JPS55125133A - Foam and production thereof - Google Patents

Foam and production thereof

Info

Publication number
JPS55125133A
JPS55125133A JP3474579A JP3474579A JPS55125133A JP S55125133 A JPS55125133 A JP S55125133A JP 3474579 A JP3474579 A JP 3474579A JP 3474579 A JP3474579 A JP 3474579A JP S55125133 A JPS55125133 A JP S55125133A
Authority
JP
Japan
Prior art keywords
solution
foam
aqueous
fibroin
metal salt
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
JP3474579A
Other languages
Japanese (ja)
Other versions
JPS5921339B2 (en
Inventor
Yukio Horikawa
Hiroshi Jinno
Koichiro Otomo
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.)
Kanebo Ltd
Original Assignee
Kanebo Ltd
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 Kanebo Ltd filed Critical Kanebo Ltd
Priority to JP3474579A priority Critical patent/JPS5921339B2/en
Publication of JPS55125133A publication Critical patent/JPS55125133A/en
Publication of JPS5921339B2 publication Critical patent/JPS5921339B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE: To produce a foam having smooth and soft touch and excellent water absorptivity and being soft even in the dry state, by adding a crosslinking agent and a specific aqueous dispersion of rubber to an aqueous solution of silk fibroin, foaming and setting the resulting mixture, and subjecting the foam to crosslinking treatment.
CONSTITUTION: A scored silk stock is dissolved in 2W50 times (solution ratio) of an aqueous solution containing 15W80wt% of an alkali (alkaline earth) metal salt. The resulting aqueous solution is dialyzed to obtain an aqueous fibroin solution having a concentration of 1W20wt% and containing 0.003W0.06wt% of the metal salt. To the aqueous fibroin solution there are added 99W99.5wt% (solids) of an aqueous dispersion of NBR, SBR or natural rubber (all the rubbers have a molecular weight of 2×104W20×104), a crosslinking agent and a surfactant so as to obtain a solution having a fibroin concentration of 0.5W10wt%. Then, the solution is foamed and set under intense agitation while air or inert gas is passed into the solution. Then, the foam produced is crosslinked by wet-heating at 50W130°C, and dried at 50W130°C to obtain a foam having a bulk density of 0.02W0.3g/cm3.
COPYRIGHT: (C)1980,JPO&Japio
JP3474579A 1979-03-22 1979-03-22 Foam and its manufacturing method Expired JPS5921339B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3474579A JPS5921339B2 (en) 1979-03-22 1979-03-22 Foam and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3474579A JPS5921339B2 (en) 1979-03-22 1979-03-22 Foam and its manufacturing method

Publications (2)

Publication Number Publication Date
JPS55125133A true JPS55125133A (en) 1980-09-26
JPS5921339B2 JPS5921339B2 (en) 1984-05-19

Family

ID=12422853

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3474579A Expired JPS5921339B2 (en) 1979-03-22 1979-03-22 Foam and its manufacturing method

Country Status (1)

Country Link
JP (1) JPS5921339B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110982452A (en) * 2019-12-17 2020-04-10 南京师范大学 Latex emulsion adhesive with stable mechanical property and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110982452A (en) * 2019-12-17 2020-04-10 南京师范大学 Latex emulsion adhesive with stable mechanical property and preparation method thereof

Also Published As

Publication number Publication date
JPS5921339B2 (en) 1984-05-19

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