US3894928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation process for the crosslinking of polyethylene with the use of acrylic and acetylenic compounds
Assignee: Kishimoto Sangyo Co Ltd
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Filing: 1973-04-26
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Granted: 1975-07-15
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Expires: 1993-04-26
Abstract
Abstract A method is provided for the cross-linking reformation of an ethylenic polymer which comprises subjecting said ethylenic polymer to ionizing radiation in the presence of A. AN ACRYLIC MONOMER CAPABLE OF BEING CROSS-LINKED WITH SAID ETHYLENIC POLYMER; AND B. AN ACETYLENIC COMPOUND OF THE FORMULA
Inventors
- 👤 Tsutomu Kagiya
- 👤 Miyuki Hagiwara
- 👤 Tsukasa Kagiya
- 👤 Masayoshi Sohara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:18
CPC Classifications
C; C08; C08F; C08F291/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
172 words
A METHOD FOR THE CROSS-LINKING REFORMATION OF A POLYMER OF ETHYLEENE SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND HALOGENATED POLYETHYLENE WHICH COMPRISES SUBJECTING SAID POLYMER TO IONIZING RADIATION IN THE PRESENCE OF A. 0.1 TO 5.0% BY WEIGHT BASED UPON SAID POLYMER OF AN ACRYLIC MONOMER CAPABLE OF BEING CROSS-LINKED WITH SAID POLYMER, SAID ACRYLIC MONOMER BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID, METHACRYLIC ACID, METHYL ACRYLATE, ETHYL ACRYLATE, N-PROPYL ACRYLATE, ISO-PROPYL ACRYLATE, N-BUTYL ACRYLATE, METHYL METHACRYLATE, CYCLOHEXYL ACRYLATE, PHENYL ACRYLATE, OXY-, NITRO-AND HALOPHENYL ACRYLATES, A- OR B-HALO (LOWER ALKYL)ACRYLATES, DIMETHYLENE DIACRYLATE, DIMETHYLENE DIMETHACRYLATE TETRAMETHYLENE DIACRYLATE AND HEXAMETHYLENE DIACRYLATE, AND B. 0.1 TO 5.0% BY WEIGHT BASED UPON SAID POLYMER OF AN ACETYLENIC COMPOUND CAPABLE OF BEING BLENDED WITH SAID POLYMER AT AN ELEVATED TEMPERATURE AND BEING A MEMBER OF THE GROUP CONSISTING OF PROPARGYL ALCOHOL, PROPIOLIC ACID, PROPARGYL ACRYLATE, PROPARGYL METHACRYLATES, PROPARGYL PROPIOLATE, DIPROPARGYL AMINE, DIMETHYLENE DIPROPIOLATE, TETRAMETHYLENE DIPROPIOLATE, HEXAMETHYLENE DIPROPIOLATE, DIPROPARGYL PHTHALATE, DIPROPARGYL ISOPHTHALATE, DIPROPARGYL TEREPHTHALATE, DIPROPARGYL MALEATE, DIPROPARGYL ITACONATE, TRIPROPARGYL AMINE AND TRIPROPARGYL TRIMELLITATE.
Claim 2
Independent Claim
172 words
A METHOD FOR THE CROSS-LINKING REFORMATION OF A POLYMER OF ETHYLEENE SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND HALOGENATED POLYETHYLENE WHICH COMPRISES SUBJECTING SAID POLYMER TO IONIZING RADIATION IN THE PRESENCE OF A. 0.1 TO 5.0% BY WEIGHT BASED UPON SAID POLYMER OF AN ACRYLIC MONOMER CAPABLE OF BEING CROSS-LINKED WITH SAID POLYMER, SAID ACRYLIC MONOMER BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID, METHACRYLIC ACID, METHYL ACRYLATE, ETHYL ACRYLATE, N-PROPYL ACRYLATE, ISO-PROPYL ACRYLATE, N-BUTYL ACRYLATE, METHYL METHACRYLATE, CYCLOHEXYL ACRYLATE, PHENYL ACRYLATE, OXY-, NITRO-AND HALOPHENYL ACRYLATES, A- OR B-HALO (LOWER ALKYL)ACRYLATES, DIMETHYLENE DIACRYLATE, DIMETHYLENE DIMETHACRYLATE TETRAMETHYLENE DIACRYLATE AND HEXAMETHYLENE DIACRYLATE, AND B. 0.1 TO 5.0% BY WEIGHT BASED UPON SAID POLYMER OF AN ACETYLENIC COMPOUND CAPABLE OF BEING BLENDED WITH SAID POLYMER AT AN ELEVATED TEMPERATURE AND BEING A MEMBER OF THE GROUP CONSISTING OF PROPARGYL ALCOHOL, PROPIOLIC ACID, PROPARGYL ACRYLATE, PROPARGYL METHACRYLATES, PROPARGYL PROPIOLATE, DIPROPARGYL AMINE, DIMETHYLENE DIPROPIOLATE, TETRAMETHYLENE DIPROPIOLATE, HEXAMETHYLENE DIPROPIOLATE, DIPROPARGYL PHTHALATE, DIPROPARGYL ISOPHTHALATE, DIPROPARGYL TEREPHTHALATE, DIPROPARGYL MALEATE, DIPROPARGYL ITACONATE, TRIPROPARGYL AMINE AND TRIPROPARGYL TRIMELLITATE.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein the ethylene polymer is polyethylene.
Claim 4
Dependent Claim
31 words
The method of claim 1 wherein the polymer of ethylene is polyethylene and said polyethylene is subjected to ionizing radiation in the presence of a. hexamethylene diacrylate; and b. dipropargyl maleate.
Claim 5
Dependent Claim
23 words
The method of claim 1 wherein Alpha -, Beta - or gamma -rays or accelerated electron beam is employed for the ionizing radiation.
References Cited (Backward Citations)
US3414498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |