FR2258399A1 - Starch prods contg nitrogen with low viscosity and prodn - by treating starch with cyanamide, for surface sizing of paper etc - Google Patents
Starch prods contg nitrogen with low viscosity and prodn - by treating starch with cyanamide, for surface sizing of paper etcInfo
- Publication number
- FR2258399A1 FR2258399A1 FR7501257A FR7501257A FR2258399A1 FR 2258399 A1 FR2258399 A1 FR 2258399A1 FR 7501257 A FR7501257 A FR 7501257A FR 7501257 A FR7501257 A FR 7501257A FR 2258399 A1 FR2258399 A1 FR 2258399A1
- Authority
- FR
- France
- Prior art keywords
- starch
- prodn
- contg
- low viscosity
- surface sizing
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
New N-contg. starch derivs. (I) which form aq. solns. with low viscosity and storage and viscosity-stability, contain 0.8-12% N and are obtd. by (a) reacting native starch with Nc. NH2 using a molar ratio of NC. NH2 to anhydroglucose units in the starch of 0.07-1.4 in aq. suspension in the presence of 1.0-0.1 equiv. base/mole NC. NH2 at 10-40 degrees C, (b) treating with 0.5-2.5 equiv. mineral acid/mole NC. NH2, (c) sepg. the starch, (d) subjecting the unwashed acid wet starch to mild hydrothermal treatment at 20-100 degrees C, and opt. (e) washing and drying in high-speed driers or heating to the glutinisation temp. (I) are used in the paper industry for surface sizing and the prepn. of coating compsnsn. and also as textile auxiliary and finishing agent, binder for colours and pigments and for the prodn. of adhesives. In adhesives and finishing compsns. it can be used in conjunction with polyvinyl alcohol, proteins thermoplastics and condensn. resins, e.g. urea, thourea maleic and phenolic resins.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742402700 DE2402700A1 (en) | 1974-01-21 | 1974-01-21 | PROCESS FOR MANUFACTURING LOW VISCOSITY AND VISCOSITY STABLE NITROGEN STARCH PRODUCTS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2258399A1 true FR2258399A1 (en) | 1975-08-18 |
FR2258399B1 FR2258399B1 (en) | 1978-03-10 |
Family
ID=5905275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7501257A Granted FR2258399A1 (en) | 1974-01-21 | 1975-01-16 | Starch prods contg nitrogen with low viscosity and prodn - by treating starch with cyanamide, for surface sizing of paper etc |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2402700A1 (en) |
FR (1) | FR2258399A1 (en) |
IT (1) | IT1027227B (en) |
NL (1) | NL160572C (en) |
-
1974
- 1974-01-21 DE DE19742402700 patent/DE2402700A1/en active Pending
- 1974-11-14 NL NL7414858A patent/NL160572C/en not_active IP Right Cessation
- 1974-12-31 IT IT7081374A patent/IT1027227B/en active
-
1975
- 1975-01-16 FR FR7501257A patent/FR2258399A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
NL160572C (en) | 1979-11-15 |
NL160572B (en) | 1979-06-15 |
FR2258399B1 (en) | 1978-03-10 |
NL7414858A (en) | 1975-07-23 |
DE2402700A1 (en) | 1975-07-24 |
IT1027227B (en) | 1978-11-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CD | Change of name or company name | ||
ST | Notification of lapse |