UST860002I4 - Defensive publication - Google Patents
Defensive publication Download PDFInfo
- Publication number
- UST860002I4 UST860002I4 US860002DH UST860002I4 US T860002 I4 UST860002 I4 US T860002I4 US 860002D H US860002D H US 860002DH US T860002 I4 UST860002 I4 US T860002I4
- Authority
- US
- United States
- Prior art keywords
- defensive publication
- application
- pentene
- methyl
- poly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
Definitions
- the process of this application enables the production of a fiber of poly(4-methyl-1-pentene) having a reduced specific viscosity (RSV) greater than 5 as measured on a 0.1% solution in decahydronaphthalene at 135 C.
- RSV specific viscosity
- orienting the filament by stretching from 250 to The oriented fiber exhibits excellent physical properties including high temperature strength retention and good abrasion resistance.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Description
7 5 1? 0,0 0 a DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 O.G. 1221. Identification is by serial number of the application and the heading indicates the number of pages of specification, including claims, and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for A30 cents per sheet.
Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Ofiice makes no assertion as to the novelty of the disclosed subject matter,
PUBLISHED MARCH 18, 1969 762,159 PROCESS FOR DRY SPINNING POLY(4-METHYL/- l-PENTENE) Gerald A. McFarren, Wilmington, Del., assignor to Hercules Incorporated, Wilmington, Del., a corporation of Delaware Continuation-impart of abandoned application Ser. No. 375,962, June 17, 1964. This application Sept. 24, 1968. Published Mar. 18, 1969.
Class 264-210 No Drawing. 11 Pages Specification Fibers of high molecular Weight poly(4-methyl-l-pentene) have long been desired because of the high melting point of the polymer (above 230 C.). However, both melt and solution spinning have resulted in severe polymer degradation and the fiber so produced had poor physical properties.
The process of this application enables the production of a fiber of poly(4-methyl-1-pentene) having a reduced specific viscosity (RSV) greater than 5 as measured on a 0.1% solution in decahydronaphthalene at 135 C. The
following steps are carried out:
(1) formation of a gel containing 20-60% by weight of a poly(4-methyl-l-pentene), having an RSV greater than 5, from the dry polymer, or the solventwet filter cake from the polymerizer, by heating with a suitable diluent (hydrocarbon or chlorinated hydrocarbon having a boiling point of 175 to 300C to 150-225 C. until dissolved and then cooling,
(2) charging said gel to an extruder heated c0160- (3) extruding a filament,
(4) passing the filament through solvent removal means, and
(5) orienting the filament by stretching from 250 to The oriented fiber exhibits excellent physical properties including high temperature strength retention and good abrasion resistance.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76215968A | 1968-09-24 | 1968-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST860002I4 true UST860002I4 (en) | 1969-03-18 |
Family
ID=25064279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US860002D Pending UST860002I4 (en) | 1968-09-24 | 1968-09-24 | Defensive publication |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST860002I4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551296A (en) | 1982-03-19 | 1985-11-05 | Allied Corporation | Producing high tenacity, high modulus crystalline article such as fiber or film |
-
1968
- 1968-09-24 US US860002D patent/UST860002I4/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551296A (en) | 1982-03-19 | 1985-11-05 | Allied Corporation | Producing high tenacity, high modulus crystalline article such as fiber or film |
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