CN107722634B - 一种低密度硅橡胶及其制备方法 - Google Patents
一种低密度硅橡胶及其制备方法 Download PDFInfo
- Publication number
- CN107722634B CN107722634B CN201710885259.2A CN201710885259A CN107722634B CN 107722634 B CN107722634 B CN 107722634B CN 201710885259 A CN201710885259 A CN 201710885259A CN 107722634 B CN107722634 B CN 107722634B
- Authority
- CN
- China
- Prior art keywords
- low
- silicone rubber
- parts
- density
- side chain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 43
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 238000005187 foaming Methods 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 8
- -1 polysiloxane Polymers 0.000 claims description 43
- 229920002554 vinyl polymer Polymers 0.000 claims description 34
- 229920001296 polysiloxane Polymers 0.000 claims description 31
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 29
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims description 21
- 239000001257 hydrogen Substances 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 229920002545 silicone oil Polymers 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 13
- VMAWODUEPLAHOE-UHFFFAOYSA-N 2,4,6,8-tetrakis(ethenyl)-2,4,6,8-tetramethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane Chemical compound C=C[Si]1(C)O[Si](C)(C=C)O[Si](C)(C=C)O[Si](C)(C=C)O1 VMAWODUEPLAHOE-UHFFFAOYSA-N 0.000 claims description 12
- 229910052697 platinum Inorganic materials 0.000 claims description 11
- 239000004088 foaming agent Substances 0.000 claims description 10
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 10
- 239000002683 reaction inhibitor Substances 0.000 claims description 10
- 239000012763 reinforcing filler Substances 0.000 claims description 8
- 238000007142 ring opening reaction Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 150000007529 inorganic bases Chemical class 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical compound C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 claims description 3
- 229910021485 fumed silica Inorganic materials 0.000 claims description 3
- KSLSOBUAIFEGLT-UHFFFAOYSA-N 2-phenylbut-3-yn-2-ol Chemical compound C#CC(O)(C)C1=CC=CC=C1 KSLSOBUAIFEGLT-UHFFFAOYSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 2
- ZPOLOEWJWXZUSP-WAYWQWQTSA-N bis(prop-2-enyl) (z)-but-2-enedioate Chemical compound C=CCOC(=O)\C=C/C(=O)OCC=C ZPOLOEWJWXZUSP-WAYWQWQTSA-N 0.000 claims description 2
- 235000019437 butane-1,3-diol Nutrition 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- IEPRKVQEAMIZSS-AATRIKPKSA-N diethyl fumarate Chemical compound CCOC(=O)\C=C\C(=O)OCC IEPRKVQEAMIZSS-AATRIKPKSA-N 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- 230000000415 inactivating effect Effects 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 229910000077 silane Inorganic materials 0.000 claims description 2
- 239000000600 sorbitol Substances 0.000 claims description 2
- 238000004073 vulcanization Methods 0.000 abstract description 8
- 238000003756 stirring Methods 0.000 description 27
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 17
- 239000010703 silicon Substances 0.000 description 17
- 229910052710 silicon Inorganic materials 0.000 description 17
- 239000000463 material Substances 0.000 description 15
- 239000006260 foam Substances 0.000 description 13
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 8
- 229920001971 elastomer Polymers 0.000 description 8
- 239000005060 rubber Substances 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 239000006229 carbon black Substances 0.000 description 5
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical group [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- ZOXYLHRVLPYKPZ-UHFFFAOYSA-N [Pt]C=C Chemical compound [Pt]C=C ZOXYLHRVLPYKPZ-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000006459 hydrosilylation reaction Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000006356 dehydrogenation reaction Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710885259.2A CN107722634B (zh) | 2017-09-26 | 2017-09-26 | 一种低密度硅橡胶及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710885259.2A CN107722634B (zh) | 2017-09-26 | 2017-09-26 | 一种低密度硅橡胶及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107722634A CN107722634A (zh) | 2018-02-23 |
CN107722634B true CN107722634B (zh) | 2020-08-11 |
Family
ID=61208083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710885259.2A Active CN107722634B (zh) | 2017-09-26 | 2017-09-26 | 一种低密度硅橡胶及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107722634B (zh) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110872440A (zh) * | 2018-08-30 | 2020-03-10 | 嘉兴未来新材料科技有限公司 | 一种用于文胸的泡棉材料 |
CN110172328B (zh) * | 2019-05-30 | 2022-07-01 | 北京诚和龙盛工程技术有限公司 | 一种自流平绝缘防潮封堵剂 |
CN110396295B (zh) * | 2019-08-02 | 2020-12-25 | 北京化工大学 | 一种耐高温隔热的室温硫化有机硅发泡密封胶及其制备方法 |
CN110903657B (zh) * | 2019-12-13 | 2022-10-18 | 成都拓利科技股份有限公司 | 可快速就地发泡成型的组合物及其制备的大尺寸发泡硅橡胶材料 |
CN111234535B (zh) * | 2020-03-30 | 2022-05-10 | 浙江师范大学 | 一种用于制作玩具的三组分复合材料及其制备方法 |
CN112908528B (zh) * | 2020-12-10 | 2023-02-10 | 睿惢思工业科技(苏州)有限公司 | 一种导电泡棉及其制作工艺 |
CN112852167B (zh) * | 2021-01-12 | 2023-04-28 | 江西蓝星星火有机硅有限公司 | 具有低压缩变形的低硬度透明液体硅橡胶组合物及其制备方法和应用 |
CN113956667B (zh) * | 2021-10-22 | 2023-04-07 | 东莞市曦晨启明新材料科技有限公司 | 一种发泡硅橡胶及其制备方法和应用 |
CN115079417A (zh) * | 2022-07-14 | 2022-09-20 | 歌尔股份有限公司 | 软胶件和电子设备 |
CN115029003A (zh) * | 2022-07-14 | 2022-09-09 | 歌尔股份有限公司 | 液态硅胶、硅胶件及电子设备 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4801622A (en) * | 1987-02-03 | 1989-01-31 | Shin-Etsu Chemical Co., Ltd. | Curable and foamable organopolysiloxane composition |
CN103087528A (zh) * | 2011-10-31 | 2013-05-08 | 日东电工株式会社 | 有机硅树脂组合物、片及其制法、光半导体元件装置 |
CN106380855A (zh) * | 2016-09-07 | 2017-02-08 | 福建农林大学 | 一种双组份有机硅泡沫材料及其简易辅助发泡工艺 |
-
2017
- 2017-09-26 CN CN201710885259.2A patent/CN107722634B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4801622A (en) * | 1987-02-03 | 1989-01-31 | Shin-Etsu Chemical Co., Ltd. | Curable and foamable organopolysiloxane composition |
CN103087528A (zh) * | 2011-10-31 | 2013-05-08 | 日东电工株式会社 | 有机硅树脂组合物、片及其制法、光半导体元件装置 |
CN106380855A (zh) * | 2016-09-07 | 2017-02-08 | 福建农林大学 | 一种双组份有机硅泡沫材料及其简易辅助发泡工艺 |
Also Published As
Publication number | Publication date |
---|---|
CN107722634A (zh) | 2018-02-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107722634B (zh) | 一种低密度硅橡胶及其制备方法 | |
TWI414549B (zh) | High foam ratio of silicone rubber sponge | |
WO2012058956A1 (zh) | 液体硅橡胶组合物及其制备方法 | |
US20080214688A1 (en) | Silicone rubber sponge composition | |
CN109135299B (zh) | 一种绝缘子用双组分阻燃液体硅橡胶及其制备方法 | |
JP4781276B2 (ja) | カオリン含有シリコーンゴム組成物の製造方法 | |
US20200347201A1 (en) | Millable silicone rubber composition, millable silicone rubber sponge, and method for producing said sponge | |
CN105440683B (zh) | 抗静电性硅橡胶组合物、其固化物和其制造方法 | |
JP2009073980A (ja) | シリコーンゴム組成物 | |
CN107849259B (zh) | 有机硅弹性体及其制备和用途 | |
KR101721163B1 (ko) | 실리콘 고무 스펀지용 조성물 및 실리콘 고무 스펀지 제조방법 | |
JP2022542133A (ja) | エラストマーフォーム用シリコーン組成物 | |
Xu et al. | Fabrication of polysiloxane foam with a pendent phenyl group for improved thermal insulation capacity and thermal stability | |
CN105778511A (zh) | 一种室温硫化有机硅泡沫密封剂及其制备方法 | |
KR101729993B1 (ko) | 균일하고 닫힌 셀을 가지는 열경화형 실리콘 스펀지 고무 조성물, 그의 제조방법 및 그로부터 제조된 스펀지 고무 제품 | |
JP4704954B2 (ja) | 導電性シリコーンゴム組成物及び導電性シリコーンゴムスポンジ | |
CN116333500A (zh) | 一种低密度高模量有机硅复合材料及其制备方法和应用 | |
JP2013103991A (ja) | ミラブル型シリコーンゴムコンパウンド及びシリコーンゴム組成物の製造方法 | |
CN116057122B (zh) | 弹性体组合物、弹性体组合物的制造方法、交联物、以及成型体 | |
JP2011161767A (ja) | タイヤ製造用ブラダーおよび該タイヤ製造用ブラダーの製造方法 | |
JP5005203B2 (ja) | シリコーン発泡体の製造方法 | |
JP7484140B2 (ja) | キーパッド作製用シリコーンゴム組成物及びキーパッド | |
JP2015214635A (ja) | ミラブル型シリコーンゴムコンパウンド及びミラブル型シリコーンゴム組成物の製造方法 | |
JP2001315135A (ja) | 低比重シリコーンゴム弾性体の製造方法 | |
CN112321848A (zh) | 胶乳制品用室温硫化硅橡胶乳液、硅橡胶海绵及制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20211013 Address after: 311100 No. 10, Yuda Road, Yuhang street, Hangzhou, Zhejiang Patentee after: HANGZHOU RIYAO TECHNOLOGY Co.,Ltd. Address before: 2318 yuhangtang Road, Cangqian street, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Normal University |
|
TR01 | Transfer of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A low-density silicone rubber and its preparation method Granted publication date: 20200811 Pledgee: Zhejiang Hangzhou Yuhang Rural Commercial Bank Co.,Ltd. Yuhang Branch Pledgor: HANGZHOU RIYAO TECHNOLOGY Co.,Ltd. Registration number: Y2024980013839 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right |