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WO1992013023A1 - Activation de polymeres d'ethylene et de monoxyde de carbone - Google Patents

Activation de polymeres d'ethylene et de monoxyde de carbone Download PDF

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Publication number
WO1992013023A1
WO1992013023A1 PCT/US1992/000169 US9200169W WO9213023A1 WO 1992013023 A1 WO1992013023 A1 WO 1992013023A1 US 9200169 W US9200169 W US 9200169W WO 9213023 A1 WO9213023 A1 WO 9213023A1
Authority
WO
WIPO (PCT)
Prior art keywords
energy
polymer
copolymer
percent
amount
Prior art date
Application number
PCT/US1992/000169
Other languages
English (en)
Inventor
Edward R. Peterson
Gerald M. Lancaster
Original Assignee
The Dow Chemical Company
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by The Dow Chemical Company filed Critical The Dow Chemical Company
Publication of WO1992013023A1 publication Critical patent/WO1992013023A1/fr

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Classifications

    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica

Definitions

  • HF high frequency
  • RF radio frequency
  • MW microwave
  • Patents showing the halogenation of ethylene polymers containing copolymerized carbon monoxide (CO) are 4,616,072 and 4,687,805.
  • RF-heatability, esp. MW-heatability) of the ethylene polymers containing copolymerized CO is on the increase and improvements which enhance or aid in regulating the thermal response (heating) are desired.
  • the prior art has used 'lossy" materials, such as carbon or ferrites, as additives to polymers to induce or increase the loss factor of the polymers so as to induce or increase thermal response of the polymer to electromagnetic radiation energy, thereby causing a heat build-up in the polymer.
  • These "lossy" materials have high loss factors and were often selected because of that property. Also there are reasons why one would wish to avoid the use of additives such as carbon or ferrites, such as for esthetic or clarity purposes.
  • additives having high loss factors to induce or increase the thermal response of a polymer to the effects of electromagnetic radiation energy
  • the present invention uses additives (also called “agents") which have very low loss factors and in so doing achieve a synergistic effect with the RF effect recently found to exist in CO-containing copolymers, as shown in the above-identified patents.
  • a synergistic effect is achieved by adding to a CO-containing olefin copolymer an agent having a very low loss factor.
  • the synergistic effect is that which is produced by the action of electromagnetic radiation in the radio frequency (RF) range, especially in the microwave (MW) range, acting on the novel polymer/agent composition.
  • the agents also have a high dielectric constant.
  • the polymer/agent compositions of this invention are useful in preparing articles in which heating with RF, esp. MW, energy is desired.
  • the CO-containing olefin polymers may contain 1-50 percent CO, preferably 3-30 percent, most preferably 5-20 percent.
  • the preferred olefin which forms the major portion of the polymer is ethylene and for that reason the descriptions and dates in this disclosure are directed to ethylene as the olefin.
  • olefins such as propylene and butene
  • catalysts which can polymerize oxygen-containing monomers, such as CO and AA, with unsaturated hydrocarbons of greater than 2 carbons are not very efficient; the higher olefinic hydrocarbon of greater than 2 carbons are not very efficient; the higher olefinic hydrocarbons usually require a metal coordination catalyst, such as a Ziegler-type catalyst, whereas E/CO and E/CO/AA are efficiently polymerized using a free-radical initiator.
  • Comonomers which may be present in the ethylene polymer in minor amounts are alpha-beta ethylenically unsaturated olefin monomers which contain oxygen atoms and which have more than 3 carbon atoms, especially AA, MAA, VA, and VOH , so long as the total of the CO and the comonomer constitute an amount which is less than 50 percent of the total weight of the polymer.
  • the additives used in the present invention were solid or semi-solid at ordinary ambient temperature, were blendable with the CO-containing polymer when the polymer was molten, and they remained dispersed when the polymer was cooled to its freezing temperature.
  • Table I illustrates the heating rate of various filler materials used in ECO polymer which has a CO content of 10 percent by weight.
  • the filler was added in powder mixture or blended pellets in the amount of 10 percent by weight.
  • the temperatures were given in degrees celsius.
  • the average standard deviation of the 5 runs was reported in the "ASD” column and the maximum temperature of the 5 runs was in the "MAX” column.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

On ajoute des additifs possédant des facteurs à pertes faibles et des constantes diélectriques élevées, à des copolymères d'oléfines et de monoxyde de carbone, ce qui augmente par synergie la réaction thermique positive des copolymères à l'action de l'énergie haute fréquence, particulièrement de l'énergie micro-ondes. Les additifs peuvent être, par exemple, des sels de métaux, des oxydes de métaux ou des composés métallo-organiques. Le copolymère est, de préférence, constitué par de l'éthylène et du monoxyde de carbone (E/CO), ou par un terpolymère de E/CO/M, où M représente des quantités mineures d'un ou plusieurs autres monomères oléfiniquement insaturés et copolymérisables avec l'éthylène.
PCT/US1992/000169 1991-01-16 1992-01-10 Activation de polymeres d'ethylene et de monoxyde de carbone WO1992013023A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64210191A 1991-01-16 1991-01-16
US642,101 1991-01-16

Publications (1)

Publication Number Publication Date
WO1992013023A1 true WO1992013023A1 (fr) 1992-08-06

Family

ID=24575222

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/000169 WO1992013023A1 (fr) 1991-01-16 1992-01-10 Activation de polymeres d'ethylene et de monoxyde de carbone

Country Status (2)

Country Link
AU (1) AU1341892A (fr)
WO (1) WO1992013023A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137332A2 (fr) * 1983-09-12 1985-04-17 The Dow Chemical Company Matières plastiques chauffables par haute fréquence
WO1986007010A1 (fr) * 1985-05-28 1986-12-04 The Dow Chemical Company Laminage a haute frequence de mousses polymeres

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137332A2 (fr) * 1983-09-12 1985-04-17 The Dow Chemical Company Matières plastiques chauffables par haute fréquence
EP0455265A2 (fr) * 1983-09-12 1991-11-06 The Dow Chemical Company Polymères oléfiniques chauffables par haute fréquence
WO1986007010A1 (fr) * 1985-05-28 1986-12-04 The Dow Chemical Company Laminage a haute frequence de mousses polymeres

Also Published As

Publication number Publication date
AU1341892A (en) 1992-08-27

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