FR2208778A1 - Polyamide and polyolefin composite article prodn. - by successive injection into mould, using grafted polypropylene as adhesion aid - Google Patents
Polyamide and polyolefin composite article prodn. - by successive injection into mould, using grafted polypropylene as adhesion aidInfo
- Publication number
- FR2208778A1 FR2208778A1 FR7341968A FR7341968A FR2208778A1 FR 2208778 A1 FR2208778 A1 FR 2208778A1 FR 7341968 A FR7341968 A FR 7341968A FR 7341968 A FR7341968 A FR 7341968A FR 2208778 A1 FR2208778 A1 FR 2208778A1
- Authority
- FR
- France
- Prior art keywords
- polyamide
- anhydride
- mould
- compn
- acid
- 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.)
- Withdrawn
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
Abstract
A laminated structure comprising a polyolefin core sheathed in a polyamide skin is produced by first injecting the polyamide compn. into a mould and, prior to solidification of the central zone of the compn., injecting the polyolefin into the mould to cause expansion or spreading of the polyamide towards the mould cavity periphery. Into either of the two polymers is incorporated (1) a (co)polypropylene grafted with an unsatd. dicarboxylic acid or anhydride and opt. (2) >=1 cpd(s) chosen from aromatic monocarboxylic acids, OH-contg. monocarboxylic acids which can form a cyclic anhydride, polycarboxylic acids with is not >4 COOH gps. and is not >1 atom of an element other than C, H and O, and their anhydrides. The grafted copolymer (I) contains >=1 wt.% of C=O in the acid or anhydride gps. of (I) and in the free acid or anhydride, the amt. of (I) is 20 wt.%, based on the polymers of the compn., and is such that, together with the free acid or anhydride, the compn. contains 0.02-1% wt., based on the polymers, of acid and/or anhydride gps. (expressed as C=O). (I) together with the free acid ensures good adhesion between the polyolefin and the polyamide and does not have to be separately injected.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5605972 | 1972-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2208778A1 true FR2208778A1 (en) | 1974-06-28 |
Family
ID=10475619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7341968A Withdrawn FR2208778A1 (en) | 1972-12-05 | 1973-11-26 | Polyamide and polyolefin composite article prodn. - by successive injection into mould, using grafted polypropylene as adhesion aid |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2208778A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USH469H (en) | 1986-11-04 | 1988-05-03 | E. I. Du Pont De Nemours And Company | Clear plastic container with good gas and water vapor barrier properties |
| EP0658422A1 (en) * | 1993-12-14 | 1995-06-21 | Ems-Inventa Ag | Moulded article with a resistant surface |
| WO1997022471A1 (en) * | 1995-12-21 | 1997-06-26 | The Dow Chemical Company | Process for preparing a laminate |
| EP0816066A2 (en) * | 1996-07-05 | 1998-01-07 | Rover Group Limited | Painted plastics articles |
-
1973
- 1973-11-26 FR FR7341968A patent/FR2208778A1/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USH469H (en) | 1986-11-04 | 1988-05-03 | E. I. Du Pont De Nemours And Company | Clear plastic container with good gas and water vapor barrier properties |
| EP0658422A1 (en) * | 1993-12-14 | 1995-06-21 | Ems-Inventa Ag | Moulded article with a resistant surface |
| WO1997022471A1 (en) * | 1995-12-21 | 1997-06-26 | The Dow Chemical Company | Process for preparing a laminate |
| CN1098154C (en) * | 1995-12-21 | 2003-01-08 | 陶氏化学公司 | Process for preparing laminate |
| EP0816066A2 (en) * | 1996-07-05 | 1998-01-07 | Rover Group Limited | Painted plastics articles |
| EP0816066A3 (en) * | 1996-07-05 | 1999-12-29 | Rover Group Limited | Painted plastics articles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |