Low-cost synthesis method of rosin modified phenolic resin

A technology of rosin modification and phenolic resin, which is applied in the field of synthesis of low-cost rosin modified phenolic resin, can solve the problems of poor quality and high cost, and achieve the effect of good quality, low cost and quality assurance
CN108676136APending Publication Date: 2018-10-19新洲(武平)林化有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
新洲(武平)林化有限公司
Publication Date
2018-10-19
Patent Text Reader

Abstract

The invention discloses a low-cost synthesis method of rosin modified phenolic resin. The low-cost synthesis method comprises the following steps: weighing rosin and heating until the rosin is melted;then adding grade-A phenolic resin prepared by S1; reacting at 230 to 260 DEG C for 6 to 9 h; weighing vegetable oil and heating until the vegetable oil is melted; then adding the vegetable oil intoS2 and reacting at 230 to 260 DEG C for 6 to 9 h; adding polyol into a mixture obtained by S2, wherein the adding amount of the polyol is 4 to 6 percent of the weight of the rosin in S2; carrying outesterification reaction at the temperature of 260 to 340 DEG C, wherein the reaction time is 11 to 20 h; then removing a low-boiling-point small molecular substance in vacuum to obtain the rosin modified phenolic resin. The low-cost synthesis method disclosed by the invention has the advantages of reasonable design, proper method, low cost, good quality and high purity and is suitable for being popularized.
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Description

Technical field

[0001] The invention relates to the technical field of chemical synthesis, in particular to a low-cost rosin-modified phenolic resin synthesis method. Background technique

[0002] Rosin-modified phenolic resin is the best resin currently used in offset printing oils. It is based on alkylphenols (the phenols currently used in offset printing inks include phenol, bisphenol A, and PTBP. Tert-butyl phenol, POP p-tert-octyl phenol, PNP nonyl phenol and PDDP dodecyl phenol), formaldehyde, polyhydric alcohol and rosin are produced by chemical reactions. Due to its unique honeycomb structure characteristics, it has good pigment wetting performance, and at the same time it reacts with an appropriate gelling agent to obtain a certain viscoelastic binder, which is widely used in offset printing inks. Rosin-modified phenolic resin directly affects The gloss, dryness, water resistance, viscosity, rheology and printing performance of printing inks are currently used in offset...

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
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