US3607332A
Expired / Lapsed
US
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Modeling composition
Assignee: 3M Co
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Filing: 1968-03-20
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Granted: 1971-09-21
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Expires: 1988-03-20
Abstract
Abstract Thermoplastic modeling compositions which are resistant to cracking on standing after they have been molded. Preferably lightweight, they are relatively soft and easily molded at elevated temperatures and are slump or distortion-resistant but still pliable and finger-pressure deformable at room temperature. Distributed throughout the modeling compositions are rigid, regularly shaped microparticles, e.g., in the form of spheres or platelets.
Inventors
- 👤 Harold T Wingfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:19
CPC Classifications
B; B44; B44C; B44C3/00; B44C3/04; C; C08; C08K; C08K3/00; C08K3/34; C08K3/346
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
124 words
The composition of claim 1 wherein said claylike mass has a weight percent compositional analysis comprising the following: finely divided solid inorganic filler including finely divided clay 10 To 50 sulfur 0 to 40 Plasticizing organic vehicle including: hydrocarbon waxes 3 to 20 oils 5 to 25 greases 0 to 20 wherein said clay is selected from the group consisting of naturally occurring clays and the reaction products resulting from cation exchange reactions between organic bases and montmorillonite and wherein solid components of said plasticizing organic vehicle have melting or softening points of the order of 100* F. to 175* F., wherein said regularly shaped rigid microparticles are selected from the group consisting of rigid, hollow microbubbles, solid microspheres, platelet shaped particles, and microcylinders.
Claim 2
Dependent Claim
40 words
The composition of claim 2 wherein said regularly shaped microparticles are rigid, hollow microbubbles having an average bubble diameter of the order of 5 to 150 and having an average bubble density or the order of 0.10 to 0.6 g./cc.
Claim 3
Dependent Claim
19 words
The composition of claim 3 wherein the microbubbles have average densities of the order of 0.20 to 0.40 g./cc.
Claim 4
Dependent Claim
21 words
The composition of claim 3 wherein said rigid, hollow microbubbles are glass and have been treated with a glass treatment agent.
Claim 5
Dependent Claim
27 words
The composition of claim 5 wherein the flask treatment agent is selected from the group consisting of glass coupling agents of the Werner complex-type and organosilane compounds.
Claim 6
Dependent Claim
133 words
A thermoplastic light weight modeling composition, having plastic and moldable properties at temperatures of the order of 100* F. to 150* F. so as to be relatively soft and easily molded at said temperature and being more rigid and slump or distortion-resistant but still pliable and finger-pressure deformable at room temperature comprising an intimate mixture of the following components: lanolin, dimer acid, zinc stearate, reaction products of cation exchange reactions between organic bases and bentonite, sulfur, and between about 10 and 50 volume percent of rigid, hollow microbubbles having average diameters of the order of 10 150 microns and average densities of the order of 0.010 to 0.60 microns and average densities of the order of 0.10 to 0.60 g./cc., said composition being resistant to cracking on standing after it has been molded.
References Cited (Backward Citations)
US861294A
Cited
US3365315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |