TW408060B - Process for pelletizing elastomeric anionically polymerised polymers - Google Patents

Process for pelletizing elastomeric anionically polymerised polymers Download PDF

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TW408060B
TW408060B TW088107869A TW88107869A TW408060B TW 408060 B TW408060 B TW 408060B TW 088107869 A TW088107869 A TW 088107869A TW 88107869 A TW88107869 A TW 88107869A TW 408060 B TW408060 B TW 408060B
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extruder
polymer
temperature
polymers
patent application
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TW088107869A
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Groot Eleanor Meyer De
David Ralph Stewart
Bing Yang
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Shell Internattonale Res Mij B
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/421Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw and additionally other mixing elements on the same shaft, e.g. paddles, discs, bearings, rotor blades of the Banbury type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/02Making granules by dividing preformed material
    • B29B9/06Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04Particle-shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/397Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • B29C48/625Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/68Barrels or cylinders
    • B29C48/681Barrels or cylinders for single screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/68Barrels or cylinders
    • B29C48/685Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/686Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having grooves or cavities
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/68Barrels or cylinders
    • B29C48/685Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/687Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having projections with a short length in the barrel direction, e.g. pins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/9259Angular velocity

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

408060 A7 B7 五、發明說明( 發明猄H| (請先閱讀背面之注意事項再填寫本頁) 本發明係關於一種具彈性之陰離子聚合之聚合物造粒之 方法。
ULtA 將笨乙烯及丁二烯或異戍二烯之彈性聚合物在有機溶劑 中以陰離子聚合。這些聚合物也時常同時在溶劑_氫化。 在製造這些聚合物的最終步騍需要自經常稱爲聚合物水泥 之聚合物/溶劑混合物/泥漿/懸浮液除去溶劑,以製造可包 裝的乾燥物質。這種最終的處理步驟常被稱爲《修飾”聚 合物。通常將這些聚合物製造成有時難以處理及常常也是 不爻期望的黏性碎屑。與該黏性物質的黏合本性有關的問 題使得在是否可以確實或有利於製造該物質上受到限制。 經濟部智慧財產局員工消費合作社印製 甚至在確實有可能製造這些產物時,其時常以在袋中成 爲碎屑狀銷售,最终用彳可能很難處理產品的形狀及發揮 其預期的用途。碎屑顆粒尺寸非常細微及倾向於覆蓋於儀 器上,產生污穢或廢物,特別是在黏性級的情沉下。一些 產品會在袋中結塊,形13.6_18.】公斤(3〇_4〇碲)之聚合物 枕頭”。必須以手將聚合物的袋子弄破,並且在與其它 成份混合之前,必須先將結塊的物質送入機械研磨機内。 許多聚合物有利於製成粒狀,尤其是熱塑性,但是非彈 化H k種形狀非*容易處理及防黏劑使聚合物粉塵 =易:決凝結問題^以溶融擦壓器(常常是雙螺旋擠壓 乂成^在商業上的熱塑性聚合物粒子, 融及經由鑄模擠壓執行其功 谷 此將其刀成小粒子。本發明 -4- 297公釐) ^紙張尺_雜準(CNSM伐
408060 五、發明說明(2〉 的許多聚合物是高分子吾私ι # π . 于量物貝及高度的彈性物質。各這些 聚合物以雙螺旋熔融擠壓 田一 公益處理時,其傾向於產生足舜的 剪切熱’造成明顧的隊自75 . .、)降解。降解會造成聚合物特性遭受到 重大的缺失。 。因此頭然本發明可能非常有利於在可以製造成粒狀的 這種万式中能夠修飾本發明具有黏性之彈性聚合物。本發 明可能最有利於能夠進行本發明,沒有明顯的聚合物降解作 用。 本發明的概诫 本發月係解決以上时論的問題。根據過去係將笨乙稀及 丁二缔或異戊二埽之彈性陰離子聚合物,包括聚異戍二烯 星狀聚合物以陰離子聚合。如果有需要,該方法也可以併 入氫化作用。將聚合物製造成碎屑狀。接著將乾燥的聚合 物碎屑經由固態擠壓器轉換成粒子。將聚合物碎屑在單螺 旋擠壓器中擠壓,該擠壓器具有縱向成凹槽之筒身及向聚 合物成動的筒身以橫向延伸之釘子。擠壓器具有i 0 : i或更 小的長度對直徑比(L/D),8 : 1或更小較佳,並在30至1〇〇 轉/分鐘下操作,以40至60轉/分鐘較佳。在擠壓器中的溫度 必頊足以使聚合物凝結或熔融,但是溫度應諒不超過聚合 物的降解溫度。在2〇〇"c或更低下進行固態擠壓較佳,並以 160°C或更低最佳。 主皇Jj的詳細韶明 有必要在該固態擠壓法中使用單螺旋擠壓器,使聚合物 努切降至最低。根據以上的討論,過量的剪切可能引起不 -5 - 本紙張尺度適用中國國家標準(CNS)A4規格(21〇 X 297公釐) I . ----裝------^--訂;--τ--„----線 (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 經濟部智慧財產局員工消費合作社印製 408060 A7 _B7____ 五、發明說明(3 ) 希望增加的聚合物溫度,可能引起明顯的降解作用。雙螺 旋擠壓器會增加聚合物煎切及因此不可以在本發明中使用。 在該方法中’由聚合物擠壓會產生充份的機械熱,不需 要設備的辅助加熱及使碎屑預熱。必須產生足夠的熱使聚 合物充份凝結或熔融’以至於可將其擠壓及切成粒子。以 凝結代表聚合物具有足夠的柔軟及足夠的黏性黏結在一起 ’但是尚未通過使聚合物熔融的玻璃轉換溫度點。 已知在本文說明的聚合物型式會在3〇0乞或更高的溫度 下降解’故重要地是在單螺旋擠壓器中的溫度要不超過該 溫度。但是’在擠壓器中可能出現較高的局部溫度,故在 擠壓器中的溫度以200°C或更低非常理想。以1 t或更低 最理想,使可能造成在那些區域的聚合物降解之局部溫度 峰降至最低。 有必要使用單螺旋(與雙螺旋對立)得到凝結作用,不需 要高溫’但是’重要地是聚合物要有充份的混合。為了確 疋會發生遠現象’單螺旋擠壓器的筒身具有縱凹槽及向聚 合物流動的筒身以橫向延伸之釘子D這些特性會增加混合 ,不會明顯增加聚合物的剪切。 聚合物在擠壓器中處理的時間越長,則越有可能發生聚 合物的降解作用。因此,以不使用長的擠壓器較佳。長度 對直徑比(L/D)以10 : 1或更小較理想,以8 ·· 1或更小較佳 ,以4 : 1或更小最佳。 為了獲得充份的混合’擠壓器螺旋應該具有從3〇至^㈨轉/ 分鐘,以配合具有從2 : 1至1 〇 : i之l/D比之擠壓器。如果 本紙張尺度適用中國國家標準(CNS〉A4規格(21〇 χ 297公釐) I --------一---ill-----訂--- I---^-----線 (請先閱讀背面之沒意事項再填寫本頁) 408060 A7 ' ______B7__ 五、發明說明(4 ) L/D比小,則螺旋速度可以比較小。再者,目標是提供充扮 的混合,不要加熱至使聚合物降解的溫度。 (請先閱讀背面之注意事項再填寫本頁) 適合於以本發明的方法修飾之聚合物包括氫化均聚物及 含有從4至12個碳原子之二稀經共聚物、一或數個共扼二缔 烴與含有從8至16個碳原子之一或數個單烯基芳族烴之氨化 共灰物°基礎表合物可以具有星狀或線型結構。氨化聚合 物可以是選擇性、完全或部份氫化。使共軛二缔烴之氮化 聚合物及共概二烯烴與單缔基芳族烴之共聚物氫化較佳, 使得以氫化作用除去超過90%之初烯不飽和物。氮化聚合物 以幾乎不含稀不飽和物較佳。 選擇性氫化作用表示使實質上部份的烯不飽和物氨化及 留下實質上部份的初芳族不飽和物未氫化之方法。根據本 文使用的實質上不含烯不飽和物之烴聚合物是含有每個聚 合物鏈平均少於1 0個碳-碳烯雙鍵之烴聚合物。當官能化作 用在能夠提供高機械剪切之摻合裝置中完成時,則在特定 的條件下,含有超過該烯不飽和物數量之聚合物會在官能 化反應期間表現出過交聯作用3 經濟部智慧財產局員工消費合作社印製 有用的fe聚合物包括那些在大量的懸浮液、溶液或乳液 中製得的聚合物。根據熟知利用自由基、陽離子及陰離子 引發劑或聚合觸媒可以達成以單體製造烴聚合物之聚合作 用》 可根據本文的説明處理廣泛的分子量聚合物。通常聚合 物分子量越大,則越有可能在熟知的熔融處理中發生聚合 物降解作用。因此,本發明對較大的分子量聚合物特別有 - 本紙張心艾週用中國國家標準(CNS)A4規格(210 X 297公爱)一~— ---- 408060
經濟部智慧財產局員工消費合作社印製 五、發明說明(5 ) 利。通常可根據本方法處理具有重量平均分子量介於 100,000至1,200,000之間的聚合物。 根據本文關於線型陰離子聚合物之重量平均分子量代表 以聚苯乙烯為標準之凝膠滲透色譜法(“ GPC”)測得的重 量平均分子量。關於星狀聚合物,重量平均分子量係以光
散射技術決定D 實施例 比較性f施制1 為了更斤解熔融擠壓器性能,則進行許多典型的實驗室 規模之流變試驗。首先計劃在至多2701下測量聚合物八之 熔融流動指數(MFI) ’其是含有6重量%之聚苯乙婦之氫化 聚異戊一烯星狀聚合物。即使在這些高溫度及具有高至 9.9公斤之重量下’物質會非常困難壓過〇2毫米(〇〇〇8英 对铸模)之熔融流動鑄模孔。在同樣的高溫下利用毛細管 流變計之追加測試得到的結果很差。計劃利用加熱至2〇〇 至200 C足19毫米(0.75英叶)Brabender單螺旋熔融擠壓器擠 壓聚合物B,其是另一種含有6重量%之聚苯乙烯之氫化聚 異戊二烯星狀聚合物,並且事實上的確會發生一些降解作 用。具有高剪切混合能力之雙螺旋擠壓器甚至更有可能產 生降解作用. 實施例2 將許多不同的聚合物級在具有附加經改良切割器刀片之 Bodine馬達之57毫米(2.25英吋)單螺旋擠壓器中凝結及造 粒。擠壓器在筒身中具有6個9.5毫米(3/8英吋)寬及】6毫米 (1/16英吋)深之縱凹槽及10個向流動方向以橫向延伸之查 本紙張尺度適用_國國家標準(CNS)A4規格(210 X 297公釐) I.-----Ί — ί.——Μ------— --------線 (請先閱讀背面之注意事項再填寫本頁) 408060
$、發明説明( 子 在表1中展示擠壓器設舛, t上的細卽。利用該擠壓器決定 其疋否有可能將不同的揮 9彈丨生聚合物碎屑物質凝結。頗 驚訝地是該擠壓器能夠輕易 匁灰忧出許多砭些不同物質之粒 子。在所有的測試中,点 在兔種擠壓万式中沒有任何使聚人 物降解的證明。 使萊口 實施例 _查丄1_單螺旋擠1器 螺碇缚直徑 螺距 壓缩比例 L/D 進料器 動力(仟焦 耳/秒) Z 3 3 /笔米(2.25英叶) 102毫米(4英吁) 42.9毫米(1.69英对) 無壓縮 6 單槳包裝機 2.2 1〇2-76.2毫米(/}英吋 至3英吁) 1.38 : 1 4 雙槳包裝機 11.2 / ^ 一,J <3^ | 命令 1干 經濟部智慧財產局員工消費合作社印製 的附加熱達到凝結作用D與㈤心⑽為範園之典型的溶 :擠壓器比對’該擠壓器之L/D比通常較低。料,這些 單螺旋擠壓器在低PRM下會輸送高扭力’因此使降解降至 最低,因為剪切熱之故。高扭力容量允許其輕易處理這些 高彈性物質。測試用擠壓器具有挖成凹槽的筒身及釘子。 這兩種特性會確保使物質受均勻的剪切,並因此受熱凝結 。另外以不具凹槽及釘子的試驗未成功。 以裝配各種速度的切割器之57亳米(2,25英忖)擠壓器使 欲擠壓線束造粒。在35轉/分鐘下進行實驗。未施加任何 外加的熱及冷。因為磨擦熱之故,聚合物的溫度是l5〇t。 所有經試驗之物質受到成功的擠壓,沒有任何降解作用。以 聚合物C(苯乙烯與異戊二烯之線型氫化之嵌段共聚物)更難 達到均句線束。部份線束沿著外邊緣呈現具有碎屑“粉塵” -9* 本紙張尺度適用中國國家標準(CNS)A4規格(210x 297公釐) 經濟部智慧財產局員工消費合作社印製 408060 a? __B7 五、發明說明(7 ) ’其顯示沿著筒身模槽可能有滑動及未充份混合。當溫度 上昇時,則該現象會消失。 也有許多KRATON®物質利用57毫米(2.25英吋)單元擠壓 。研究級聚合物fCRATON® GRP-6919與GRP-6912及商業級 物jj SHELLVIS(®5 0、90、260、3〇0非常適用。在以不同的 轉模設計實驗之後,成功地使商業級聚合物KRAT〇N(S) GI651、G165 0、G1652及研究級GRP-6917粒化。所有的這 些聚合物係由蜆殼化學公司(SheU Chemical Company)製造 的’並且是苯乙晞及/或氫化異戊烯及/或丁二烯之嵌段共聚 物。 實施例3 在57毫米(2.25英吋)試驗成功之後,則利用較太的擠壓器 1 毫米(4英吋)^在表}中可看到擠壓器設計的細節3在該 擠壓器的筒身上也具釘子及凹槽。結果證實同樣會成功。 成功地執行以大的造粒試驗製造約1361公斤(3000磅)之聚合 物A。典型的操作條件爲3 5轉/分鐘,π . 5安培及製造速率 1.36公斤/分(3磅/分)。當在擠壓時,以配備兩個刀片之粒化 器之3.18毫米(1/8英吋)孔尺寸,254孔之鑄模切割物質。接 著將粒子放入小的流化冷卻器。泠卻器配備—具風扇,其 以至多71立方公尺/分鐘(25〇〇立方英呎/分鐘)之速度輸送室 溫空氣。將溫度探針向下放在約筒身的一半之處。以測得 約l5〇°C之筒身溫度顯示製程達到穩定狀態。該溫度是因爲 物貝的男切熱。未施加任何外加的熱及冷。粒子在約§ 0 下離開冷卻器。在整個實驗中未自取樣樣品中發現任何的 -10- 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) — — If — —·111「—I , ---I I I I ί I I I 1 I ' ί 〈請先閱讀背面之注意事項再填寫本頁> 408060 A7 -----—--___B7_ 五、發明說明(8 ) 聚合物降解作用。 來自兩種擠壓器之碎屑及擠壓之聚合物八與只之凝膠滲透 色譜法分析顯示沒有任何降解象徵。也測試在其計劃用途 中當成馬達油中的添加劑之聚合物A與聚合_。同時使用 碎肩及粒子形狀。比較具有碎屑及粒子之油濃度之流變性 測量,顯示具擠壓之聚合物的基本特性没有任何變化。 ί-----·---.---裝.------卜—訂-i (請先閱讀背面之注意事項再填寫本頁) 線—— 經濟部智慧財產局員工消費合作社印製 JI 1 本紙張又度適用中國國家標準(CNS)A4規格(210 x 297公釐)

Claims (1)

  1. rj^l-tQ7a69 公告本 40806嫩 § 3. 4. 六、申請專利範圍 -種使具彈性之陰離子聚合之聚合物造粒之方法,其包 含使聚合物在具有1Q :〖或更小的長度對直徑比之單螺游 擠壓器中進行固態擠壓,其中擠壓器的筒身具有縱凹指 及横向延伸的釘子’以增加混合,其中在擠壓器中的』 度足以使聚合物凝結或熔融,但是比聚合物的降解溫廣 低,並且擠壓器螺旋的速度是從3〇至1〇〇轉/分鐘。 根據申叫專利軏園第丨項之方法,其中在擠壓器中的溫廣 是200°C或更低。 根據申請專利範園第2項之方法,其中在擠壓器中的溫度 是160°C或更低。 根據申請專利範固第!項之方法,其中擠壓器的長度對直 徑比是8 ·· 1或更小,並且擠壓器螺旋的速度是從仙至^ 轉/分鐘。 .--------------装·------•—訂---Ί----線 (請先閱讀背面之注意事項再填寫本育) 經濟部智慧財產局員工消費合作社印製 (2 I格 ^ -4 I)A Ns (c 準 標 家 I國 I國 ί中 I用 適 度 尺 張 紙 本
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