IT1031956B - Fixing of acid dyes on polyamide fibres - by treating with condsn. prods. of sulphonated 4,4'-dihydroxy diphenyl sulphone and aldehydes - Google Patents

Fixing of acid dyes on polyamide fibres - by treating with condsn. prods. of sulphonated 4,4'-dihydroxy diphenyl sulphone and aldehydes

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Publication number
IT1031956B
IT1031956B IT2053375A IT2053375A IT1031956B IT 1031956 B IT1031956 B IT 1031956B IT 2053375 A IT2053375 A IT 2053375A IT 2053375 A IT2053375 A IT 2053375A IT 1031956 B IT1031956 B IT 1031956B
Authority
IT
Italy
Prior art keywords
prods
condnsn
fixing
aldehydes
dihydroxy diphenyl
Prior art date
Application number
IT2053375A
Other languages
Italian (it)
Original Assignee
Dainippon Pharmaceutical 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
Priority claimed from JP49021232A external-priority patent/JPS5239475B2/ja
Priority claimed from JP49114549A external-priority patent/JPS5140482A/en
Application filed by Dainippon Pharmaceutical Co filed Critical Dainippon Pharmaceutical Co
Priority to IT2053375A priority Critical patent/IT1031956B/en
Application granted granted Critical
Publication of IT1031956B publication Critical patent/IT1031956B/en

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Abstract

Fixatives to improve fastness of dyes on polyamide fibres, consisting of condnsn. prods. (A) from 4, 4'-dihydroxy diphenyl sulphone (I), its sulphonic acid derivs. and lower aliphatic aldehydes or their metal salts, in which the condnsn. prods. have average mol. wt. of 5000-30000 and a ratio of C to S atoms of 3-4.8:1. Also prepn. of the condnsn. prods., and fixing of dyed polyamide fabrics in baths contg. the condnsn. prods. at 95-120 degrees C. Fastness obtained is considerably better than by use of known condensates of similar type, and even better than by use of tannin/potassium antimony tartrate as fixative, without the cost, toxicity and effluent disposal problems of the latter.
IT2053375A 1974-02-21 1975-02-21 Fixing of acid dyes on polyamide fibres - by treating with condsn. prods. of sulphonated 4,4'-dihydroxy diphenyl sulphone and aldehydes IT1031956B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT2053375A IT1031956B (en) 1974-02-21 1975-02-21 Fixing of acid dyes on polyamide fibres - by treating with condsn. prods. of sulphonated 4,4'-dihydroxy diphenyl sulphone and aldehydes

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP49021232A JPS5239475B2 (en) 1974-02-21 1974-02-21
JP49114549A JPS5140482A (en) 1974-10-03 1974-10-03 Horiamidokeisenino senshokukenrodozoshinho
IT2053375A IT1031956B (en) 1974-02-21 1975-02-21 Fixing of acid dyes on polyamide fibres - by treating with condsn. prods. of sulphonated 4,4'-dihydroxy diphenyl sulphone and aldehydes

Publications (1)

Publication Number Publication Date
IT1031956B true IT1031956B (en) 1979-05-10

Family

ID=27273071

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2053375A IT1031956B (en) 1974-02-21 1975-02-21 Fixing of acid dyes on polyamide fibres - by treating with condsn. prods. of sulphonated 4,4'-dihydroxy diphenyl sulphone and aldehydes

Country Status (1)

Country Link
IT (1) IT1031956B (en)

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