BR8105125A - Processo para a producao de copolimero de oximetileno de alto peso molecular,na presenca de impurezas - Google Patents
Processo para a producao de copolimero de oximetileno de alto peso molecular,na presenca de impurezasInfo
- Publication number
- BR8105125A BR8105125A BR8105125A BR8105125A BR8105125A BR 8105125 A BR8105125 A BR 8105125A BR 8105125 A BR8105125 A BR 8105125A BR 8105125 A BR8105125 A BR 8105125A BR 8105125 A BR8105125 A BR 8105125A
- Authority
- BR
- Brazil
- Prior art keywords
- impurities
- production
- molecular weight
- high molecular
- oxymethylene copolymer
- Prior art date
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
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/18—Copolymerisation of aldehydes or ketones
-
- 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
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/18—Copolymerisation of aldehydes or ketones
- C08G2/22—Copolymerisation of aldehydes or ketones with epoxy compounds
-
- 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
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/18—Copolymerisation of aldehydes or ketones
- C08G2/24—Copolymerisation of aldehydes or ketones with acetals
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/176,766 US4312977A (en) | 1980-08-11 | 1980-08-11 | Process for the production of high molecular weight oxymethylene copolymer in the presence of impurity |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8105125A true BR8105125A (pt) | 1982-04-27 |
Family
ID=22645729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8105125A BR8105125A (pt) | 1980-08-11 | 1981-08-10 | Processo para a producao de copolimero de oximetileno de alto peso molecular,na presenca de impurezas |
Country Status (5)
Country | Link |
---|---|
US (1) | US4312977A (pt) |
EP (1) | EP0046081A1 (pt) |
JP (1) | JPS5753518A (pt) |
BR (1) | BR8105125A (pt) |
CA (1) | CA1159192A (pt) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0678535B2 (en) † | 1990-10-05 | 2008-04-09 | Asahi Kasei Chemicals Corporation | Process for producing polyoxymethylene copolymer |
US5942595A (en) * | 1997-08-19 | 1999-08-24 | E. I. Du Pont De Nemours And Company | Process for co-polymerization of formaldehyde with cyclic ethers in the presence of organic nitro compounds |
US6072021A (en) * | 1997-10-24 | 2000-06-06 | E. I. Du Pont De Nemours And Company | Copolymerization of formaldehyde and cyclic ethers using initiators based upon tetraphenyl borates |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3027352A (en) * | 1958-02-28 | 1962-03-27 | Celanese Corp | Copolymers |
US3376361A (en) * | 1963-06-24 | 1968-04-02 | Celanese Corp | Formaldehyde block copolymers |
NL6902177A (pt) * | 1968-02-12 | 1969-08-14 | ||
US3661854A (en) * | 1970-02-09 | 1972-05-09 | Du Pont | Method for preparing random copolymers of formaldehyde and olefin oxides and/or vinyl ethers |
US3803094A (en) * | 1972-07-12 | 1974-04-09 | Ube Industries | Process for producing formaldehyde copolymer |
US4087411A (en) * | 1975-09-17 | 1978-05-02 | Mitsubishi Gas Chemical Company, Inc. | Process for preparing oxymethylene polymers |
JPS54161695A (en) * | 1978-06-13 | 1979-12-21 | Mitsubishi Gas Chem Co Inc | Method of mixing polymerizable materials and device therefor |
-
1980
- 1980-08-11 US US06/176,766 patent/US4312977A/en not_active Expired - Lifetime
-
1981
- 1981-07-28 CA CA000382657A patent/CA1159192A/en not_active Expired
- 1981-08-10 EP EP81303640A patent/EP0046081A1/en not_active Withdrawn
- 1981-08-10 BR BR8105125A patent/BR8105125A/pt unknown
- 1981-08-11 JP JP56124845A patent/JPS5753518A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5753518A (en) | 1982-03-30 |
JPH0440368B2 (pt) | 1992-07-02 |
EP0046081A1 (en) | 1982-02-17 |
US4312977A (en) | 1982-01-26 |
CA1159192A (en) | 1983-12-20 |
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