Bisphenol A type sulfonated polysulfone copolymer and synthetic method thereof

A technology of sulfonated polysulfone and a synthesis method, applied in the field of polysulfone copolymer and its synthesis, can solve the problems of easy occurrence of side reactions, difficult control of sulfonation degree of synthetic polysulfone copolymer, etc. Effect

CN101274982AInactive Publication Date: 2008-10-01HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2008-10-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a bisphenol A sulfonated polysulfone copolymer and a synthesis method thereof, which relates to a polysulfone copolymer and a synthesis method. The invention solves the problem that the synthesis by using the existing method has difficulties in controlling the degree of sulphonation of polysulfone copolymer and the side reactions occur easily. The molecular formula of the product of the invention is as the above formula, wherein, n and m represent degree of polymerization. The steps of the method are as follows: A. 4, 4'-dichlorodiphenyl sulfone, sulfonation dichlorodiphenyl sulfone and bisphenol A are dissolved in N-cymene-2- ketopyrrolidine, adding potassium carbonate and toluene; B. under the condition with temperature of 150 to 160 DEG C, toluene is removed after 4-hour refluxing ; the temperature is increased to 190 DEG C and the reaction is incubated for 16 to 35 hours with heat preservation; C. water or N is added and solid is precipitated in the N'-dimethylacetamide; then the precipitated solid is ground and filtered and washed by water; the precipitate is put into boiling deionized water, washed again and dried in vacuum, thus the steps are all finished. The polysulfone copolymer and the synthesis method of the invention effectively control the degree of sulphonation and have no occurrence of the side reactions and the production rate of the product of the invention is over 90 percent.
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Description

technical field

[0001] The invention relates to a polysulfone copolymer and a synthesis method thereof. Background technique

[0002] As an effective method for modifying aromatic ring polymers, sulfonation has been widely used. There are two ways to synthesize sulfonated polysulfone copolymers, which are direct sulfonation of polymers and sulfonation of monomers. At present, most people adopt the method of direct sulfonation of polymers for synthesis. For example, some literatures have reported that polyether ether ketone and polyether sulfone are sulfonated with different sulfonating agents, such as concentrated sulfuric acid, chlorosulfonic acid, etc., and the sulfonation degree per repeat unit can reach 1.0. However, there are still some problems in the existing sulfonated polymers, such as: the reaction will be difficult to control due to the increase of the degree of sulfonation, and more stringent conditions must be adopted in order to obtain a product with a high d...

Examples

specific Embodiment approach 1

[0014] Specific embodiment one: the molecular formula of bisphenol A type sulfonated polysulfone copolymer in this embodiment is as follows:

[0015] molecular

[0016] The n and m in the formula represent the degree of polymerization; it is made of 4,4'-dichlorodiphenyl sulfone (DCDPS), sulfonated dichlorodiphenyl sulfone (SDCDPS) and bisphenol A, where 4,4'- The molar ratio of dichlorodiphenyl sulfone to bisphenol A is 5-9:10, and the molar ratio of sulfonated dichlorodiphenyl sulfone bisphenol A is 1-5:10.

[0017] The molecular formula of sulfonated dichlorodiphenyl sulfone in the present embodiment is

specific Embodiment approach 2

[0018] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the bisphenol A type sulfonated polysulfone copolymer is composed of 4,4'-dichlorodiphenyl sulfone, sulfonated dichlorodiphenyl sulfone and bisphenol A is prepared in a molar ratio of 9:1:10. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Specific embodiment three: the difference between this embodiment and specific embodiment one is that bisphenol A type sulfonated polysulfone copolymer is composed of 4,4'-dichlorodiphenyl sulfone, sulfonated dichlorodiphenyl sulfone and bisphenol A is prepared in a molar ratio of 8:2:10. Others are the same as in the first embodiment.