Nitto Boseki Co., Ltd.

501 Nitto Boseki, Co. Ltd

Nitto Boseki

Kiyoshi Shimizu

Susumu Harada

Keizo Ogihara

Hajime Serizawa

Ikuo Hayashi

Tadao Itikawa

Masayuki Ujiie

Koichi Ojima

Toshio Ueda

Sakuro Hasegawa

Kenji Kageno

Tadao Endo

A novel photosensitive resin composition, which has fairly high sensitivity to light and developable with water comprising of essential components a resin represented by the general formula (I), ##STR1## wherein X, which may be present or absent, represents acetic acid when present, Y stands for a group containing carbon-carbon double bond(s) represented by the formula (II), ##STR2## n is an integer of 10 or greater, more than 0 and less than 1, and t is 0 or 1, and a sodium or potassium salt of 4,4'-diazidostilbene-2,2'-disulfonic acid represented by the general formula (IV), ##STR3## wherein z stands for sodium atom or potassium atom; or the resin represented by the general formula (I), the sodium or potassium salt of 4,4'-diazidostilbene-2,2'-disulfonic acid represented by the general formula (IV), and an aromatic ketone represented by the general formula (V), ##STR4## wherein G stands for hydrogen atom or an amino group or dialkylamino group represented by the general formula (VI), ##STR5## where u is 0, 1 or 2.

Water soluble photosensitive resin compositions with bisazide compound

A functional resin derived from a polyallylamine or polyvinylamine and having unsaturated C.dbd.C bonds such as allyl groups at terminals of side chains has good coating properties and strong adhesiveness to a substrate, thus can be used as protective films for various substrates, coating compositions and adhesives.

Functional polymers derived from polyamines and process for producing

High molecular weight polymers are produced in a high yield by polymerizing inorganic acid salts of monoallylamine or N-substituted monoallylamines in a polar solvent in the presence of a specific azo type radical initiator.

Process for the preparation of polymers of inorganic acid salts of

A process for producing a novel photosensitive resin having cinnamic groups, comprising reacting a polyallylamine represented by the general formula (I) ##STR1## (wherein n is at least 10) or an inorganic acid salt thereof with a compound having a cinnamic group in the presence of a solvent. The process is free from drawbacks as experienced in the production of a conventional photosensitive resin (e.g. polyvinyl cinnamate), such as formation of by-products during the polymerization of a monomer (e.g. vinyl cinnamate).

Process for producing novel photosensitive resins

A new functionalized resin represented by the general formula was derived from polyallylamine. ##STR1## [wherein; X represents the general formula ##STR2## (t is 0 or 1, l is an integer of 1 to 20), n.gtoreq.10, 0&lt;j&lt;1, u=1 or 2, and m=1 or 2, with the proviso that t and m are not simultaneously 0]. The functionalized resin is preferably used for recovering heavy metals in waste water and for optically dissolving amino acids.

Novel functionalized resin derived from polyallylamine

A novel isonitrile group-containing polymer free of the problem of bad odor inherent in isonitrile compounds is obtained by making use of carbylamine reaction which is now abandoned as means for the synthesis of low-molecular isonitrile compounds.

Novel isonitrile group-containing polymers and process for preparing the

N-substituted secondary monoallylamine salts can be easily polymerized in a polar solvent by using as catalyst a water-soluble radical initiator containing azo group in the molecule, and polymers with a high degree of polymerization can be obtained therefrom in a high yield.

Polymers of N-substituted secondary monoallylamines and their salts and

A new functionalized resin represented by the general formula was derived from polyallylamine. ##STR1## [wherein; X represents the general formula

A sequential polyamino acid resin having a remarkably high molecular weight and special amino acid sequence as repeating unit in the resin can be produced by conducting polycondensation of a peptide active ester acid salt in an aprotic polar solvent in the presence of a tertiary amine and phosphorus pentoxide.

Producing sequential polyamino acid resin

This invention relates to a novel acylation process which comprises using as the acylating agent an o-hydroxy-substituted aromatic oxime ester represented by the general formula (I) ##STR1## and mixing said acylating agent with an amine substance represented by the general formula (III) ##STR2## to form a compound represented by the general formula (IV) ##STR3##

Process for acylation with novel acylating agent

In a process for producing a polymer of monoallylamine comprising polymerizing monoallylamine, the polymerization is carried out using as a monomer inorganic acid salts (e.g., hydrochloride, sulfate, etc.) of monoallylamine in the presence of an azo type radical initiator. By the process, polymers of monoallylamine having a high degree of polymerization can be obtained in high yield.

Process for producing polymers of monoallylamine

A sequential polyamino acid resin having a remarkably high molecular weight and special amino acid sequence as repeating unit in the resin can be produced by conducting polycondensation of a dipeptide active ester acid salt in an aprotic polar solvent in the presence of a tertiary amine and phosphorus pentoxide.

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Koriyama, Japan

Kiyoshi Shimizu