US2316467A - Process of forming laminated products - Google Patents
Process of forming laminated products Download PDFInfo
- Publication number
- US2316467A US2316467A US275057A US27505739A US2316467A US 2316467 A US2316467 A US 2316467A US 275057 A US275057 A US 275057A US 27505739 A US27505739 A US 27505739A US 2316467 A US2316467 A US 2316467A
- Authority
- US
- United States
- Prior art keywords
- zein
- wax
- substance
- bitumen
- solvent
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 21
- 229920002494 Zein Polymers 0.000 description 34
- 239000005019 zein Substances 0.000 description 34
- 229940093612 zein Drugs 0.000 description 34
- 239000000126 substance Substances 0.000 description 33
- 239000001993 wax Substances 0.000 description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 16
- 239000002904 solvent Substances 0.000 description 15
- 235000019441 ethanol Nutrition 0.000 description 11
- 239000000203 mixture Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 5
- 239000010426 asphalt Substances 0.000 description 4
- 241000252165 Elops saurus Species 0.000 description 3
- 240000008042 Zea mays Species 0.000 description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- DSEKYWAQQVUQTP-XEWMWGOFSA-N (2r,4r,4as,6as,6as,6br,8ar,12ar,14as,14bs)-2-hydroxy-4,4a,6a,6b,8a,11,11,14a-octamethyl-2,4,5,6,6a,7,8,9,10,12,12a,13,14,14b-tetradecahydro-1h-picen-3-one Chemical compound C([C@H]1[C@]2(C)CC[C@@]34C)C(C)(C)CC[C@]1(C)CC[C@]2(C)[C@H]4CC[C@@]1(C)[C@H]3C[C@@H](O)C(=O)[C@@H]1C DSEKYWAQQVUQTP-XEWMWGOFSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- -1 aqueous Chemical class 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004203 carnauba wax Substances 0.000 description 2
- 235000013869 carnauba wax Nutrition 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- PCYQQSKDZQTOQG-UHFFFAOYSA-N dibutyl 2,3-dihydroxybutanedioate Chemical compound CCCCOC(=O)C(O)C(O)C(=O)OCCCC PCYQQSKDZQTOQG-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 244000180278 Copernicia prunifera Species 0.000 description 1
- 235000010919 Copernicia prunifera Nutrition 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical group CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 1
- 241000779819 Syncarpia glomulifera Species 0.000 description 1
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 239000012164 animal wax Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 239000002415 cerumenolytic agent Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 125000005909 ethyl alcohol group Chemical group 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Natural products OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000012184 mineral wax Substances 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 239000012177 spermaceti Substances 0.000 description 1
- 229940084106 spermaceti Drugs 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 229940036248 turpentine Drugs 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000012178 vegetable wax Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M17/00—Producing multi-layer textile fabrics
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/04—Hydrocarbons
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/60—Waxes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/61—Bitumen
Definitions
- This invention relates to the production of laminated articles, bodies or structures composed of sheets of paper or other fibrous material united, usually by pressure, through the agency of a suitable adhesive binder forming unitary structures in which the identity of the individual sheets may or may not be completely obliterated; and the primary object of the invention is to provide articles of this character, the adhesive binder of which consists essentially of zein, the alcohol soluble portion of corn (maize) protein, and which articles shall contain a substance or substances of the bitumen-wax type; the paper sheets of which articles may, for example, be
- a further object of the invention is to provide certain novel processes for the production of laminated structures'or articlesoi the character indicated. These processes involve certain procedures whereby the zein is put into colloidal solvents appropriate to each and their solutions mixed together. These substances also reduce brittleness and with such function in view may be regarded as plasticizers.
- the plastifying or plasticizing agent consists of one or more of a group of substances capable of converting the zein into a state in which it will flow and mix with the dispersion in the bitumen-wax substancei gr.
- bitsumen-wax type or substances of the group consisting of the bituminous and waxes
- bitumens consisting chiefly of saturated hydrocarbons such as the asphalts, either'native or the residues, of petroleum and coal tar distillations;
- the mineral waxes consisting mainly of satu-.
- hydrocarbons and free oxygen bodies such as ozokerite, ceresin, montan wax and parafiin; the unsaturated hydrocarbon 'bitumens such as the tars derived from the destructive distillation of wood, coal and other organic material; the pitches derived from the destructive distillation of wood, coal, or animal or vegetable oils (see Standards of 1936 published bythe American Society for Testing Materials, page 1116); the animal waxes, such as beeswax and spermaceti; and the vegetable waxes, such as carnauba, candellila and pisang waxes.
- the invention contemplates two different processes, giving in the end substantially simil: articles, both characterized by the colloidal dispersion of the zein in the bitumen-wax substance: one a hot process, in which a plastifying agent is used to put the zein in a flowing state so that, under the influence of heat and pressure, the desired homogeneous mixture or blending of the zein and bitumen-wax substance will take place; and the other a cold process, in whlch the zein and bitumen-wax substance are dissolved by molten bitumen-wax substance.
- the plasticizing substances which have given the best results are di-butyl tartrate, glycol phthalate, di-ethylene glycol and tri-ethylene glycol.
- a volatile solvent for the zein such as ethyl alcohol of (volume) concentration is used in addition to the plastifying substance.
- zein and the bitumen-wax substance is dissolved in a solvent appropriate for such substance and the solutions are mixed together.
- the usual and preferred solvents for the zein are the alcohols, particularly aqueous, ethyl alcohol, although aqueous methyl or propyl alcohol might be used.
- the solvent for the bitumen-wax substance will depend upon the particular bitumen-wax substance dealt with. In any case, the solvent must be compatible with the zein and be one that will .not cause the zein to precipitate or the mixture of zein and bitumen-wax substance to stratify.
- Suitable solvents for asphalts or other bitumens are toluol and carbon tetrachloride; ior carnauba wax", ethyl alcohol; forcandellila wax, carbon tetrachloride; for pisang wax, anrvl alcohol or turpentine.
- a curing agent such as formaldehyde, may be utilized, either as an ingredient of the mixture or for the subsequent treatment of the articles after the blending of the zein with the bitumen-wax substance has been effected.
- the formula for the zein solution is, in parts by weight, as follows:
- the process of forming the laminated articles may be the same as in the previous example.
- the mixture is heated until the materials Exmts 6.-C0lcl procesa-The bitumen-wax substance here is Pisang wax and the preferred solvent is amyl alcohol.
- EXAMPLE 7 --Cold process.-Here the bitumenwax substance is carnauba wax, and the preferred, solvent is ethyl alcohol, the same solvent ,used for dissolving the zein.
- laminated articles of this invention as composed of sheets of material impregnated with a composition consisting essentially of zein and a substance of the bitumenwax type, it is not intended to exclude plasticizers other than those named, fillers, or other materias which for special purposes may be incorporated into the article.
- Process of making a water resistant laminated article which comprises: dipping sheets of fibrous material impregnated with a substance selected from the group of substances consisting of the bitumens and waxes into a cold solution of zein, a zein solvent and a solvent of the bitu men-wax substance which is compatible with zein; and uniting the impregnated sheets by presmixture containing zein, a zein solvent and a 501- 1 vent of the asphalt which is compatible with the zein to form an adhesive and water resistant bonding medium; and uniting the sheets, in superposition, by pressure.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Patented A r. 13, 1943 PROCESS OF FORMING LAMINATED PRODUCTS Oswald C. H. Sturken, Closter, N. J., assignor to Corn Products Refining Company, New York, N. Y., a corporation of New Jersey No Drawing. Original application June 23, 1938,
Divided and this application May 22, 1939, Serial No. 275,057
Serial N 0. 215,407.
4 Claims.
This invention relates to the production of laminated articles, bodies or structures composed of sheets of paper or other fibrous material united, usually by pressure, through the agency of a suitable adhesive binder forming unitary structures in which the identity of the individual sheets may or may not be completely obliterated; and the primary object of the invention is to provide articles of this character, the adhesive binder of which consists essentially of zein, the alcohol soluble portion of corn (maize) protein, and which articles shall contain a substance or substances of the bitumen-wax type; the paper sheets of which articles may, for example, be
coated or impregnated with such substance, whereby the articles will be tough, strong and highly water resistant.
A further object of the invention is to provide certain novel processes for the production of laminated structures'or articlesoi the character indicated. These processes involve certain procedures whereby the zein is put into colloidal solvents appropriate to each and their solutions mixed together. These substances also reduce brittleness and with such function in view may be regarded as plasticizers.
In the hot process the plastifying or plasticizing agent consists of one or more of a group of substances capable of converting the zein into a state in which it will flow and mix with the dispersion in the bitumen-wax substancei gr.
substances.
The term substances of the bitumen-wax type, or substances of the group consisting of the bituminous and waxes," or equivalent terms, as used herein, are intended to include the bitumens consisting chiefly of saturated hydrocarbons such as the asphalts, either'native or the residues, of petroleum and coal tar distillations;
the mineral waxes, consisting mainly of satu-.
- rated hydrocarbons and free oxygen bodies such as ozokerite, ceresin, montan wax and parafiin; the unsaturated hydrocarbon 'bitumens such as the tars derived from the destructive distillation of wood, coal and other organic material; the pitches derived from the destructive distillation of wood, coal, or animal or vegetable oils (see Standards of 1936 published bythe American Society for Testing Materials, page 1116); the animal waxes, such as beeswax and spermaceti; and the vegetable waxes, such as carnauba, candellila and pisang waxes.
The invention contemplates two different processes, giving in the end substantially simil: articles, both characterized by the colloidal dispersion of the zein in the bitumen-wax substance: one a hot process, in which a plastifying agent is used to put the zein in a flowing state so that, under the influence of heat and pressure, the desired homogeneous mixture or blending of the zein and bitumen-wax substance will take place; and the other a cold process, in whlch the zein and bitumen-wax substance are dissolved by molten bitumen-wax substance. The plasticizing substances which have given the best results are di-butyl tartrate, glycol phthalate, di-ethylene glycol and tri-ethylene glycol. Preferably a volatile solvent for the zein, such as ethyl alcohol of (volume) concentration is used in addition to the plastifying substance.
In the cold process each substance, that is, the
zein and the bitumen-wax substance, is dissolved in a solvent appropriate for such substance and the solutions are mixed together. The usual and preferred solvents for the zein are the alcohols, particularly aqueous, ethyl alcohol, although aqueous methyl or propyl alcohol might be used, The solvent for the bitumen-wax substance will depend upon the particular bitumen-wax substance dealt with. In any case, the solvent must be compatible with the zein and be one that will .not cause the zein to precipitate or the mixture of zein and bitumen-wax substance to stratify. Suitable solvents for asphalts or other bitumens are toluol and carbon tetrachloride; ior carnauba wax", ethyl alcohol; forcandellila wax, carbon tetrachloride; for pisang wax, anrvl alcohol or turpentine.
To enhance toughness and strength a curing agent, such as formaldehyde, may be utilized, either as an ingredient of the mixture or for the subsequent treatment of the articles after the blending of the zein with the bitumen-wax substance has been effected.
. Ordinarily the methods of procedure above referred to and more particularly described in the examples to be given below involve dipping the paper or other sheets, which have been previously impregnated with the bitumen-wax substance, into the fluent zein compound, made fluzein dispersed therein may be effected in one operation instead of two.
