CA2056248A1 - Process for making molded polymeric product with multipass expansion of polymer bead with low blowing agent content - Google Patents

Process for making molded polymeric product with multipass expansion of polymer bead with low blowing agent content

Info

Publication number
CA2056248A1
CA2056248A1 CA2056248A CA2056248A CA2056248A1 CA 2056248 A1 CA2056248 A1 CA 2056248A1 CA 2056248 A CA2056248 A CA 2056248A CA 2056248 A CA2056248 A CA 2056248A CA 2056248 A1 CA2056248 A1 CA 2056248A1
Authority
CA
Canada
Prior art keywords
blowing agent
expansion
multipass
agent content
polymeric product
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.)
Granted
Application number
CA2056248A
Other languages
French (fr)
Other versions
CA2056248C (en
Inventor
William Harrison Harclerode
William Edward Volz
John Vanderveer Wiman
John Christian Voss
Barry Joseph Pekich
John Christian Knutsen
Eugene Karl Zimmermann
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.)
BASF Corp
Original Assignee
Individual
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
Priority claimed from US07/618,342 external-priority patent/US5086078A/en
Priority claimed from US07/618,359 external-priority patent/US5110837A/en
Priority claimed from US07/618,340 external-priority patent/US5110836A/en
Application filed by Individual filed Critical Individual
Publication of CA2056248A1 publication Critical patent/CA2056248A1/en
Application granted granted Critical
Publication of CA2056248C publication Critical patent/CA2056248C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C08J9/16—Making expandable particles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

A method for making low density (0.8-1.1 lb/cu.ft.) expanded polymeric products uses blowing agent in an amount of only from 2 to 4.4 weight percent. The process uses 2 to 5 expansion steps together with a polymer having a particular polydispersity, weight average molecular weight and Mz:Mn, this polymer having a greater expandability than conventional polymers. The process requires only about half of the amount of blowing agent currently being used in commercially viable processes for making expanded polystyrene products. The process can be used with or without a molding step.
CA002056248A 1990-11-26 1991-11-26 Process for making molded polymeric product with multipass expansion of polymer bead with low blowing agent content Expired - Lifetime CA2056248C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US07/618,342 US5086078A (en) 1990-11-26 1990-11-26 Process for making expanded polymeric product with low level of emission of blowing agent
US07/618,359 US5110837A (en) 1990-11-26 1990-11-26 Process for making molded polymeric product with multipass expansion of polymer bead with low blowing agent content
US618,340 1990-11-26
US618,359 1990-11-26
US618,342 1990-11-26
US07/618,340 US5110836A (en) 1990-11-26 1990-11-26 Time-efficient process for making expanded polymeric products with multipass expansion of polystyrene bead

Publications (2)

Publication Number Publication Date
CA2056248A1 true CA2056248A1 (en) 1992-05-27
CA2056248C CA2056248C (en) 1997-03-18

Family

ID=27417211

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002056248A Expired - Lifetime CA2056248C (en) 1990-11-26 1991-11-26 Process for making molded polymeric product with multipass expansion of polymer bead with low blowing agent content

Country Status (6)

Country Link
JP (1) JPH0625458A (en)
KR (1) KR100226186B1 (en)
AU (1) AU643851B2 (en)
CA (1) CA2056248C (en)
MX (1) MX9102216A (en)
MY (1) MY110257A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023146872A3 (en) * 2022-01-25 2023-09-07 Mitsubishi Chemical America, Inc. Hydrophobic polymer compositions and a method to prepare hydrophobic polymer compositions

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5112875A (en) * 1990-11-26 1992-05-12 Basf Corporation Polystyrene having high degree of expandability, and formulation having a highly-expandable polymer therein
JP5813749B2 (en) 2011-03-08 2015-11-17 株式会社カネカ Polyethylene resin foam particles, polyethylene resin in-mold foam molding, and method for producing polyethylene resin foam particles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5112875A (en) * 1990-11-26 1992-05-12 Basf Corporation Polystyrene having high degree of expandability, and formulation having a highly-expandable polymer therein
DE4038044A1 (en) * 1990-11-29 1992-06-04 Basf Ag EXPANDABLE STYRENE POLYMERS WITH HIGH EXPANDABILITY
DE4038043A1 (en) * 1990-11-29 1992-06-04 Basf Ag EXPANDABLE STYRENE POLYMERISATES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023146872A3 (en) * 2022-01-25 2023-09-07 Mitsubishi Chemical America, Inc. Hydrophobic polymer compositions and a method to prepare hydrophobic polymer compositions

Also Published As

Publication number Publication date
JPH0625458A (en) 1994-02-01
MY110257A (en) 1998-03-31
AU643851B2 (en) 1993-11-25
KR920009898A (en) 1992-06-25
MX9102216A (en) 1992-07-08
AU8817591A (en) 1992-05-28
KR100226186B1 (en) 1999-10-15
CA2056248C (en) 1997-03-18

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry