CN101012321A - Fire resistant latex and preparing method thereof - Google Patents
Fire resistant latex and preparing method thereof Download PDFInfo
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- CN101012321A CN101012321A CN 200610037257 CN200610037257A CN101012321A CN 101012321 A CN101012321 A CN 101012321A CN 200610037257 CN200610037257 CN 200610037257 CN 200610037257 A CN200610037257 A CN 200610037257A CN 101012321 A CN101012321 A CN 101012321A
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- concentration
- ammoniacal liquor
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- casein
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- 239000004816 latex Substances 0.000 title claims abstract description 29
- 229920000126 latex Polymers 0.000 title claims abstract description 29
- 230000009970 fire resistant effect Effects 0.000 title claims description 11
- 238000000034 method Methods 0.000 title description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000005018 casein Substances 0.000 claims abstract description 39
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 235000021240 caseins Nutrition 0.000 claims abstract description 39
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 27
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920000642 polymer Polymers 0.000 claims abstract description 15
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims description 33
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 235000013305 food Nutrition 0.000 claims description 25
- 239000005864 Sulphur Substances 0.000 claims description 17
- 239000005083 Zinc sulfide Substances 0.000 claims description 17
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 17
- 229960002447 thiram Drugs 0.000 claims description 17
- RKQOSDAEEGPRER-UHFFFAOYSA-L zinc diethyldithiocarbamate Chemical compound [Zn+2].CCN(CC)C([S-])=S.CCN(CC)C([S-])=S RKQOSDAEEGPRER-UHFFFAOYSA-L 0.000 claims description 17
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 17
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- OIRDTQYFTABQOQ-KQYNXXCUSA-N adenosine Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](CO)[C@@H](O)[C@H]1O OIRDTQYFTABQOQ-KQYNXXCUSA-N 0.000 claims description 12
- 239000000839 emulsion Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 9
- 230000003712 anti-aging effect Effects 0.000 claims description 7
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 claims description 6
- 239000002126 C01EB10 - Adenosine Substances 0.000 claims description 6
- 229960005305 adenosine Drugs 0.000 claims description 6
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 238000005987 sulfurization reaction Methods 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 235000014692 zinc oxide Nutrition 0.000 claims description 2
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- WDTHONXSRXXABD-UHFFFAOYSA-N CCC([S-])=[S+]CC.CCC([S-])=[S+]CC.[Zn+2] Chemical compound CCC([S-])=[S+]CC.CCC([S-])=[S+]CC.[Zn+2] WDTHONXSRXXABD-UHFFFAOYSA-N 0.000 abstract 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 235000013312 flour Nutrition 0.000 abstract 1
- 229910052717 sulfur Inorganic materials 0.000 abstract 1
- 239000011593 sulfur Substances 0.000 abstract 1
- 125000003698 tetramethyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 7
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 238000000071 blow moulding Methods 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses thermostable latex (150 deg.c), which comprises the following parts: 80% natural latex, 1% casein, 0.1% ammonia, 2.9% zinc oxide, 4.75% thiourea, 4.75% lithopone, 0.2% sulfur flour, 4.3% disulfidethiram tetramethyl, 1% zinc diethyldithiocarbanate and 1% 2, 2, 4-trimethyl-1, 2-dihydro quinoline polymer.
Description
Technical field,
The invention of this reality relates to a kind of fire resistant latex and preparation method thereof.
Background technology
At present, the moulding skilled worker of known carbon fiber bicycle pipe fitting skill is by a kind of technology that is similar to blow molding, during blow molding temperature be 150 degrees centigrade.The carbon fibre initial rinse material package is tied up outside the nylon airbag, placed the inner chamber of mould, fill high pressure gas again in the nylon airbag, be aided with mold heated and make product with the consistent moulding of dies cavity.But this traditional moulding process is unfavorable for manufacturing the pipe fitting of moulding complexity, because of nylon airbag softness can't obtain the model consistent with product-forming when making the pre-type body of pipe fitting, and causing the defective of carbon fiber composite wood---folding line, wrinkle even mechanical property lost efficacy.
The inventor has developed a kind of latex airbag model, comprises the latex airbag, mandrel, and described mandrel structure, moulding and the structure of waiting to make carbon fiber product, moulding are identical, and size is dwindled, and mandrel is nested with the latex airbag outward, and latex airbag and mandrel structure, moulding are consistent.Since during blow molding temperature be 150 degrees centigrade, generic latex can't reach requirement.
Summary of the invention
The objective of the invention is in order to solve above-mentioned the deficiencies in the prior art, and a kind of fire resistant latex of ability 150 celsius temperatures is provided.
Another purpose of purpose of the present invention provides the preparation method of above-mentioned a kind of fire resistant latex.
Technical scheme of the present invention is: a kind of fire resistant latex, contain natural emulsion, casein, ammoniacal liquor, zinc oxide, thiocarbamide, zinc sulfide white, SULPHUR POWDER, tetramethyl-thiuram disulfide, zinc diethyldithiocarbamate, it is characterized in that also containing 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer, above each component is by weight: natural emulsion 80%, casein 1%, ammoniacal liquor 0.1%, zinc oxide 2.9%, thiocarbamide 4.75%, zinc sulfide white 4.75% (lithopone) SULPHUR POWDER 0.2%, tetramethyl-thiuram disulfide 4.3%, zinc diethyldithiocarbamate 1%, 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer 1%.
Above-mentioned fire resistant latex the preparation method, comprise the following steps:
(1) preparation of casein food grade
Add 40 ℃ of warm water of 50% in the container; 10% casein food grade makes its abundant swelling; Add 39% water and 1% concentration again and be 28% ammoniacal liquor, made it become uniform solution in 40 minutes 65 ℃ of following heated and stirred, standby.
(2) preparation of zinc oxide
The first water of adding 29% in the container; Adding 20% concentration is that 10% casein food grade solution and 1% concentration are 10% ammoniacal liquor; The Zinc oxide powder of adding 50% stirred 3 hours.
(3) preparation of tetramethyl-thiuram disulfide
Add earlier 50% water in the container, add 8% concentration and be 10% casein food grade solution and 8% concentration and be 10% ammoniacal liquor, add 34% tetramethyl-thiuram disulfide powder, stirrer stirring 3 hours.
(4) heat-resisting anti-aging agent preparation
Add 28% water in the container, 20% concentration is 10% casein food grade, 2% concentration is 10% ammoniacal liquor, add 16.7% again and grind to form 2,2 of fine powder, 4-trimethylammonium-1,2-dihyaroquinoline polymer, 16.7% 2-mercaptobenzimidazole, 5 '-dehydrogenation adenosine cobalami of 16.6% adds together, powder is stirred evenly again stirred 10 hours with stirrer earlier.
(5) zinc diethyldithiocarbamate preparation
The water of adding 41% in container, 7% dried concentration is 10% casein, and 2% concentration is 10% ammoniacal liquor, adds 50% zinc diethyldithiocarbamate powder, and stirrer stirred 3 hours.
(6) SULPHUR POWDER preparation
Adorn 50% SULPHUR POWDER in container, add 29% water more inward, 20% concentration is 10% casein food grade, and 1% concentration is 10% ammoniacal liquor, with stirring 15 minutes.
(7) thiocarbamide preparation
Add 78% water in container, 10% concentration is 10% casein food grade, and 2% concentration is 10% ammoniacal liquor, and 10% thiocarbamide is smashed the thiocarbamide crystal and stir to pieces and gets final product.
(8) preparation of zinc sulfide white
The water of adding 29% in container, 20% concentration is 10% casein food grade, 1% concentration is 10% ammoniacal liquor, 50% zinc sulfide white, stirrer stirred 1 hour.
(9) preparation of latex
With above (1)---the various dispersion agents that (8) step makes add in the natural emulsion in proportion, order is stablizer (casein), vulcanizing agent, promotor (tetramethyl-thiuram disulfide), zinc diethyldithiocarbamate, SULPHUR POWDER, thiocarbamide, heat-resisting anti-aging agent, weighting agent 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer 2-mercaptobenzimidazole 5 '-dehydrogenation adenosine cobalami, zinc sulfide white; Ratio is natural emulsion 80%, casein 1%, ammoniacal liquor 0.1%, zinc oxide 2.9%, thiocarbamide 4.75%, zinc sulfide white 4.75%, SULPHUR POWDER 0.2%, tetramethyl-thiuram disulfide 4.3%, zinc diethyldithiocarbamate 1%, 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer 1%.At the uniform velocity stirred 5 minutes.
(10) latex sulfuration
Left standstill 12 hours after the latex of working good sealed.
The present invention compares with existing latex owing to the heat-resisting anti-aging agent that contains aforementioned proportion has resistant to elevated temperatures advantage, utilizes latex of the present invention to make latex airbag model, the processing condition when meeting the blow molding of carbon fiber bicycle pipe fitting.
Concrete case study on implementation
Provide case study on implementation of the present invention below, and the present invention is further described:
One, fire resistant latex
Natural emulsion 80% casein 1% ammoniacal liquor 0.1%
Zinc oxide 2.9% thiocarbamide 4.75% zinc sulfide white 4.75%
SULPHUR POWDER 0.2% tetramethyl-thiuram disulfide 4.3% zinc diethyldithiocarbamate 1%
2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer 1%
Two, fire resistant latex the preparation method, comprise the following steps:
(1) preparation of casein food grade
Add 40 ℃ of warm water of 50% in the container; 10% casein food grade makes its abundant swelling; Add 39% water and 1% concentration again and be 28% ammoniacal liquor, made it become uniform solution in 40 minutes 65 ℃ of following heated and stirred, standby.
(2) preparation of zinc oxide
The first water of adding 29% in the container; Adding 20% concentration is that 10% casein food grade solution and 1% concentration are 10% ammoniacal liquor; The Zinc oxide powder of adding 50% stirred 3 hours.
(3) preparation of tetramethyl-thiuram disulfide
Add earlier 50% water in the container, add 8% concentration and be 10% casein food grade solution and 8% concentration and be 10% ammoniacal liquor, add 34% tetramethyl-thiuram disulfide powder, stirrer stirring 3 hours.
(4) heat-resisting anti-aging agent preparation
Add 28% water in the container, 20% concentration is 10% casein food grade, 2% concentration is 10% ammoniacal liquor, add 16.7% again and grind to form 2,2 of fine powder, 4-trimethylammonium-1,2-dihyaroquinoline polymer, 16.7% 2-mercaptobenzimidazole, 5 '-dehydrogenation adenosine cobalami of 16.6% adds together, powder is stirred evenly again stirred 10 hours with stirrer earlier.
(5) zinc diethyldithiocarbamate preparation
The water of adding 41% in container, 7% dried concentration is 10% casein, and 2% concentration is 10% ammoniacal liquor, adds 50% zinc diethyldithiocarbamate powder, and stirrer stirred 3 hours.
(6) SULPHUR POWDER preparation
Adorn 50% SULPHUR POWDER in container, add 29% water more inward, 20% concentration is 10% casein food grade, and 1% concentration is 10% ammoniacal liquor, with stirring 15 minutes.
(7) thiocarbamide preparation
Add 78% water in container, 10% concentration is 10% casein food grade, and 2% concentration is 10% ammoniacal liquor, and 10% thiocarbamide is smashed the thiocarbamide crystal and stir to pieces and gets final product.
(8) preparation of zinc sulfide white
The water of adding 29% in container, 20% concentration is 10% casein food grade, 1% concentration is 10% ammoniacal liquor, 50% zinc sulfide white, stirrer stirred 1 hour.
(9) preparation of latex
With above (1)---the various dispersion agents that (8) step makes add in the natural emulsion in proportion, order is stablizer (casein food grade), vulcanizing agent, promotor (tetramethyl-thiuram disulfide), zinc diethyldithiocarbamate, SULPHUR POWDER, thiocarbamide, heat-resisting anti-aging agent, weighting agent 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer 2-mercaptobenzimidazole 5 '-dehydrogenation adenosine cobalami, zinc sulfide white; Ratio is natural emulsion 80%, casein 1%, ammoniacal liquor 0.1%, zinc oxide 2.9%, thiocarbamide 4.75%, zinc sulfide white 4.75%, SULPHUR POWDER 0.2%, tetramethyl-thiuram disulfide 4.3%, zinc diethyldithiocarbamate 1%, 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer 1%.At the uniform velocity stirred 5 minutes.
(10) latex sulfuration
Left standstill 12 hours after the latex of working good sealed.
Claims (2)
1, a kind of fire resistant latex, contain natural emulsion, casein, ammoniacal liquor, zinc oxide, thiocarbamide, zinc sulfide white, SULPHUR POWDER, tetramethyl-thiuram disulfide, zinc diethyldithiocarbamate, it is characterized in that also containing 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer, above each component is by weight: natural emulsion 80%, casein 1%, ammoniacal liquor 0.1%, zinc oxide 2.9%, thiocarbamide 4.75%, zinc sulfide white 4.75%, SULPHUR POWDER 0.2%, tetramethyl-thiuram disulfide 4.3%, zinc diethyldithiocarbamate 1%, 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer 1%.
2, a kind of fire resistant latex according to claim 1 the preparation method, comprise the following steps:
(1) preparation of casein food grade
Add 40 ℃ of warm water of 50% in the container; 10% casein food grade makes its abundant swelling; Add 39% water and 1% concentration again and be 28% ammoniacal liquor, made it become uniform solution in 40 minutes 65 ℃ of following heated and stirred, standby.
(2) preparation of zinc oxide
The first water of adding 29% in the container; Adding 20% concentration is that 10% casein food grade solution and 1% concentration are 10% ammoniacal liquor; The Zinc oxide powder of adding 50% stirred 3 hours.
