GB755931A - Improvements in or relating to parting agent solutions for use in the moulding of polyester resins - Google Patents
Improvements in or relating to parting agent solutions for use in the moulding of polyester resinsInfo
- Publication number
- GB755931A GB755931A GB2887752A GB2887752A GB755931A GB 755931 A GB755931 A GB 755931A GB 2887752 A GB2887752 A GB 2887752A GB 2887752 A GB2887752 A GB 2887752A GB 755931 A GB755931 A GB 755931A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose acetate
- solution
- moulding
- polyester resins
- parting agent
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating agents
- B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
- B29C33/66—Cellulose; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
- C09D101/08—Cellulose derivatives
- C09D101/10—Esters of organic acids
- C09D101/12—Cellulose acetate
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
A solution of cellulose acetate for application to the operative surface of a mould employed in the moulding of polyester resins thereby depositing a layer of cellulose acetate which functions as an effective parting agent comprises 1-10 per cent by weight of cellulose acetate and the balance of a solvent mixture consisting of a major proportion by volume of acetone, the remainder consisting of methyl ethyl ketone and any one or more of the following: ethyl acetate, diacetone alcohol, nitromethane, butanol and ethyl lactate.ALSO:In the moulding of polyester resins the operative surface of the mould is coated with cellulose acetate which functions as an effective parting agent. The cellulose acetate is applied, e.g. by brushing or spraying, to the mould in solution in a solvent mixture comprising acetone, methyl ethyl ketone and one or more of the following:-ethyl acetate, diacetone alcohol, nitromethane, butanol and ethyl lactate, the solvent then being removed by drying. The solution may be applied to moulds made of wood, metal, asbestos, reinforced resins, sand impregnated with furane resin, plaster of Paris, artificial stone such as magnesium oxychloride cement or glass. The solution may also be applied to enamelled surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2887752A GB755931A (en) | 1952-11-15 | 1952-11-15 | Improvements in or relating to parting agent solutions for use in the moulding of polyester resins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2887752A GB755931A (en) | 1952-11-15 | 1952-11-15 | Improvements in or relating to parting agent solutions for use in the moulding of polyester resins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB755931A true GB755931A (en) | 1956-08-29 |
Family
ID=10282604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2887752A Expired GB755931A (en) | 1952-11-15 | 1952-11-15 | Improvements in or relating to parting agent solutions for use in the moulding of polyester resins |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB755931A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425455C (en) * | 2006-09-29 | 2008-10-15 | 上海凯兰达实业有限公司 | Mold release for galvanic aluminum coating and preparing process thereof |
-
1952
- 1952-11-15 GB GB2887752A patent/GB755931A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425455C (en) * | 2006-09-29 | 2008-10-15 | 上海凯兰达实业有限公司 | Mold release for galvanic aluminum coating and preparing process thereof |
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