Composition including addition condensation product of aromatic compound and carbonyl compound and thiol compound, method for producing composition, scale adhesion prevention agent, reaction apparatus, polymer, and method for producing polymer

Patent metadata

Field	Value
Publication number	US-2025019563-A1
Application number	US-202418764158-A
Country	US
Kind code	A1
Filing date	Jul 4, 2024
Priority date	Jul 7, 2023
Publication date	Jan 16, 2025
Grant date	—

Abstract

A composition includes an addition condensation product of an aromatic compound and a carbonyl compound, and a thiol compound. The composition described above includes, for example, 0.01 parts by mass or more and 100 parts by mass or less of a thiol compound per 100 parts by mass of an aromatic compound. In the compositions described above, the addition condensation product may include a first type of addition condensation product having a first average molecular weight and a second type of addition condensation product having a second average molecular weight. In the composition described above, the first average molecular weight and the second average molecular weight are different from each other.

First claim

What is claimed is:

1 . A composition comprising:
an addition condensation product of an aromatic compound and a carbonyl compound; and a thiol compound.

2 . The composition according to claim 1 , wherein the composition includes 0.01 parts by mass or more and 100 parts by mass or less of the thiol compound per 100 parts by mass of the aromatic compound.

3 . The composition according to claim 1 , wherein the addition condensation product includes:
a first type of addition condensation product having a first average molecular weight; and a second type of addition condensation product having a second average molecular weight, and the first average molecular weight and the second average molecular weight are different from each other.

4 . The composition according to claim 3 , wherein a ratio of a mass of the second type of addition condensation product to a mass of the first type of addition condensation product is 2.3 to 1000, and
the second average molecular weight is greater than the first average molecular weight.

5 . The composition according to claim 1 , wherein the thiol compound includes:
a thiol group; and at least one functional group selected from a group consisting of a hydroxyl group, an amino group, and a carboxyl group.

6 . The composition according to claim 1 , wherein the thiol compound is thioglycerol, thioglycol, or derivatives thereof.

7 . The composition according to claim 1 , wherein the aromatic compound is naphthols.

8 . The composition according to claim 1 , wherein the carbonyl compound is an aldehyde compound, a ketone compound, or derivatives thereof.

9 . The composition according to claim 1 , wherein the aromatic compound is 1-naphthol,
the carbonyl compound is formaldehyde, and the thiol compound is 1-thioglycerol or thioglycol.

10 . The composition according to claim 1 , wherein the thiol compound is not a thiourea tautomer.

11 . A scale adhesion prevention agent for preventing adhesion of scale including a polymer, comprising:
the composition according to claim 1 .

12 . A scale adhesion prevention agent for preventing adhesion of scale including a polymer, comprising:
the composition according to claim 2 .

13 . A method for producing the composition according to claim 1 , comprising:
preparing a mixture of a solvent, an aromatic compound, a carbonyl compound, and a thiol compound; and producing a composition comprising an addition condensation product of the aromatic compound and the carbonyl compound, and the thiol compound by causing the aromatic compound and the carbonyl compound included in the mixture to react in a presence of a catalyst and a surfactant.

14 . The method for producing the composition according to claim 13 , wherein
the catalyst is alkali metal hydroxide, and the surfactant is an anionic surfactant.

15 . The method for producing the composition according to claim 13 , wherein the thiol compound is not a thiourea tautomer.

16 . A scale adhesion prevention layer formed of the composition according to claim 1 on an internal structure surface of a reactor included in a reaction apparatus for polymerization of monomers.

17 . A reaction apparatus comprising a reactor having an internal structure in which the scale adhesion prevention layer according to claim 16 is formed on a surface.

18 . A reaction apparatus for polymerization of monomers, comprising a reactor configured to be able to store solution including the monomers, wherein
the reactor includes a covering layer arranged on at least part of an inner wall surface that is a surface on a side contacting the solution, the covering layer includes an addition condensation product of an aromatic compound and a carbonyl compound, the addition condensation product includes: a first type of addition condensation product having a first average molecular weight; and a second type of addition condensation product having a second average molecular weight; the second average molecular weight is greater than the first average molecular weight, and a ratio of a mass of the second type of addition condensation product to a mass of the first type of addition condensation product is 0.75 to 1000.

19 . A method for producing a polymer, comprising:
preparing the reaction apparatus according to claim 18 ; charging a solution including monomers inside a reactor of the reaction apparatus; starting a polymerization reaction of the monomers inside the reactor; and terminating a polymerization reaction of the monomers inside the reactor.

20 . A particulate polymer, wherein
a number of foreign objects with a major axis of 250 μm or more included per 200 cm 3 of the polymer that is measured according to JIS K 6737 is two or more and four or less, and a content of an addition condensation product of an aromatic compound and a carbonyl compound in the foreign object is 1% by mass or more.

Assignees

• Shinetsu Chemical Co

Inventors

• Tsuchiya Yoshikatsu
• Usuki Masahiro

Classifications

• B01J19/02

  Apparatus characterised by being constructed of material selected for its chemically-resistant properties · CPC title

• C09D161/00 Primary

  Coating compositions based on condensation polymers of aldehydes or ketones (with polyalcohols C09D159/00; with polynitriles C09D177/00); Coating compositions based on derivatives of such polymers · CPC title

• C09D5/1662

  Synthetic film-forming substance · CPC title

• C08G16/0237 Primary

  containing sulfur · CPC title