亚洲成人三区,一级毛片久久久,国产精品密蕾丝视频下载,欧美成人国产va精品日本一级

 

pc5 catalyst/polyurethane catalyst pc5

2023-11-09by admin

pc5 catalyst/polyurethane catalyst pc5

overview:

pentamethyldiethylenetriamine is a highly active catalyst for polyurethane reactions, which mainly catalyzes the foaming reaction, but is also used to balance the overall foaming and gelation reactions. it is widely used in various polyurethane rigid foams, including polyisocyanurate sheet rigid foams. pentamethyldiethylenetriamine is a chemical substance with the molecular formula c9h23n3. it is a highly efficient catalyst for polyurethane soft foams and is used in the formulation of soft foams, and also as a co-catalyst for hard foams to improve the fluidity of pu foams for large capacity refrigerators.

alias: pentamethyldiethylenetriamine, hard foam catalyst pc-5, pc5 catalyst, pc5

chinese name n,n,n,n,n-pentamethyldiethylenetriamine

english name n,n,n’,n”,n”-pentamethyldiethylenetriamine

alias 1,1,4,7,7-pentamethyldiethylenetriamine

cas no. 3030-47-5

alias n,n,n′,n″,n″-pentamethyldiethylenetriamine, hard foam catalyst pc-5, pc5 catalyst, catalyst am-1, pmdeta, hard foam catalyst am-1

molecular weight c9h23n3

chemical formula c9h23n3

molecular weight 173.3

melting point -20℃

boiling point 198℃

solubility soluble in water, ether and alcohol solvents.

appearance colorless or yellowish transparent liquid

flash point 53℃

mdl no.: mfcd00014876

refractive index: 1.442(lit.)

basic information:

chemical name: n,n,n′,n′,n″-pentamethyldiethylenetriamine

alias: pentamethyldiethylenetriamine

abbreviation: pmdeta

english name: n,n,n′,n′,n″-pentamethyldiethylenetriamine.

molecular formula: c9h23n3

relative molecular mass 173.3

cas no. 3030-47-5

physicochemical properties:

pentamethyldiethylenetriamine is colorless to light yellow clear liquid, easily soluble in water, product purity is generally 98.0%, its typical physical properties are: viscosity (25 ℃) 2mpa.s, relative density (20 ℃) 0.8302-0.8306, flash point (closed cup) 72 ℃ or so, flash point (pmcc) 83.3 ℃, boiling range of 196-201 ℃ or 70-80 ℃ (1100pa ), vapor pressure (21℃) 0.29*133pa, freezing point <-20℃. explosion limit:lower limit 1.1%,upper limit 5.6%. refractive index 1.4435±0.0005,ph=11.0

characteristics and uses:

pentamethyldiethylenetriamine is a highly active catalyst for polyurethane reaction, it catalyzes the foaming reaction mainly, and is also used to balance the overall foaming and gel reaction. it is widely used in various polyurethane rigid foams, including polyisocyanurate sheet rigid foams. due to its strong foaming effect, it can improve the foam fluidity, so it improves the product production process and increases the production volume, and it is often used together with dmcha and so on. pentamethyldiethylenetriamine is used alone as a catalyst for polyurethane foam formulations or in combination with other catalysts. when used alone as a hard foam catalyst, the dosage range is 1.0-2.0 parts per 100 parts of polyol.

in addition to being used in rigid foam formulations, pentamethyldiethylenetriamine can also be used in the production of polyether-based polyurethane flexible block and molded foams. for example, 70% of pentamethyldiethylenetriamine is mainly used in the formulation of flexible foam products, the catalyst is active, the foaming speed is fast, and the products have high toughness as well as high load-bearing properties. in the soft foam every 100 parts of polyether the catalyst 0.1-0.5 parts can get better results. it can also be used as auxiliary catalyst for hard foam.

pentamethyldiethylenetriamine quaternary ammonium salt is a delayed catalyst for soft foam, used to prolong the foam whitening time, suitable for complex shaped foam products and box-type foaming process, improve the structure of the bubble holes, and improve the quality of molding. its own dosage range is quite wide, and the change of dosage has no obvious effect on the emulsion time; however, the increase of dosage can shorten the foam rising time, and can shorten the curing time.

hazard statement

hazard code:t

hazard class:22-24-34

safety class:26-36/37/39-45

un number:un2734

storage and transportation:

should be kept sealed and stored in a dry, cool and ventilated warehouse

packaging:

200kg/drum storage:it is recommended to store in dry and cool area with proper ventilation. please fasten the package cover as soon as possible after the original package to waterproof

company?name:

newtop?chemical?materials?(shanghai)?co.,?ltd.

sales?manager:

hunter

e_mail:

?sales@newtopchem.com

telephone:

86-152 2121 6908

fax:

86-021-5657?7830

address:

rm.?1104,?no.?258,?songxing?west?road,
baoshan?district,?shanghai,?china?(mainland)

website:

m.mimgu.com?

admin

亚洲成人三区,一级毛片久久久,国产精品密蕾丝视频下载,欧美成人国产va精品日本一级
国产拍揄自揄精品视频麻豆| youjizz久久| 亚洲天堂网中文字| 欧美国产亚洲另类动漫| 国产精品视频麻豆| 中文字幕一区二区三区av| 最新日韩在线视频| 天堂成人国产精品一区| 一区二区三区免费在线观看| 亚洲精品成a人| 五月天网站亚洲| 久久99久久久久久久久久久| 国产在线播放一区二区三区| 成人福利视频网站| 在线欧美一区二区| 日韩女优av电影| 中文字幕欧美激情| 一区二区高清在线| 美国av一区二区| 成人晚上爱看视频| 欧美色图12p| 欧美变态tickle挠乳网站| 欧美激情在线一区二区| 亚洲已满18点击进入久久| 久久综合综合久久综合| 成人三级在线视频| 3751色影院一区二区三区| 国产欧美一区二区三区在线看蜜臀 | 毛片av一区二区| 粉嫩久久99精品久久久久久夜| 95精品视频在线| 制服丝袜亚洲播放| 亚洲欧美自拍偷拍色图| 日本v片在线高清不卡在线观看| 国产成人免费在线视频| 欧美日韩一级视频| 中文字幕精品一区二区三区精品| 天使萌一区二区三区免费观看| 国产经典欧美精品| 欧美一区二区三区的| 亚洲人成7777| 国产成人免费在线观看不卡| 欧美一区二区三区不卡| 亚洲综合免费观看高清完整版 | 国产一区二区三区最好精华液| 91色.com| 中文无字幕一区二区三区| 水野朝阳av一区二区三区| 97精品国产露脸对白| www亚洲一区| 丝袜诱惑制服诱惑色一区在线观看 | 一区二区三区精品视频在线| 国模冰冰炮一区二区| 欧美日韩在线三区| 亚洲美女屁股眼交| 国产v综合v亚洲欧| 日韩免费在线观看| 日本va欧美va精品发布| 欧美日韩一区二区三区在线看| 亚洲日韩欧美一区二区在线| 成人免费看视频| 中文字幕第一区综合| 高潮精品一区videoshd| 久久综合狠狠综合久久综合88 | 久久精品一区蜜桃臀影院| 久热成人在线视频| 日韩区在线观看| 免费成人深夜小野草| 欧美精品xxxxbbbb| 午夜激情久久久| 欧美丰满高潮xxxx喷水动漫| 午夜精品久久久久久久99水蜜桃| 欧美日韩精品高清| 日韩精品一区第一页| 日韩一二在线观看| 狠狠色丁香久久婷婷综合_中| 欧美一级专区免费大片| 麻豆精品一区二区三区| 欧美一区二区三区视频在线观看| 热久久久久久久| 精品欧美一区二区久久| 国产精品亚洲一区二区三区在线| 国产亚洲成年网址在线观看| 成人精品电影在线观看| 伊人色综合久久天天人手人婷| 欧美午夜理伦三级在线观看| 日韩专区欧美专区| 久久婷婷成人综合色| 成人av在线资源网| 亚洲一区在线观看视频| 欧美一区二区不卡视频| 国产凹凸在线观看一区二区| 国产精品福利一区二区| 欧美三级乱人伦电影| 免费黄网站欧美| 国产精品久久福利| 欧美日本一道本在线视频| 国产伦精品一区二区三区视频青涩| 中文字幕欧美激情一区| 欧美日韩成人综合| 国产精品一区在线观看乱码| 亚洲欧美日韩中文字幕一区二区三区 | 欧美日韩你懂得| 国产一区高清在线| 一区二区三区精品视频在线| 日韩欧美aaaaaa| 91福利视频在线| 国产永久精品大片wwwapp| 一区二区三区丝袜| 精品国产免费人成电影在线观看四季 | 色噜噜狠狠一区二区三区果冻| 午夜久久久影院| 国产精品丝袜91| 精品国产免费人成在线观看| 欧美系列一区二区| 成人性色生活片| 日本va欧美va欧美va精品| 综合久久一区二区三区| 精品国产百合女同互慰| 欧美日韩国产不卡| 色综合咪咪久久| 国产二区国产一区在线观看| 男男成人高潮片免费网站| 一区二区三区在线视频免费观看| 久久综合色播五月| 欧美高清视频在线高清观看mv色露露十八| 成人视屏免费看| 国产激情一区二区三区桃花岛亚洲| 日韩av电影天堂| 亚洲国产成人porn| 一区二区成人在线观看| 亚洲男人的天堂在线观看| 久久久亚洲精品一区二区三区| 欧美一区二区三区公司| 6080国产精品一区二区| 欧美日韩精品一区二区三区四区 | 夜夜嗨av一区二区三区网页| 综合色天天鬼久久鬼色| 亚洲天堂久久久久久久| 亚洲视频每日更新| 自拍视频在线观看一区二区| 欧美激情一区二区在线| 日本一区二区综合亚洲| 欧美极品xxx| 国产精品久久久久久久午夜片| 日本一区二区三区视频视频| 国产免费观看久久| 国产欧美一区二区三区鸳鸯浴 | 一本到一区二区三区| 91欧美激情一区二区三区成人| 国产凹凸在线观看一区二区| 国产**成人网毛片九色 | 日韩欧美电影一区| 欧美电影免费观看高清完整版| 欧美一区二区三区日韩| 亚洲精品一区二区精华| 久久久久久久综合色一本| 国产欧美日韩在线观看| 日韩码欧中文字| 亚洲高清免费观看| 久久电影网站中文字幕| 国产精品1区2区| 不卡的av电影| 精品视频在线免费观看| 欧美成人伊人久久综合网| 国产精品―色哟哟| 亚洲国产综合人成综合网站| 看国产成人h片视频| 高清beeg欧美| 在线播放一区二区三区| 26uuu精品一区二区在线观看| 国产精品久久精品日日| 天天综合天天做天天综合| 国产在线不卡一区| 91久久久免费一区二区| 日韩一级成人av| 亚洲视频一区二区在线| 免费观看在线综合| 91网站最新网址| www国产亚洲精品久久麻豆| 亚洲三级在线看| 国产美女久久久久| 欧美亚洲日本一区| 国产亚洲欧美日韩日本| 亚洲国产va精品久久久不卡综合| 国产美女一区二区| 在线电影院国产精品| 国产欧美日本一区视频| 日韩高清国产一区在线| 一本色道久久综合狠狠躁的推荐| 欧美一卡2卡三卡4卡5免费| 亚洲欧美在线视频| 精品一区二区免费在线观看| 欧美色图12p| 中文字幕亚洲综合久久菠萝蜜| 久久 天天综合| 欧美日韩高清一区二区三区| 亚洲免费毛片网站| 国产91精品在线观看| 久久免费国产精品|