GB1195732A - Laminating Process and Products Produced Thereby - Google Patents
Laminating Process and Products Produced TherebyInfo
- Publication number
- GB1195732A GB1195732A GB2917167A GB2917167A GB1195732A GB 1195732 A GB1195732 A GB 1195732A GB 2917167 A GB2917167 A GB 2917167A GB 2917167 A GB2917167 A GB 2917167A GB 1195732 A GB1195732 A GB 1195732A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenol
- formaldehyde
- heating
- polyhydric
- centistokes
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C09J161/12—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols with polyhydric phenols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
1,195,732. Plywood. WEYERHAEUSER CO. 23 June, 1967 [15 Aug., 1966], No. 29171/67. Heading B5L. [Also in Division C3] Wood veneers are laminated by (a) heating a surface thereof to a temp. not exceeding 400‹ F. (205‹ C.), (b) applying an adhesive to the surface and (c) pressing the veneers together until the adhesive is cured, the adhesive comprising 3 components: (i) over 50% of a phenol-formaldehyde resin having a molar ratio of formaldehyde to phenol between 1À5 to 1 and 2À8 to 1 and containing no free aldehyde, (ii) a condensate of phenol, formaldehyde and a polyhydric phenol having a molar ratio of formaldehyde to total phenol between 0À4 to 1 and 0À8 to 1 and a molar ratio of phenol to polyhydric phenol not exceeding 2 to 1 and containing no free aldehyde and (iii) a source of aldehyde. Component (i) may be prepared by heating the reactants in an aqueous medium, under reflux and in the presence of NaOH as catalyst until a viscosity between 400 and 15,000 centistokes is reached. In component (ii) the polyhydric phenol may be resorcinol or a mixture of polynuclear polyhydric phenols which may also contain some dihydroxy benzenes. Component (ii) may be prepared by heating phenol, and flaked paraformaldehyde in an aqueous medium, and in the presence of NaOH or Cu acetate as catalyst until a viscosity between 75 and 15,000 centistokes is reached and then adding the polyhydric phenol and further heating to a viscosity between 100 and 2000 centistokes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57220866A | 1966-08-15 | 1966-08-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1195732A true GB1195732A (en) | 1970-06-24 |
Family
ID=24286828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2917167A Expired GB1195732A (en) | 1966-08-15 | 1967-06-23 | Laminating Process and Products Produced Thereby |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE702650A (en) |
DE (1) | DE1719207A1 (en) |
GB (1) | GB1195732A (en) |
SE (1) | SE332074B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0332162A2 (en) * | 1988-03-09 | 1989-09-13 | Forintek Canada Corp. | Phenol formaldehyde adhesive for bonding wood pieces of high moisture content and composite board and veneers bonded with such adhesive |
-
1967
- 1967-06-19 SE SE867267A patent/SE332074B/xx unknown
- 1967-06-23 GB GB2917167A patent/GB1195732A/en not_active Expired
- 1967-07-05 DE DE19671719207 patent/DE1719207A1/en active Pending
- 1967-08-14 BE BE702650D patent/BE702650A/xx unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0332162A2 (en) * | 1988-03-09 | 1989-09-13 | Forintek Canada Corp. | Phenol formaldehyde adhesive for bonding wood pieces of high moisture content and composite board and veneers bonded with such adhesive |
EP0332162A3 (en) * | 1988-03-09 | 1990-03-14 | Forintek Canada Corp. | Phenol formaldehyde adhesive for bonding wood pieces of high moisture content and composite board and veneers bonded with such adhesive |
Also Published As
Publication number | Publication date |
---|---|
DE1719207A1 (en) | 1971-12-30 |
SE332074B (en) | 1971-01-25 |
BE702650A (en) | 1968-01-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |