IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0565729
(1990-08-13)
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우선권정보 |
DE-3927929 (1989-08-24) |
발명자
/ 주소 |
- Rsseler Wolfgang (Krefeld DEX) Idel Karsten-Josef (Krefeld DEX) Dorf Ernst-Ulrich (Krefeld DEX) Alewelt Wolfgang (Krefeld DEX) Freitag Dieter (Krefeld DEX)
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출원인 / 주소 |
- Bayer Aktiengesellschaft (Leverkusen DEX 03)
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인용정보 |
피인용 횟수 :
10 인용 특허 :
0 |
초록
The invention concerns a process for the manufcture of polyarylene sulphides from alkali sulphide and aromatic dihalogen compounds, whereby the alkali sulphide is produced in situ.
대표청구항
▼
A process for the manufacture of polyarylene sulphides from a) dihalogen-(hetero)aromatic compounds of formulate (I), (II) or (III) [Figure] (I) [Figure] (II) [Figure] (III) wherein X signifies halogen, R1 is hydrogen, C1-C4 alkyl, C5-C10 cycloalkyl, C6-C10 aryl, C7-C14 alkylaryl, C7-C14 arylalkyl,
A process for the manufacture of polyarylene sulphides from a) dihalogen-(hetero)aromatic compounds of formulate (I), (II) or (III) [Figure] (I) [Figure] (II) [Figure] (III) wherein X signifies halogen, R1 is hydrogen, C1-C4 alkyl, C5-C10 cycloalkyl, C6-C10 aryl, C7-C14 alkylaryl, C7-C14 arylalkyl, or two R1 residues together in the ortho position together with the adjacent carbon atoms in the ring form a C5-C14 aromatic residue with or without up to three heteroatoms comprising N, O or S, Q stands for a single bond or -CR12-, -Ar-, -O-, -S-, -NR1-, -C(O)-, -C(O)-Ar-C(O)-, -C(O)-NR1-C(O)-, whereby R1 has the meaning stated above and Ar stands for a C6-C24 aromatic with or without a N, O or S heteroatom, x stands for the numbers 1, 2, 3 or 4, o stands for the numbers 1, 2 or 3, whereby up to 20 mol % of the aromatic dihalogen residues are optionally replaced by C1-C36 aliphatic dihalogen residues or C8-C36 aromatic residues containing at least two aliphatically bound halogens, b) optionally 0.05 to 3 mol %, relative to the sum of a), of tri- or tetrahalogen aromatic residues of formula (IV) ArXn(IV) wherein X stands for halogen, Ar stands for C6-C24 aromatic residue with or without up to 3 carbon atoms replaced by heteroatoms comprising O or S, and n stands for the number 3 or 4, and optionally, 0.05 to 7.5 mol %, relative to the sum of a), of compounds for regulating the molecular weight, c) alkali sulphides prepared in situ from alkali hydroxide and hydrogen sulphide, optionally with alkali hydrogen sulphides, d) in a polar, aprotic organic solvent, characterized in that i) a 1.8 to 2.4 molar amount, relative to the sum of aromatic dihalogen compounds in a), of alkali hydroxide is placed in a reactor with the polar solvent at room temperature and normal pressure or elevated pressure up to 10 bar, and ii) optionally, with simultaneous heating, a 0.9 to 1.2 molar amount, relative to the sum of aromatic dihalogen compounds in a), of gaseous or condensed hydrogen sulphide is introduced, and iii) heated to a temperature of at least 150°C., iv) the aromatic dihalogen compound(s) of a) are added, and v) by azeotropic distillation the pressure of the aromatic dihalogen compounds at a minimum temperature corresponding to the boiling point of the water-containing azeotrope, water is separated in a period of 5-100 minutes, and vi) the temperature is continuously increased to 230°-250°C.
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