(3) preparation of tetramethyl-thiuram disulfide
Add earlier 50% water in the container, add 8% concentration and be 10% casein food grade solution and 8% concentration and be 10% ammoniacal liquor, add 34% tetramethyl-thiuram disulfide powder, stirrer stirring 3 hours.
(4) heat-resisting anti-aging agent preparation
Add 28% water in the container, 20% concentration is 10% casein food grade, 2% concentration is 10% ammoniacal liquor, add 16.7% again and grind to form 2,2 of fine powder, 4-trimethylammonium-1,2-dihyaroquinoline polymer, 16.7% 2-mercaptobenzimidazole, 5 '-dehydrogenation adenosine cobalami of 16.6% adds together, powder is stirred evenly again stirred 10 hours with stirrer earlier.
(5) zinc diethyldithiocarbamate preparation
The water of adding 41% in container, 7% dried concentration is 10% casein, and 2% concentration is 10% ammoniacal liquor, adds 50% zinc diethyldithiocarbamate powder, and stirrer stirred 3 hours.
(6) SULPHUR POWDER preparation
Adorn 50% SULPHUR POWDER in container, add 29% water more inward, 20% concentration is 10% casein food grade, and 1% concentration is 10% ammoniacal liquor, with stirring 15 minutes.
(7) thiocarbamide preparation
Add 78% water in container, 10% concentration is 10% casein food grade, and 2% concentration is 10% ammoniacal liquor, and 10% thiocarbamide is smashed the thiocarbamide crystal and stir to pieces and gets final product.
(8) preparation of zinc sulfide white
The water of adding 29% in container, 20% concentration is 10% casein food grade, 1% concentration is 10% ammoniacal liquor, 50% zinc sulfide white, stirrer stirred 1 hour.
(9) preparation of latex
The various dispersion agents that above (1)-(8) step is made add in the natural emulsion in proportion, order is stablizer (casein), vulcanizing agent, promotor (tetramethyl-thiuram disulfide), zinc diethyldithiocarbamate, SULPHUR POWDER, thiocarbamide, heat-resisting anti-aging agent, weighting agent 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer 2-mercaptobenzimidazole 5 '-dehydrogenation adenosine cobalami, zinc sulfide white; Ratio is natural emulsion 80%, casein 1%, ammoniacal liquor 0.1%, zinc oxide 2.9%, thiocarbamide 4.75%, zinc sulfide white 4.75%, SULPHUR POWDER 0.2%, tetramethyl-thiuram disulfide 4.3%, zinc diethyldithiocarbamate 1%, 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer 1%.At the uniform velocity stirred 5 minutes.
(10) latex sulfuration
Left standstill 12 hours after the latex of working good sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610037257 CN101012321A (en) | 2006-08-25 | 2006-08-25 | Fire resistant latex and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610037257 CN101012321A (en) | 2006-08-25 | 2006-08-25 | Fire resistant latex and preparing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101012321A true CN101012321A (en) | 2007-08-08 |
Family
ID=38700057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610037257 Pending CN101012321A (en) | 2006-08-25 | 2006-08-25 | Fire resistant latex and preparing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101012321A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346092A (en) * | 2015-12-03 | 2016-02-24 | 贾晓静 | Production process of latex liner |
| CN108484993A (en) * | 2018-04-04 | 2018-09-04 | 李海锋 | Silk latex quilt and preparation method thereof |
| CN108546419A (en) * | 2018-03-28 | 2018-09-18 | 安徽天源乳胶技术有限公司 | A kind of production method of high temperature resistant gum cover |
-
2006
- 2006-08-25 CN CN 200610037257 patent/CN101012321A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346092A (en) * | 2015-12-03 | 2016-02-24 | 贾晓静 | Production process of latex liner |
| CN108546419A (en) * | 2018-03-28 | 2018-09-18 | 安徽天源乳胶技术有限公司 | A kind of production method of high temperature resistant gum cover |
| CN108484993A (en) * | 2018-04-04 | 2018-09-04 | 李海锋 | Silk latex quilt and preparation method thereof |
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Effective date of registration: 20071221 Address after: Guangdong city of Dongguan Province Huang Zhen Qing Long Lu long Tian and Private Industrial Park Post encoding: 523753 Applicant after: Chin-Sung Chen Co-applicant after: Dongguan Taihe Composite Material Co., Ltd. Address before: Guangdong city of Dongguan Province Huang Zhen Qing Long Lu long Tian and Private Industrial Park Post encoding: 523753 Applicant before: Chen Jinsong |
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