Novel antioxidant production process for co-production of p-cresol and dicyclopentadiene butylation product and BHT
A technology of dicyclopentadiene and p-cresol is applied in the directions of compositions for inhibiting chemical changes, organic chemistry, organic chemistry methods, etc., and can solve waste, high price, and cost of butylated products of cresol and dicyclopentadiene. The problem of large consumption, etc., to achieve the effect of avoiding waste
Pending Publication Date: 2021-06-11
广东希必达新材料科技有限公司
View PDF5 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The preparation of existing antioxidants in the co-production process generally adopts p-cresol and alkylation reaction to produce p-cresol and dicyclopentadiene butylated products. However, due to the relatively expensive price of p-cresol, The simple production of p-cresol and dicyclopentadiene butylation product costs a lot, and the raw materials have not been fully utilized, resulting in waste
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment
[0020] A novel antioxidant co-production p-cresol and dicyclopentadiene butylated product and BHT production process, the specific steps are as follows:
[0021] 1) In the first alkylation reaction, the raw materials dicyclopentadiene and p-cresol are pumped from the tank area to the calibration tank, and catalyst 1 is put into the alkylation reactor, and p-cresol flows into the alkylation by its own gravity In the reaction kettle, turn on the stirring device of the alkylation reaction kettle, put in steam to raise the temperature of the alkylation reaction kettle to 100°C, at this time, turn on the dicyclopentadiene feed metering pump, and control the dicyclopentadiene by frequency modulation according to the reaction temperature rise. The amount of diene to be added dropwise, dicyclopentadiene and p-cresol are alkylated under stirring until all the materials in the dicyclopentadiene calibration tank are injected, then the temperature is raised to 100°C under the action of cat...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to the technical field of antioxidants, in particular to a novel antioxidant production process for co-production of p-cresol and dicyclopentadiene butylation product and BHT. The process comprises the following specific steps: 1) first alkylation reaction, 2) dissolution, 3) second alkylation reaction, 4) water washing and neutralization by using a sodium carbonate aqueous solution, 5) filtration, 6) decoloration, 7) toluene recovery, 8) separating of the p-cresol and dicyclopentadiene butylation product and BHT, 9) BHT solvent crystallizing, and 10) product treatment. The process not only can co-produce the p-cresol and dicyclopentadiene butylation product, but also can further use the raw materials for co-producing BHT, and thus waste is avoided.
Description
technical field [0001] The invention relates to the technical field of antioxidants, in particular to a novel antioxidant co-production p-cresol and dicyclopentadiene butylated product and a BHT production process. Background technique [0002] Antioxidant is a kind of chemical substance, when it only exists in a small amount in the polymer system, it can delay or inhibit the oxidation process of the polymer, thereby preventing the aging of the polymer and prolonging its service life, which belongs to a weak reduction agent. Polymer materials such as plastics, synthetic fibers, and rubber are prone to thermo-oxidative degradation reactions. The addition of antioxidants can maintain the excellent performance of polymer materials and can be widely used in many fields such as plastics, rubber, and petroleum products. [0003] Antioxidant BHT is an excellent general-purpose phenolic antioxidant. It is non-toxic, non-flammable, non-corrosive, and has good storage stability. It c...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C07C37/11C07C39/06C07C39/17C09K15/08
CPCC07C37/11C09K15/08C07C2603/68C07B2200/13C07C39/06C07C39/17
Inventor 邵洪东黄永东陈雄毅叶蕾汪正浩李宇兰吴炎锋朱国亮林放
Owner 广东希必达新材料科技有限公司