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US3784005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive package and method of compounding resins therewith
Assignee: US CHEM PLASTICS Inc
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Filing: 1971-12-20
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Granted: 1974-01-08
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Expires: 1991-12-20
Abstract
Abstract A package to contain materials to be added to a resin formulation containing vinylic monomer comprises a thin-walled plastic envelope which is soluble in the resin formulation. Preferably the envelope is made of polystyrene film. The polystyrene envelope is formed from sheet stock over a hot mandrel by sliding a rigid container onto the mandrel over a sheet of flexible plastic film overlying the mandrel. The sheet of film is large enough to form a lining for the rigid container with flaps of the film protruding from the rigid container. After materials are placed inside the lined rigid container, the flaps are sealed to form an enclosed film package within the rigid container. Additive materials which would themselves dissolve or attack the plastic envelope may be carried in an inert vehicle and/or be coated with an inert coating material to protect the envelope during storage.
Inventors
- 👤 C Mcvay M Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:41
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
48 words
The package of claim 1 wherein said solvent component is a vinyl monomer and wherein said film is selected from the class consisting of polymers and copolymers of one or more of the following: styrene, methyl styrene, binyl toluene, methyl methacrylate, diallyl phthalate, triallyl cyanurate, and methyl acrylate.
Claim 2
Dependent Claim
13 words
The package of claim 1 wherein said solvent component is a vinyl monomer.
Claim 3
Dependent Claim
86 words
A package for introducing additives to polyester resin formulations containing at least one solvent component, comprising a rigid container having a surface - clinging lining formed on the inside thereof, said lining comprising a removable envelope formed of a film of synthetic organic polymeric material not greater than about two mils thick, and soluble in said solvent component, and at least one additive contained within said envelope, which additive includes a solid catalyst for said polyester resin, said catalyst being dispersed in an inert liquid vehicle.
Claim 4
Dependent Claim
16 words
The package of claim 4 wherein said additive further includes a colorant for said polyester resin.
Claim 5
Dependent Claim
21 words
The package of claim 4 wherein said catalyst is benzoyl peroxide and said liquid vehicle is s substantially aromatic-free mineral oil.
Claim 6
Dependent Claim
14 words
The package of claim 1 wherein said additive includes a colorant for said resin.
Claim 7
Dependent Claim
83 words
A package for introducing additives to resin formulations containing at least one solvent component, comprising a rigid container having a surface - clinging lining formed on the inside thereof, said lining comprising a removable envelope formed of a film of synthetic organic polymeric material not greater than about two mils thick, and soluble in said solvent component, and at least one additive contained within said envelope, which additive is reactive with said organic polymeric material, and is suspended in an inert liquid vehicle.
Claim 8
Dependent Claim
12 words
The package of claim 8 wherein said inert vehicle is mineral oil.
Claim 9
Dependent Claim
15 words
The package of claim 8 wherein said solvent component is one or more vinyl monomers.
Claim 10
Dependent Claim
13 words
The package of claim 8 wherein said solvent component is a vinyl monomer.
Claim 11
Dependent Claim
48 words
The package of claim 8 wherein said solvent component is a vinyl monomer and wherein said film is selected from the class consisting of polymers and copolymers of one or more of the following: styrene, methyl styrene, vinyl toluene, methyl methacrylate, diallyl phthalate, triallyl cyanurate, and methyl acrylate.
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |