FR2111225A5 - Vulcanising synthetic elastomers - by partly vulcanising and then simultaneously drawing and completing vulcanisation - Google Patents
Vulcanising synthetic elastomers - by partly vulcanising and then simultaneously drawing and completing vulcanisationInfo
- Publication number
- FR2111225A5 FR2111225A5 FR7136475A FR7136475A FR2111225A5 FR 2111225 A5 FR2111225 A5 FR 2111225A5 FR 7136475 A FR7136475 A FR 7136475A FR 7136475 A FR7136475 A FR 7136475A FR 2111225 A5 FR2111225 A5 FR 2111225A5
- Authority
- FR
- France
- Prior art keywords
- elongation
- vulcanisation
- vulcanising
- break
- partly
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/244—Stepwise homogeneous crosslinking of one polymer with one crosslinking system, e.g. partial curing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2321/00—Characterised by the use of unspecified rubbers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Vulcanisation of mixts. of synthetic elastomers, vulcanising agents, and the usual additives, is effected by (a) partly vulcanising the mixt. at temps. and/or for periods less than those for complete vulcanisation to give pdts. having an elongation at break of 300-2000%, and a residual elongation 70% of their elongation at break, and (b) drawing the pdt. at a draw ratio corresponding to an elongation the percentage less than 10% of the elongation at break, and at the same time terminating the vulcanisation at a temp. equal to or different from that of stage (a) the elongation characteristics indicated for stage (a) being those existing at the temp. at which vulcanisation is terminated. Gives vulcanised pdts. e.g. sheets, threads, fibres, inner tubes, with a high tensile strength, low modulus of elasticity, and low residual elongation. Specif., the synthetic elastomer is an ethylene-propylene copolymer, EPDM terpolymer, styrene-butadiene copolymer, acrylonitrile-butadiene copolymer of chlorosulphonated polyethylene.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT3097570 | 1970-10-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2111225A5 true FR2111225A5 (en) | 1972-06-02 |
Family
ID=11232880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7136475A Expired FR2111225A5 (en) | 1970-10-14 | 1971-10-11 | Vulcanising synthetic elastomers - by partly vulcanising and then simultaneously drawing and completing vulcanisation |
Country Status (6)
Country | Link |
---|---|
AU (1) | AU3446171A (en) |
BE (1) | BE773881A (en) |
DE (1) | DE2150752A1 (en) |
ES (1) | ES395955A1 (en) |
FR (1) | FR2111225A5 (en) |
NL (1) | NL7113844A (en) |
-
1971
- 1971-10-08 NL NL7113844A patent/NL7113844A/xx unknown
- 1971-10-11 FR FR7136475A patent/FR2111225A5/en not_active Expired
- 1971-10-11 AU AU34461/71A patent/AU3446171A/en not_active Expired
- 1971-10-12 DE DE19712150752 patent/DE2150752A1/en active Pending
- 1971-10-13 ES ES395955A patent/ES395955A1/en not_active Expired
- 1971-10-13 BE BE773881A patent/BE773881A/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU3446171A (en) | 1973-04-19 |
ES395955A1 (en) | 1973-12-16 |
BE773881A (en) | 1972-04-13 |
NL7113844A (en) | 1972-04-18 |
DE2150752A1 (en) | 1972-04-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |