid material is selected from (a) liquid polymerizable materials, and (b) liquid polymer-containing materials.
Claim 2
Dependent Claim
32 words
A sag-resistant, pumpable composition comprising a liquid material dispersed throughout a synthetic, continuous crosslinked polymer matrix, wherein said liquid material is selected from (a) liquid polymerizable materials, and (b) liquid polymer-containing materials.
Claim 3
Dependent Claim
19 words
A composition in accordance with claim 1, wherein said crosslinked polymer matrix is derived from a free-radically polymerizable monomer.
Claim 4
Dependent Claim
16 words
A composition in accordance with claim 1, wherein said crosslinked polymer matrix is formed in situ.
Claim 5
Dependent Claim
23 words
A composition in accordance with claim 1, wherein said liquid material comprises a polymerizable material selected from epoxide-containing material, glycols, and silane-terminated materials.
Claim 6
Dependent Claim
19 words
A composition in accordance with claim 4, wherein said crosslinkable polymer matrix is derived from a free-radically polymerizable monomer.
Claim 7
Dependent Claim
29 words
A composition in accordance with claim 5, wherein said monomer is selected from polyfunctional acrylate or methacrylate monomers, divinyl aromatic monomers, and mixtures thereof with other free-radically polymerizable monomers.
Claim 8
Dependent Claim
31 words
A composition in accordance with claim 1, wherein said liquid material comprises a polymer-containing material selected from non-crosslinked acrylic polymer solutions, polyurethane resin solutions, rubber-resin solutions, silicone oils, and lubricating fluids.
Claim 9
Dependent Claim
25 words
A composition in accordance with claim 1, wherein said crosslinked polymer matrix comprises an acrylic polymer and wherein said liquid material comprises an epoxide-containing material.
Claim 10
Dependent Claim
17 words
A solid product comprising the composition of claim 4 in which said polymerizable material has been polymerized.
Claim 11
Dependent Claim
26 words
A solid product in accordance with claim 9, wherein the refractive index of said crosslinked polymer matrix substantially matches the refractive index of said polymerized material.
Claim 12
Dependent Claim
15 words
A solid product comprising the composition of claim 7 after substantial removal of volatile materials.
Claim 13
Dependent Claim
26 words
A solid product in accordance with claim 11, wherein the refractive index of said crosslinked polymer matrix substantially matches the refractive index of said other polymer.
Claim 14
Independent Claim
42 words
A method for rendering a liquid material sag-resistant comprising dispersing said liquid material throughout a synthetic, continuous crosslinked polymer matrix, thereby forming a sag-resistant pumpable composition, wherein said liquid material is selected from (a) liquid polymerizable materials, and (b) liquid polymer-containing materials.
Claim 15
Independent Claim
42 words
A method for rendering a liquid material sag-resistant comprising dispersing said liquid material throughout a synthetic, continuous crosslinked polymer matrix, thereby forming a sag-resistant pumpable composition, wherein said liquid material is selected from (a) liquid polymerizable materials, and (b) liquid polymer-containing materials.
Claim 16
Dependent Claim
19 words
A method in accordance with claim 13, wherein said crosslinked polymer matrix is derived from a free-radically polymerizable monomer.
Claim 17
Dependent Claim
16 words
A method in accordance with claim 13, wherein said crosslinked polymer matrix is formed in situ.
Claim 18
Dependent Claim
25 words
A method in accordance with claim 13, wherein said liquid material comprises a polymerizable material selected from isocyanate-terminated prepolymer, epoxide-containing material, glycols, and silane-terminated materials.
Claim 19
Dependent Claim
31 words
A method in accordance with claim 13, wherein said liquid material comprises a polymer-containing material selected from non-crosslinked acrylic polymer solutions, polyurethane resin solutions, rubber-resin solutions, silicone oils, and lubricating fluids.
Claim 20
Dependent Claim
26 words
A method in accordance with claim 13, wherein said crosslinked polymer matrix is formed in a solvent media, after which said liquid material is added thereto.
Claim 21
Dependent Claim
28 words
The composition in accordance with claim 1, wherein said crosslinked polymer matrix is formed from free-radically polymerizable monomer equivalent to 0.5 to 20% by weight of said composition.
Claim 22
Dependent Claim
28 words
The composition in accordance with claim 1, wherein said crosslinked polymer matrix is formed from free-radically polymerizable monomer equivalent to 0.5 to 10% by weight of said composition.
Claim 23
Dependent Claim
28 words
A method in accordance with claim 13, wherein said crosslinked polymer matrix is formed from free-radically polymerizable monomer equivalent to 0.5 to 20% by weight of said composition.
Claim 24
Dependent Claim
28 words
A method in accordance with claim 13, wherein said crosslinked polymer matrix is formed from free-radically polymerizable monomer equivalent to 0.5 to 10% by weight of said composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |