TW528781B - Injection moldable (Polyethylene terehthalate) composite resin - Google Patents

Abstract

Recycled PET scrap or recycled post-consumer PET bottle regrind can be modified into injection moldable PET composite resin by compounding with polycarbonate, ABS, and SEBS (or SBS). The weight percentage of each component are described as in the specification.

Description

^ 28781

[Field of the invention] _The present invention relates to a moldable poly (ethylene-acrylic acid) composition, especially a moldable product which is produced by recycling recycled plastic bottles and suitable for injection into rolls. Poly (acetamidine · phthalic acid) composition. [Background of the Invention] It is widely known that linear polyacetate such as poly (ethylene-caproic acid) (PE butyl) has low physical properties such as heat resistance. However, using conventional molding methods to mold such resins is difficult. The unmodified PET resin crystallizes slowly during the injection molding process, which causes pE to harden in ^ Kmolding), and can only be made into parts with low impact resistance (imPaGt reSiSUnee). In order to initiate the crystallization of poly (ethylene-anilic acid) (PET) resin, a high temperature process is unavoidable (higher than the temperature used in traditional molding). This process is not only inconvenient, but also difficult to use. High temperature processes are more likely to degrade poly (vinyl acetate) (PET) resin. Especially due to lengthy molding ^. Weekly $, often leads to serious degradation of PET in the high temperature cavity of the injection molding machine. In addition, unmodified or unmodified pET is extremely fragile and usually blocks the nozzle after one shot, making it difficult to make injection molding applications commercially. Therefore, although injection molding is the most widely used manufacturing method in the plastics industry, PET is described as "difficult, and almost n should be expected to be injection molding methods." It is the recycling of PET and its utilization rate after recycling is not high. From the standpoint of environmental protection or recycling benefits, there is an urgent need to improve the recycling. This paper standard applies the CNS A4 specification (210 X 297? F

Install ------ f% first read the back > i intend to fill out this page) Order --------- 0 528781 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs

-------- ^ ----— — ί write this page) A7 V. Description of the invention (2 Use efficiency to increase the willingness and price of recycling pET. Because d = the rate of recycling of PET Using methods, such as recycling "there are quite a lot of moldings, which is conducive to injection molding manufacturing ii: warm processing, can be used to collect the ribs as a step composition of the material. At present ~ the inventor, because of this, actively The spirit of the invention is to think about a "composition for injection molding" which can be described as a problem. After several research experiments, the earthen element has made this invention that benefits the world. [Summary of the invention] The main purpose of the invention is The present invention provides a moldable, mouth (acetyl acid) resin composition for injection molding, which can be applied to injection molding and molding products without blocking the nozzle. A secondary object of the present invention is to provide a seed injection The moldable resin composition for molding can be injected at a non-high temperature. Another object of the present invention is to provide a moldable poly (ethylene glycol) resin composition for injection molding. , Can be used for any injection molding machine, do not need to spend expensive to do any The improvement of machinery or equipment is beneficial to any small and medium-sized manufacturing plant for any pET application. The composition for injection molding of the present invention includes magic A) 5% to 30% of the polycarbonate resin, (B) 3% to 25% by weight of the ABS resin, (0% to 1 ( )% By weight

Dimensions of this paper (Tuan Jiaxian Secret) G xli? 528781 A7 V. Description of the invention (彡) SEBS resin; and (D) 50% to 90% by weight pET scraps. Because the composition of the present invention is novel, it can Provide industrial use, and indeed have enhanced effectiveness, so apply for an invention patent in accordance with law. [Detailed description of the preferred embodiment]

The injection molding composition of the present invention comprises (A) 5% to 30% by weight polycarbonate resin, (B) 3% to 25 ° / 0% by weight ABS resin, and (C) 0% to 1 〇% by weight of SBS resin or SEBS tree month, and (d) 50¾ to 90% by weight of pe butyl crumbs. ○ Mingzhi injection molding composition is suitable for any injection molding machine, do not need to do anything when using W The improvement of the machine, and the composition for injection molding of the present invention can be applied at the conventional injection molding temperature. The PET resin scrap of the injection molding composition of the present invention may be any PET resin scrap, even used pET resin scrap or recycled pET resin scrap, such as recycled poda chopped soda bottle shredded pET Resin scrap. The polycarbonate of the injection molding composition of the present invention may be any polycarbonate, even used polycarbonate or recycled polycarbonate. The ABS resin of the composition for injection molding of the present invention may be any ABS resin, even used ABS resin or recycled ABS resin. The content of the polycarbonate of the injection molding composition of the present invention is from $% to 30 ° / °% by weight, preferably 10 ° /. To 20% by weight. Applicable specifications of this paper's heartness: Q x 29 such as · 528781 A7 V. Description of the invention (bucket) The content of PET scrap for injection molding composition is 5 ()% to the state weight percentage, preferably 70% To 80% by weight. The composition for injection molding of mountain moon can also be added with glass fiber, talc, 77 stone, or mica to strengthen the plastic; artificial rubber such as (technology can be used to improve this composition into a new artificial In addition, because the composition for injection molding does not need to be injection molded at high temperature, and the operating temperature is about 45 ° F, the PET composition of the present invention can also be blended with microbially decomposable plastics. And pE Ding is modified into a new microbially decomposable plastic. 组合 The injection molding composition of the present invention can also add various additives, such as softeners, plasticizers, lubricants, antioxidants, ultraviolet absorbers, as needed. , Flame retardants, antistatic agents, pigments, dyes and other fillers traditionally used in injection molding compositions. The composition of the present invention can be made by any conventional or conventional method for f molding. The preferred method includes The ingredients of these compositions are melted and mixed in a twin screw extruder, and the extruded composition is pelletized, and then the pelletized < composition is conventionally The molding machine. Review Committee to make more expensive understand the technical contents of the present invention act injection molding composition of the preferred embodiment described below.

The special extruder is used for printing. The extruder used in this example is David Standard 41/2, and the single-shaft extruder has a length and diameter ratio of 32:!. The knife early granulation equipment used in this embodiment is a Ga 1 a water-cut granulation system. This paper has a standard (CNS) A4 specification (χ Norwegian public) 528781 V. Description of the invention (Even) Private 15 grams of polycarbonate resin (purchased from GE piwticst Lexan I41), 5 grams of ABS resin particles (purchased from GEpiasticsi

CyClOlaCT), 5 grams of SBS resin (purchased from Shell, T0n), 75 grams of Pott bottle scraps (recycled scraps purchased from recycling, first, and first and C crushed scraps) preceded After mixing in the mixing tank, the mixture is passed through an extruder and granulated by a pelletizing system, and the granulated plastic granules are recovered and formed. ^ It is known that the plastic granules are used in traditional injection molding machines to mold molded articles, do not cause resistance groups, and can be injection molded products at high temperatures. In summary, the present invention is The characteristics of the conventional technology are: "injection molding = order = = broken: petitions * examiners are advised to observe, as soon as possible, grant quasi-patent, Huihui Duhui, real sense of morality. But it should be noted that this 〆— The examples are provided for convenience of explanation. Evening / examples should only be described in terms of application. Xj 王 张 <The scope of rights is T, not just the above examples. Intellectual Property Bureau, Ministry of Economic Affairs, Consumer Consumption Cooperatives Printed ^ paper size North Korea coffee materials (CNS) A4 specifications (21〇 &gt; &lt; 297? Mm)

Claims (1)

5,287 1 ι · A composition for injection molding; wherein the composition comprises: (A) 10% to 20% by weight of a polycarbonate resin; (B) 5% to 20% by weight of a Β s resin, (C) 0% to 10% by weight of SBS resin; and (D) 70% to 80% by weight of pe τ resin scrap. 2. The composition according to item 1 of the scope of patent application, wherein the composition further comprises one or more reinforcing agents selected from the group consisting of glass fiber, talc, calcium carbonate and mica. 3. The composition as described in item 1 of the patent scope of claim 1, wherein the P E T resin chip is used p E T resin chip or recycled p e τ resin chip. 4. The composition according to item 1 of the scope of the patent application, wherein the polycarbonate is used polycarbonate or recycled polycarbonate. 5. The composition as described in item 丨 of the patent application scope, wherein the ABS resin is used A B S resin or recycled a B S resin.丨 Order 0 ------ i—.i. (Please read the precautions on the back before filling in this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs! A piece of i paper 2T / IV格 ^ ύ Ν (C quasi standard family ^^ 9 9