WO2012138001A1 - 고무용 산화방지제 및 이를 포함하는 합성고무 - Google Patents
고무용 산화방지제 및 이를 포함하는 합성고무 Download PDFInfo
- Publication number
- WO2012138001A1 WO2012138001A1 PCT/KR2011/002469 KR2011002469W WO2012138001A1 WO 2012138001 A1 WO2012138001 A1 WO 2012138001A1 KR 2011002469 W KR2011002469 W KR 2011002469W WO 2012138001 A1 WO2012138001 A1 WO 2012138001A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rubber
- antioxidant
- styrene
- butadiene
- formula
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
- C07C323/10—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton
- C07C323/11—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
- C07C323/16—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton containing six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/375—Thiols containing six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/56—Ring systems containing bridged rings
- C07C2603/58—Ring systems containing bridged rings containing three rings
- C07C2603/60—Ring systems containing bridged rings containing three rings containing at least one ring with less than six members
- C07C2603/66—Ring systems containing bridged rings containing three rings containing at least one ring with less than six members containing five-membered rings
- C07C2603/68—Dicyclopentadienes; Hydrogenated dicyclopentadienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/005—Stabilisers against oxidation, heat, light, ozone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
Definitions
- the present invention relates to an antioxidant for rubber containing an thio compound which is excellent in heat stability and environmentally friendly, and a synthetic rubber comprising the same.
- Antioxidants of polymers generally used in the prior art may be classified into phenolic, amine, phosphite, and thioester based. Although these antioxidants are used separately or are mixed and used suitably, each of these antioxidants has its own limit. Specifically, phenolic antioxidants have excellent thermal stability at first but are often colored after oxidation, and thus their use is limited.Amine-based antioxidants have excellent performance as antioxidants, but the material itself has color problems. Holding In addition, phosphite-based antioxidants have the disadvantage of hydrolysis due to water and decomposing in vulcanization during rubber synthesis, and thioester-based antioxidants are difficult to show properly when used alone. Performance is achieved when used in conjunction with a formulation.
- BHT' 2,6-di- commonly used in polymers t -Butyl-4-methylphenol
- BHT which is generally applied to polymers, pollutes the environment due to volatility, and thus, companies are demanding BHT-free products in recent years, thus maintaining performance and properties of polymers to prevent oxidation of polymers.
- an antioxidant that is not harmful to the human body and has low volatility is urgently needed.
- BHT substitutes include 1076 (octadecyl-3- (3,5-di- t -butyl-4-hydroxyphenyl) -propionate), 1010 (pentaerythryl-tetrakis [3- (3 , 5-di- t -butyl-4-hydroxyphenyl) -propionate]) and the like, but these are only primary antioxidants and have limitations in performance and physical properties. Therefore, secondary antioxidants must be added separately. There is.
- the present inventors tried to improve the problems of the existing antioxidants, while studying, using the thio compound represented by the following formula (1) as an additive of the rubber, the compound is a primary antioxidant and 2 in one molecule It has all the functions of the primary antioxidant, it can be used alone without the use of a mixture of primary and secondary antioxidants, it can be seen that the thermal stability of the rubber can be maintained even in a smaller amount than the existing antioxidants It was completed.
- R 1 is —CH 2 SR 2
- R 2 is a straight-chain, crushed or cyclic alkyl group having 5 to 16 carbon atoms or an aromatic compound having 6 to 16 carbon atoms
- n is 1 ⁇ It is a real number that satisfies n ⁇ 20.
- an object of the present invention is to provide an antioxidant for rubber containing a thio compound and a synthetic rubber comprising the same.
- the present invention is characterized by an antioxidant for rubber comprising a thio compound represented by the following formula (1);
- R 1 is —CH 2 SR 2
- R 2 is a straight-chain, crushed or cyclic alkyl group having 5 to 16 carbon atoms or an aromatic compound having 6 to 16 carbon atoms
- n is 1 ⁇ It is a real number that satisfies n ⁇ 20.
- the present invention is another feature of a synthetic rubber comprising the antioxidant for rubber.
- the antioxidant for rubber of the present invention can be used not only to see the effect of adding primary and secondary antioxidants, but also to maintain the thermal stability of the rubber even when used in a small amount. Low environmentally friendly.
- the present invention relates to a novel rubber antioxidant containing a thio compound represented by the following formula (1) and a synthetic rubber comprising the same.
- R 1 is —CH 2 SR 2
- R 2 is a straight-chain, crushed or cyclic alkyl group having 5 to 16 carbon atoms or an aromatic compound having 6 to 16 carbon atoms
- n is 1 ⁇ It is a real number that satisfies n ⁇ 20.
- the present invention includes the thio compound represented by Chemical Formula 1, preferably, R 1 of Chemical Formula 1 preferably uses a thio compound having 6 to 14 carbon atoms, and more preferably, in Chemical Formula 1 R 2 is preferably used by mixing one or two or more selected from thio compounds having 8 carbon atoms, 10 carbon atoms and 12 carbon atoms.
- the antioxidant for rubber of the present invention is a butadiene polymer, styrene-butadiene copolymer, random styrene-butadiene copolymer, styrene-butadiene-styrene block copolymer, styrene-butadiene block copolymer and styrene-butadiene-styrene-butadiene 0.01 to 5 parts by weight, preferably 0.05 to 3 parts by weight, and more preferably 0.1 to 2 parts by weight, based on 100 parts by weight of the synthetic rubber containing one or two or more selected from the multiblock copolymers. .
- the rubber antioxidant in less than 0.01 parts by weight based on 100 parts by weight of the synthetic rubber can not see the thermal stability effect due to the antioxidant, when used in excess of 5 parts by weight is used within the above range It is desirable to.
- the rubber containing the antioxidant is very excellent in thermal stability at a high temperature of 100 °C or more, the antioxidant has a high molecular weight and low volatility, it is possible to manufacture an environmentally friendly rubber.
- the alkylation compound (1 equivalent) prepared in Synthesis Example 1 was dissolved in the same amount of toluene, and paraformaldehyde (2 equivalents), octyl mercaptan (2 equivalents), and dimethylamine (0.2 equivalents) in 50% concentration. ) Aqueous solution was added and then reacted at 100 ° C. for 3 hours. Next, the organic layer separated from the reaction product was concentrated under reduced pressure to prepare a concentrated light brown liquid thio compound (Formula 1-1), and the results are shown in Table 1 below.
- Synthetic rubber was prepared by adding a thio compound prepared in Preparation Example 1 to 100 parts by weight of butadiene rubber (trade name: Kumho KBR 01, raw Mooney viscosity 45, cis content of 94% or more) prepared according to a conventional method.
- Synthetic rubber was prepared in the same manner as in Example 1, but instead of butadiene rubber, styrene-butadiene rubber (trade name: Kumho 1502, raw Mooney viscosity 52, styrene content 23.5%) to have a composition as shown in Table 2 below was prepared.
- Synthetic rubber was prepared in the same manner as in Example 1, except that the thio compound prepared in Preparation Example 2 was used instead of the thio compound prepared in Preparation Example 1.
- Synthetic rubber was prepared in the same manner as in Example 2, except that the thio compound prepared in Preparation Example 2 was used instead of the thio compound prepared in Preparation Example 1.
- Synthetic rubber was prepared in the same manner as in Example 1, but synthetic rubber was prepared using the thio compound prepared in Preparation Example 3 instead of the thio compound prepared in Preparation Example 1.
- Synthetic rubber was prepared in the same manner as in Example 2, except that the thio compound prepared in Preparation Example 3 was used instead of the thio compound prepared in Preparation Example 1.
- the thio compound according to the present invention is to increase the molecular weight using a dicyclopentadiene, thereby solving the volatility problem and existing as an antioxidant having the function of both primary and secondary antioxidants Compared with antioxidants BHT and AO 1076 it can be seen that the thermal stability is very excellent even in a small amount.
- Such an antioxidant for rubber of the present invention is suitable for use in synthetic rubber, and since the synthetic rubber has excellent heat resistance and physical properties, it can be applied to plastic modifiers, particularly impact-resistant polystyrene resins, polystyrene sheets, tires, and hot melt adhesives.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims (4)
- 제 1 항에 있어서, 상기 화학식 1에서 R2는 탄소수가 8개, 탄소수 10개 및 탄소수 12개인 티오 화합물 중에서 선택된 1종 또는 2종 이상인 것을 특징으로 하는 고무용 산화방지제.
- 고무 100 중량부에 대하여, 청구항 1 또는 청구항 2의 고무용 산화방지제가 0.01 ~ 5 중량부 포함되는 것을 특징으로 하는 합성고무.
- 제 3 항에 있어서, 상기 고무는 부타디엔 중합체, 스티렌-부타디엔 공중합체, 랜덤 스티렌-부타디엔 공중합체, 스티렌-부타디엔-스티렌 블록 공중합체, 스티렌-부타디엔 블록 공중합체 및 스티렌-부타디엔-스티렌- 부타디엔 형태의 다중블록 공중합체 중에서 선택 1종 또는 2종 이상인 것을 특징으로 하는 합성고무.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/498,533 US8729169B2 (en) | 2011-04-08 | 2011-04-08 | Synthetic rubber with anti-oxidants for rubber |
PCT/KR2011/002469 WO2012138001A1 (ko) | 2011-04-08 | 2011-04-08 | 고무용 산화방지제 및 이를 포함하는 합성고무 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/KR2011/002469 WO2012138001A1 (ko) | 2011-04-08 | 2011-04-08 | 고무용 산화방지제 및 이를 포함하는 합성고무 |
Publications (1)
Publication Number | Publication Date |
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WO2012138001A1 true WO2012138001A1 (ko) | 2012-10-11 |
Family
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Family Applications (1)
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PCT/KR2011/002469 WO2012138001A1 (ko) | 2011-04-08 | 2011-04-08 | 고무용 산화방지제 및 이를 포함하는 합성고무 |
Country Status (2)
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US (1) | US8729169B2 (ko) |
WO (1) | WO2012138001A1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101173215B1 (ko) * | 2009-09-10 | 2012-08-13 | 금호석유화학 주식회사 | 신규한 티오 화합물 및 이의 제조방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0172941B1 (ko) * | 1989-11-14 | 1999-03-30 | 베르너 발데크 | 탄성중합체용 안정화제 혼합물 |
US20010044518A1 (en) * | 1997-09-29 | 2001-11-22 | Kurt Hoffmann | Dust-free, epoxy-containing stabilizer granules and the preparation process |
KR20110027402A (ko) * | 2009-09-10 | 2011-03-16 | 금호석유화학 주식회사 | 신규한 티오 화합물 및 이의 제조방법 |
-
2011
- 2011-04-08 WO PCT/KR2011/002469 patent/WO2012138001A1/ko active Application Filing
- 2011-04-08 US US13/498,533 patent/US8729169B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0172941B1 (ko) * | 1989-11-14 | 1999-03-30 | 베르너 발데크 | 탄성중합체용 안정화제 혼합물 |
US20010044518A1 (en) * | 1997-09-29 | 2001-11-22 | Kurt Hoffmann | Dust-free, epoxy-containing stabilizer granules and the preparation process |
KR20110027402A (ko) * | 2009-09-10 | 2011-03-16 | 금호석유화학 주식회사 | 신규한 티오 화합물 및 이의 제조방법 |
Also Published As
Publication number | Publication date |
---|---|
US8729169B2 (en) | 2014-05-20 |
US20120270982A1 (en) | 2012-10-25 |
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