US3607692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the radiation production of poromeric materials
Assignee: BASF SE
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Filing: 1969-09-17
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Granted: 1971-09-21
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Expires: 1989-09-17
Abstract
Abstract Production of poromeric materials by impregnating flat fibrous structures with liquids containing monoolefinically unsaturated monomers and high polymeric plastics in dissolved, emulsified or dispersed form, but no polyolefinically unsaturated monomers, freezing the impregnated fibrous structures, irradiating the frozen structures to effect polymerization of the monomers, and freeing the poromeric materials from the remaining liquid. The poromeric materials may be used as floor coverings, insulating materials, leather substitutes and coating materials.
Inventors
- 👤 Axe Sanner
- 👤 Carl Heinrich Krauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:13
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/28; C08F; C08F291/00; C08F291/18; D; D06; D06M; D06M14/00; D06M14/18; C08J2201/00; C08J2201/04; C08J2201/054; C08J2201/0545; C08J2201/0547; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10S521/00; Y10S521/915
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
33 words
A process as claimed in claim 1, wherein the at least partially solidified crystalline structure is irradiated with electromagnetic radiation having a wavelength of less than 0.70 Mu in the presence of photoinitiators.
Claim 2
Dependent Claim
30 words
A process as claimed in claim 1, wherein the monomers are acrylic or methacrylic esters of alcohols having 1 to 8 carbon atoms, acrylamides or methacrylamides or their N-methylol derivatives.
Claim 3
Dependent Claim
13 words
A process as claimed in claim 1, wherein the said liquid is water.
Claim 4
Dependent Claim
67 words
A process as claimed in claim 1, wherein the high polymeric plastics are in aqueous dispersion and are selected from the group consisting of homopolymers and copolymers of acrylic esters of alcohols having 1 to 8 carbon atoms, methacrylic esters of alcohols having 1 to 8 carbon atoms, acrylamides, methacrylamides, N-methylol compounds of acrylamides, N-methylol compounds of methacrylamides, and of mixtures of the said homopolymers and copolymers.
References Cited (Backward Citations)
No citation records indexed.
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 |