Patent US4514274A successfully refreshed from Google Patents.
Patent US3717485A successfully refreshed from Google Patents.
US3717485A
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Pattern wax compositions
Assignee: Atlantic Richfield Co
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Filing: 1971-03-25
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Granted: 1973-02-20
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Expires: 1991-03-25
Abstract
Abstract Novel pattern wax compositions for use in investment casting by the Lost Wax Process are disclosed. The pattern wax composition materials contain base waxes such as petroleum waxes, natural vegetable or mineral waxes, synthetic waxes and various resinous materials derived from the refining of petroleum and wood rosin, and mixtures of the above and solid filler particles. The base wax generally has a melting point of between about 120* to 180* F. The solid filler particles are imides of aromatic polycarboxylic acids.
Inventors
- 👤 A Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:32
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/44; B29C33/52; C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
50 words
A composition consisting essentially of from about 25 to about 95 parts by weight of said composition of a base wax melting in the range of about 120*-180* F., and about 5 to about 75 parts by weight of said composition of a filler selected from the group consisting of
Claim 2
Dependent Claim
50 words
A composition consisting essentially of from about 25 to about 95 parts by weight of said composition of a base wax melting in the range of about 120*-180* F., and about 5 to about 75 parts by weight of said composition of a filler selected from the group consisting of
Claim 3
Dependent Claim
40 words
A composition of claim 1 wherein AR is benzene, R2 is selected from carboxy and which is formed together with R1, b has a value of from 0 to 2 and c has a value of from 0 to 1.
Claim 4
Dependent Claim
30 words
A composition of claim 2 wherein b and c have a value of 0, a has a value of 1 to 2 and the base wax comprises a petroleum wax.
Claim 5
Dependent Claim
10 words
A composition of claim 3 wherein the filler is phthalimide.
Claim 6
Dependent Claim
48 words
A composition of claim 3 wherein the base wax comprises from about 5 to about 40 parts by weight paraffin wax, from about 5 to about 40 parts by weight of a microcrystalline wax and from about 0 to about 40 parts by weight of a vegetable wax.
Claim 7
Dependent Claim
44 words
A composition of claim 5 wherein the base wax contains an additional component of from 1 to about 50 parts by weight of one or more resinous components having a softening point within the range of from about 125* F. to about 350* F.
Claim 8
Dependent Claim
38 words
A composition of claim 6 wherein the resinous component material is selected from the group consisting of a vinyl toluene Alpha -methyl styrene interpolymer resin, a terpene resin, a dimerized resin acid from wood rosin and mixtures thereof.
Claim 9
Dependent Claim
43 words
A composition of claim 7 wherein the resinous component material is selected from the group consisting of a vinyl toluene Alpha -methyl styrene interpolymer resin, a terpene resin, a dimerized resin acid from wood rosin and mixtures thereof and the filler is phthalimide.
Claim 10
Dependent Claim
27 words
A composition of claim 8 wherein the resinous component is a mixture of vinyl toluene Alpha -methyl styrene interpolymer resin and dimerized resin acid from wood rosin.
Claim 11
Dependent Claim
23 words
A composition of claim 8 wherein the resinous component is a mixture of dimerized resin acid from wood rosin and a terpene resin.
Claim 12
Dependent Claim
88 words
In a process for forming a mold of desired shape in which a pattern material is shaped in a mold of the desired shape, the molded pattern material is coated with a slurry of finely-divided refractory material, the coating is dried, the coatings and drying being repeated to build up a total refractory coating of a desired thickness and the pattern material removed by melting from within the coating to form a refractory mold, the improvement which comprises using as said pattern material a composition of claim 1.
Claim 13
Dependent Claim
89 words
In a process for forming a mold of desired shape in which a pattern material is shaped in a mold of the desired shape, the molded pattern material is coated with a slurry of finely divided refractory material, the coating is dried, the coatings and drying being repeated to build up a total refractory coating of a desired thickness and the pattern material removed by melting from within the coating to form a refractory mold, the improvement which comprises using as said pattern material a composition of claim 3.
Claim 14
Dependent Claim
89 words
In a process for forming a mold of desired shape in which a pattern material is shaped in a mold of the desired shape, the molded pattern material is coated with a slurry of finely divided refractory material, the coating is dried, the coatings and drying being repeated to build up a total refractory coating of a desired thickness and the pattern material removed by melting from within the coating to form a refractory mold, the improvement which comprises using as said pattern material a composition of claim 4.
Claim 15
Dependent Claim
89 words
In a process for forming a mold of desired shape in which a pattern material is shaped in a mold of the desired shape, the molded pattern material is coated with a slurry of finely divided refractory material, the coating is dried, the coatings and drying being repeated to build up a total refractory coating of a desired thickness and the pattern material removed by melting from within the coating to form a refractory mold, the improvement which comprises using as said pattern material a composition of claim 8.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |