GB572738A - Improvements in polymeric materials - Google Patents
Improvements in polymeric materialsInfo
- Publication number
- GB572738A GB572738A GB1445441A GB1445441A GB572738A GB 572738 A GB572738 A GB 572738A GB 1445441 A GB1445441 A GB 1445441A GB 1445441 A GB1445441 A GB 1445441A GB 572738 A GB572738 A GB 572738A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hexamethylene
- working
- hydroquinone
- polyester
- isocyanate
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/82—Post-polymerisation treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Organic di-isocyanate modified polyesters or polyester-amides are given improved physical properties by mechanically working them whilst in a plastic condition. The products have increased solubility in organic liquids and a decreased plasticity, while their solutions are progressively less viscous as they are made from polymers which have been subjected to progressively longer periods of working. The mechanical working may be performed on a two-roll, differentially-geared rubber mill, at a temperature such that the polymer forms a running band on the slow-moving roll, or an internal-mixer may be used. Working for 1/2 to 1 hour is usually sufficient, and temperatures of 60 DEG C. and 85 DEG C. are mentioned. Other ingredients may be incorporated with the polymers during or after the working, and specified optional additions are carbon black, clay, asbestos, blanc fixe, whiting, lithopone, mica, ethanol, benzene, acetone, trichlorethylene, tetrachlorethylene, methyl ethyl ketone, natural or synthetic rubbers, vulcanized vegetable oils, white substitute, dark substitute, "Cumar" (Registered Trade Mark) resin, wood rosin, pitch, stearic acid, paraffin wax, oleic acid, lauric acid, tricresyl phosphate, dibutyl ammonium oleate, dibutyl phthalate, butylphthalyl butyl glycollate, N-alkyl-toluenesulphonamides, pigments, hydroquinone, N : N1-hexamethylene bis - ortho - hydroxybenzamide, and other anti-oxidants customarily used in rubber technology. According to examples: (1) a polyester-amide, prepared from ethylene glycol, adipic acid and ethanolamine, and modified by treatment with hexamethylene di-isocyanate, is compounded with hydroquinone and milled for 40 mins. at or below 60 DEG C.; (2) a polyester-amide, prepared from ethylene glycol and hexamethylene diammonium adipate, and modified by treatment with hexamethylene di-isocyanate, is compounded with hydroquinone and worked in an internal mixer for 40 mins. at or below 85 DEG C.; (3) a polyester from ethylene glycol and adipic acid, modified with hexamethylene di-isocyanate, is compounded with hydroquinone and worked as in example (1). Specification 553,733 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1445441A GB572738A (en) | 1941-11-10 | 1941-11-10 | Improvements in polymeric materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1445441A GB572738A (en) | 1941-11-10 | 1941-11-10 | Improvements in polymeric materials |
Publications (1)
Publication Number | Publication Date |
---|---|
GB572738A true GB572738A (en) | 1945-10-22 |
Family
ID=10041466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1445441A Expired GB572738A (en) | 1941-11-10 | 1941-11-10 | Improvements in polymeric materials |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB572738A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1120129B (en) * | 1957-09-06 | 1961-12-21 | Ici Ltd | Process for the production of elastomers containing urethane groups |
US5543899A (en) * | 1993-04-28 | 1996-08-06 | Canon Kabushiki Kaisha | Charging member having a foamed layer of a material with specified density and pore properties, charging device, process cartridge and image forming apparatus featuring the charging member |
-
1941
- 1941-11-10 GB GB1445441A patent/GB572738A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1120129B (en) * | 1957-09-06 | 1961-12-21 | Ici Ltd | Process for the production of elastomers containing urethane groups |
US5543899A (en) * | 1993-04-28 | 1996-08-06 | Canon Kabushiki Kaisha | Charging member having a foamed layer of a material with specified density and pore properties, charging device, process cartridge and image forming apparatus featuring the charging member |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2448565A (en) | Dimethyl silicone elastomers and method of preparing the same | |
GB573811A (en) | Manufacture of vulcanised materials | |
US2359122A (en) | Process for reclaiming scrap containing vulcanized copolymers of butadiene-1,3 and compounds copolymerizable therewith | |
US2234545A (en) | Manufacture of vulcanized, modified fatty oils | |
GB580524A (en) | Treatment of polymeric materials | |
GB572738A (en) | Improvements in polymeric materials | |
US3238164A (en) | Tall oil pitch-c1-c18 monohydric alcohol compositions and use thereof in rubber | |
US2343558A (en) | Process of reclaiming waste polychloroprenes | |
US2315850A (en) | Manufacture of rubber | |
US2384443A (en) | Plastic composition and method of preparing same | |
DE1241605B (en) | Red pigmentation of polymers and plastic natural substances | |
US2402909A (en) | Compounding of buna s with blown oils | |
US2111427A (en) | Rubberlike product and method of making | |
US2460600A (en) | Amino alcohols as softeners in butadiene-styrene copolymers | |
US2585053A (en) | Solid esteks and method of making | |
US2413281A (en) | Sulfur-treated varnish bases | |
US2381720A (en) | Rubberlike compositions | |
US2208305A (en) | Rubberlike product | |
US1751724A (en) | Manufacture of alpha solid resin from the semifluid resinous matter extracted from crude gutta-percha and/or balata | |
US2390446A (en) | Vulcanizates of furylethylene polymers | |
US2540651A (en) | Compounding vulcanizable elastomers employing bitumen softeners and resultant vulcanizates | |
US2625526A (en) | Polyvinylchloride-dienenitrilepolyester composition | |
US1978839A (en) | Composition of matter and method of making same | |
US2426165A (en) | Vulcanizate of copolymer of butadiene and styrene having dispersed therein paracoumarone resin and filler | |
US2537036A (en) | Rubbery copolymer compositions |