GB1022051A - Improvements in or relating to polypropylene foam and process of making same - Google Patents

Improvements in or relating to polypropylene foam and process of making same

Info

Publication number
GB1022051A
GB1022051A GB36980/63A GB3698063A GB1022051A GB 1022051 A GB1022051 A GB 1022051A GB 36980/63 A GB36980/63 A GB 36980/63A GB 3698063 A GB3698063 A GB 3698063A GB 1022051 A GB1022051 A GB 1022051A
Authority
GB
United Kingdom
Prior art keywords
cross
sulfonazide
polypropylene
linking
blowing
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.)
Expired
Application number
GB36980/63A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hercules Powder Co
Original Assignee
Hercules Powder Co
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 Hercules Powder Co filed Critical Hercules Powder Co
Publication of GB1022051A publication Critical patent/GB1022051A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08J9/0014—Use of organic additives
    • C08J9/0033—Use of organic additives containing sulfur
    • 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
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/43—Compounds containing sulfur bound to nitrogen
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • 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
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers

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)

Abstract

Polypropylene foam may be prepared by a process which comprises blending stereoregular polypropylene with a blowing agent and an azido cross-linking agent, and heating the blend at a temperature sufficient to release gas from the blowing agent whereby blowing and cross-linking of the polypropylene are effected. Chemical and solvent blowing agents may be used and exemplified are azobisformamide, trichlorotrifluoroethane, dichloromethane and pentane. The preferred azido cross-linking agents are those having the general formula R(SO2N3)x where R is an alkylene, arylene, aralkylene or alkarylene radical and x is an integer greater than 1. Many examples of azido cross-linking agents are given but 1,10-decane-bis(sulfonazide) and a chloroaliphatic hydrocarbon compound containing a plurality of sulfonazide groups are the ones preferred. Other classes of azido cross-linking agents may be those having the general formulaae <FORM:1022051/C3/1> An elastomer, e.g. an ethylene-propylene copolymer, ethylene-propylene-diene terpolymer or polyisobutylene may also be included in the blend. The foams from this process have a uniform cell structure in which at least 50% of the cells are closed and have densities of from 2 to 50 lb. per cubic foot. They may be extruded into sheets, rods and tubes, coated on to wire and cables and compression moulded to form shaped articles.ALSO:A chlorinated aliphatic poly-(sulfonazide) is prepared by passing sulphur dioxide into a solution of a commercial mixture of hydrocarbons containing 11 and 12 carbon atoms per molecule in carbon tetrachloride, exposing the mixture to ultra-violet light and simultaneously passing in chlorine, removing the solvent under vacuum and adding dropwise to the resultant chlorosulfonated hydrocarbon in acetone a sodium azide solution in water. After stirring and heating, the solvent is removed and the resulting mixture diluted with chloroform. The solution so obtained is washed with water and dried and on removing the diluent the desired product is obtained. The chlorinated aliphatic poly-(sulfonazide) may be used as a cross-linking agent in the preparation of polypropylene foams (see Division C3).
GB36980/63A 1962-10-15 1963-09-19 Improvements in or relating to polypropylene foam and process of making same Expired GB1022051A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US23069262A 1962-10-15 1962-10-15
US23073362A 1962-10-15 1962-10-15
US23074062A 1962-10-15 1962-10-15

Publications (1)

Publication Number Publication Date
GB1022051A true GB1022051A (en) 1966-03-09

Family

ID=27398113

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36980/63A Expired GB1022051A (en) 1962-10-15 1963-09-19 Improvements in or relating to polypropylene foam and process of making same

Country Status (6)

Country Link
AT (1) AT265654B (en)
BE (1) BE638643A (en)
DE (1) DE1544999A1 (en)
ES (1) ES292369A1 (en)
GB (1) GB1022051A (en)
NL (1) NL299247A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939237A (en) * 1971-11-19 1976-02-17 Asahi Dow, Ltd. Method of making a fluid transmitting porous tube or sheet
DE2911719A1 (en) * 1979-03-24 1980-09-25 Freudenberg Carl Fa METHOD FOR PRODUCING LIGHTWEIGHT FOAM FROM THERMOPLASTIC CRYSTALLINE PLASTICS
WO2001040374A2 (en) * 1999-12-03 2001-06-07 The Dow Chemical Company Grafted thermoplastic compositions and fabricated articles therefrom
EP1295910A1 (en) * 2001-09-25 2003-03-26 Borealis GmbH Insulating foam composition
CN109342489A (en) * 2018-12-07 2019-02-15 黑龙江省能源环境研究院 One kind is for detecting the volatile partial temperature control structure of building materials
CN112457518A (en) * 2020-11-03 2021-03-09 浙江理工大学 Laser foaming polyelectrolyte film and area pore-forming process thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016146151A1 (en) 2015-03-13 2016-09-22 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Non explosive bis-sulfonyl azides

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939237A (en) * 1971-11-19 1976-02-17 Asahi Dow, Ltd. Method of making a fluid transmitting porous tube or sheet
DE2911719A1 (en) * 1979-03-24 1980-09-25 Freudenberg Carl Fa METHOD FOR PRODUCING LIGHTWEIGHT FOAM FROM THERMOPLASTIC CRYSTALLINE PLASTICS
WO2001040374A2 (en) * 1999-12-03 2001-06-07 The Dow Chemical Company Grafted thermoplastic compositions and fabricated articles therefrom
WO2001040374A3 (en) * 1999-12-03 2002-02-28 Dow Chemical Co Grafted thermoplastic compositions and fabricated articles therefrom
US6395791B1 (en) 1999-12-03 2002-05-28 The Dow Chemical Company Grafted thermoplastic compositions and fabricated articles therefrom
EP1295910A1 (en) * 2001-09-25 2003-03-26 Borealis GmbH Insulating foam composition
WO2003029345A2 (en) * 2001-09-25 2003-04-10 Borealis Gmbh Insulating foam composition
WO2003029345A3 (en) * 2001-09-25 2004-02-19 Borealis Gmbh Insulating foam composition
KR100854938B1 (en) 2001-09-25 2008-08-29 보레알리스 게엠베하 Insulating foam composition
CN109342489A (en) * 2018-12-07 2019-02-15 黑龙江省能源环境研究院 One kind is for detecting the volatile partial temperature control structure of building materials
CN109342489B (en) * 2018-12-07 2023-05-23 黑龙江省能源环境研究院 A local temperature control structure for detecting building materials volatility
CN112457518A (en) * 2020-11-03 2021-03-09 浙江理工大学 Laser foaming polyelectrolyte film and area pore-forming process thereof

Also Published As

Publication number Publication date
AT265654B (en) 1968-10-25
DE1544999A1 (en) 1971-05-27
BE638643A (en) 1964-04-14
ES292369A1 (en) 1963-12-01
NL299247A (en) 1965-08-10

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