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Q: polypropylene blowing agent ( Answered,   0 Comments )
Subject: polypropylene blowing agent
Category: Business and Money
Asked by: where4-ga
List Price: $50.00
Posted: 11 Feb 2006 17:04 PST
Expires: 13 Mar 2006 17:04 PST
Question ID: 444657
blowing agent butane is used for polypropylene. whether LPG can also
be used as blowing agent and what is the diffrence between these two
blowing agent.
Subject: Re: polypropylene blowing agent
Answered By: jbf777-ga on 18 Feb 2006 11:24 PST
Hello -

The following information was received from a company named "FoamTek",
 specialists in consultating for the foam industry:

"LPG is a mixture of propane, butane and a percentage of other
volatiles.  The percentage changes from batch to batch, which causes
process problems (as with any mixed gas).  LPG is UNscrubbed, which
means that, in its raw state, there are a lot of volatiles that give
off odors when processed, leaving an odor in the sheet. Vapour
pressure of propane is different to that of Butane, and the propane
will tend to escape at die, leaving open cells, inferior surface
finish, and higher density than butane alone."

Foamtek LLC is available at

If this doesn't answer your question, please let me know.



Select search strategy:
foam consultatants

Clarification of Answer by jbf777-ga on 18 Feb 2006 11:24 PST
typo: that should be "consulting", not "consultating"

Request for Answer Clarification by where4-ga on 22 Mar 2006 05:26 PST
in my question i have asked for the difference between these two
blowing agent which is not there answer. please do the needful. thanks

Clarification of Answer by jbf777-ga on 22 Mar 2006 10:20 PST
Hello -

I have placed another request with the company for information, and
will post a response here as soon as I hear from them (or 48 hours,
which ever comes first).



Clarification of Answer by jbf777-ga on 23 Mar 2006 21:49 PST
where4 -

I'm still attempting to get in contact with the representative that
provided the original data.  In the meantime, can you clarify exactly
what details you're looking for in terms of the differences between
LPG and butane?

Thank you for your patience.


Request for Answer Clarification by where4-ga on 24 Mar 2006 12:47 PST
i want to know chemical properties difference between two.and i expect
detailed information all the way. thanks

Clarification of Answer by jbf777-ga on 26 Mar 2006 08:51 PST
The original answer supplied had discussed the differences between
these two chemicals as *blowing agents*, which was my interpretation
of your original question.   I'll need a few days to continue research
on this question to see if I can locate chemical property information
on these blowing agents.  Thanks for your patience.


Request for Answer Clarification by where4-ga on 26 Mar 2006 22:34 PST
you have answerd application of lpg and its behavior as a blowing
agent which is answer to first part of my question. but answer to
second part still remains as a whole. please answer the remaing part
as early as possible because i have to start working on my plant which
is to be installed in first week of april. thanks

Clarification of Answer by jbf777-ga on 27 Mar 2006 09:49 PST
Since you're in a rush, I wanted to see if maybe this link would cut it for you:

The typical chemical properties of LPG:

This is from the LPG Association of the UK.  As stated earlier, LPG is
chiefly a combination of butane and propane.  You can compare this
data to the butane column alone and see the differences between the
two chemicals.

Will this work?


Clarification of Answer by jbf777-ga on 27 Mar 2006 09:50 PST
Some additional molecular information:

Request for Answer Clarification by where4-ga on 01 Apr 2006 09:10 PST
i do not gather any thing from your links. they do not serve my
perpose at i leave up to you how to give proper details and
information.if you think so!thanks.

Clarification of Answer by jbf777-ga on 01 Apr 2006 13:46 PST
I'd like to be able to help you further, but I'm not able to find the
exact details you require, and I do not think I will be able to do so
in the time frame you require.  If you'd like, email for a refund for this question (ID #444657

Sorry again,


Request for Answer Clarification by where4-ga on 02 Apr 2006 04:55 PDT
asking for refund is out of question. if you can give me please just
give me some information about the difference in application behavior
when both are used as blowing agent for polystrene sheet. even this is
not possible i close the link here only.thanks

Clarification of Answer by jbf777-ga on 03 Apr 2006 09:30 PDT
I spoke with a consultant in the industry named Ed Leduc. He might
have supplied information through Davis Standard to you, as he says
the request sounds familiar.  However, you didn't speak to him
directly.  He said he has experience blowing foam with every
conceivable product, and he has worked for two of the biggest foam
manufacturers in the country (or world).  He would be wiling to speak
with you directly, and provide the information you're seeking at no
cost.  He can also supply you with the name of another consultant who
could verify the information.

Ed Leduc
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