I in a stack, are placed in a press, and while being heated to a temperature between 200 F. (93 C.) and 275 F. (135 C.) are subjected to a pressure of 1500 pounds per square inch for, from one to ten minutes. By. this method the previously melted zein blends with the bitumen wax substance, which is melted by the heat of the press, and the sheets are made to adhere together very firmly to form a unifid body which is tough and water resistant.
EXAMPLE 2.--Hot process.In this process a zein solvent is used with the plasticizer to'bring about better dispersion of the zein in the bitumenwax substance. The formula for the zein solution is, in parts by weight, as follows:
Parts Zein 100 Di-butyl tartrate -i 22 Ethyl alcohol of 92% (volume) concentration 240 Water 30 The paper sheets, impregnated with the bitumen-wax substance, are dipped into the zein solution, taken out and dried at a temperature of about 175 F. (80 C.) until all of the alcohol is removed, and are then treated as described in Example 1 to melt the zein and blend it with the bitumen-wax substance. The ethyl alcohol concentration may vary from 70% to 95%.
EXAMPLE 3.Hot process.-The formula is the same as in Example 2 except that to give added strength and toughness to the article formaldehyde, preferably in the form of formalin, a 40% water solution of formaldehyde, is added to the zein solution in quantity to give 3%-10% of free formaldehyde based upon the weight of the zein. The process of forming the laminated articles may be the same as in the previous example.
EXAMPLE 4.Clcl process.-The zein solution is composed of the following substances in proportions by weight as follows:
Parts Zein 100 Ethyl alcohol 95% concentration. 160 Water 20 Toluol 87 the wax solvent used is carbon tetrachloride.
The mixture is heated until the materials Exmts 6.-C0lcl procesa-The bitumen-wax substance here is Pisang wax and the preferred solvent is amyl alcohol.
EXAMPLE 7.--Cold process.-Here the bitumenwax substance is carnauba wax, and the preferred, solvent is ethyl alcohol, the same solvent ,used for dissolving the zein.
By referring to the laminated articles of this invention as composed of sheets of material impregnated with a composition consisting essentially of zein and a substance of the bitumenwax type, it is not intended to exclude plasticizers other than those named, fillers, or other materias which for special purposes may be incorporated into the article.
This is a division of pending application Serial No. 215,407,flled June 23, 1938.
I claim:
1. Process of making a water resistant laminated article which comprises: dipping sheets of fibrous material impregnated with a substance selected from the group of substances consisting of the bitumens and waxes into a cold solution of zein, a zein solvent and a solvent of the bitu men-wax substance which is compatible with zein; and uniting the impregnated sheets by presmixture containing zein, a zein solvent and a 501- 1 vent of the asphalt which is compatible with the zein to form an adhesive and water resistant bonding medium; and uniting the sheets, in superposition, by pressure.
4. Process of forming a laminated article from :asphalt impregnated sheets which comprises:
bringing into con-tact with the asphalt a solution .mixture containing zein, an alcoholic solvent of zein, and toluol to form a water resistant adhesive bonding medium; and uniting the sheets, in
super-position, by pressure.
OSWALD C. H. STURKEN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US275057A US2316467A (en) | 1938-06-23 | 1939-05-22 | Process of forming laminated products |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21540738A | 1938-06-23 | 1938-06-23 | |
| US275057A US2316467A (en) | 1938-06-23 | 1939-05-22 | Process of forming laminated products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2316467A true US2316467A (en) | 1943-04-13 |
Family
ID=26909997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US275057A Expired - Lifetime US2316467A (en) | 1938-06-23 | 1939-05-22 | Process of forming laminated products |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2316467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3236232A (en) * | 1962-11-20 | 1966-02-22 | David F Smith | Adhesive for bonded plaster of paris products |
-
1939
- 1939-05-22 US US275057A patent/US2316467A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3236232A (en) * | 1962-11-20 | 1966-02-22 | David F Smith | Adhesive for bonded plaster of paris products |
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